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PGPfone

Encrypted telephony and VoIP

PGPfone Description
PGPfone was a secure voice telephony system developed by Philip Zimmermann in 1995. The PGPfone protocol had little in common with Zimmermann's popular PGP email encryption package, except for the use of the name. It used ephemeral Diffie-Hellman protocol to establish a session key, which was then used to encrypt the stream of voice packets. The two parties compared a short authentication string to detect a Man-in-the-middle attack, which is the most common method of wiretapping secure phones of this type. PGPfone could be used point-to-point (with two modems) over the public switched telephone network, or over the Internet as an early Voice over IP system.
In 1996, there were no protocol standards for Voice over IP. Ten years later, Zimmermann released the successor to PGPfone, Zfone and ZRTP, a newer and secure VoIP protocol based on modern VoIP standards. Zfone builds on the ideas of PGPfone.
According to the MIT PGPfone web page, "MIT is no longer distributing PGPfone. Given that the software has not been maintained since 1997, we doubt it would run on most modern systems."
A list below shows PGPfone alternatives which were either selected by us or voted for by users. You can filter this list by tags and platforms

PGPfone Alternatives

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  • IAIKJCE

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    Latest version of IAIK-JCE is 5.3 and it was released on 2015-12-23.

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  • Gpg4win by The Gpg4win Initiative

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  • eCryptfs

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  • E4M

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  • cryptmount

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    Latest version of cryptmount is 5.0 and it was released on 2014-05-02.

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  • Confide by Confide, Inc.

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  • Botan

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    Tags: C Libraries, Cryptographic Software, Software Using The Bsd License, Transport Layer Security Implementation
  • Android Privacy Guard

    Android Privacy Guard (APG) is a free and open source software application that runs on the Android operating system. The application provides strong, user-based encryption which is compatible with...

    Tags: Free And Opensource Android Software, Openpgp, Cryptographic Software
  • BestCrypt by Jetico Inc, Oy

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  • AxCrypt by Svante Seleborg

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    Latest version of AbsoluteTelnet is 10.12 and it was released on 2015-06-16.

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  • Sentry 2020 by Softwinter

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  • ICX by Matt Asher, DannToliver

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    Tags: Cryptographic Software, Free Software, Internet Privacy Software
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    Tags: Cryptographic Software, Openpgp, Free Email Software, Macos Security Software
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    Tags: Disk Encryption, Cryptographic Software
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    Tags: Cryptographic Software, Java Libraries, Software Using The Mit License, Transport Layer Security Implementation
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    Latest version of CryptoGraf is 2.0 and it was released on July 9, 2007.

    Tags: Cryptographic Software, Pocket Pc Software, Symbian Instant Messaging Clients
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    Latest version of CSipSimple is {{#property:P348}} and it was released on 2014-11-30.

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    Tags: Password Managers, Cryptographic Software, Mozilla Addons, Internet Explorer Addons, Google Chrome Extensions
  • DiskCryptor by Anonymous ntldr <ntldr(at)diskcryptor.net>

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    Latest version of DiskCryptor is 1.1.846.118 and it was released on 2014-07-09.

    Tags: Cryptographic Software, Disk Encryption, Windows Security Software, Free Security Software
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    Tags: Cryptographic Software, Mozilla Addons, Openpgp, Free Email Software, Macos Security Software, Windows Security Software, Unix Security Software, Macos Internet Software, Windows Internet Software, Unix Internet Software, Crossplatform Free Software
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    Tags: Cryptographic Software, Data Security
  • FreeOTFE by Sarah Dean

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    Latest version of FreeOTFE is 5.21 and it was released on 2010-02-07.

    Tags: Cryptographic Software, Disk Encryption, Free Security Software, Windows Security Software, Windows Mobile Software, Portable Software, Free Software
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    Tags: Cryptographic Software, Key Management
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    Tags: 1999 Software, Crossplatform Software, Cryptographic Software, Free Security Software, Gnu Project Software, Linux Security Software, Openpgp, Privacy Software
  • I2P The Anonymous Network

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    Latest version of I2P - The Anonymous Network is 0.9.31 and it was released on 2017-08-07.

    Tags: I2p, Anonymity Networks, Anonymous File Sharing Networks, Crossplatform Free Software, Crossplatform Software, Cryptographic Software, Cryptographic Protocols, Dark Web, Free Communication Software, Free Multilingual Software, Free Networkrelated Software, Free Routing Software, Free Software Programmed In Java, Free And Opensource Android Software, Internet Privacy Software, Peertopeer Computing, Privacy Software, 2003 Software, Software Using The Mit License
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    Latest version of Java Anon Proxy is 0.20.001 and it was released on 2016-12-15.

    Tags: Anonymity Networks, Cryptographic Software, Free Security Software, Proxy Servers, Software Programmed In Java
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    Tags: 2014 Software, C Libraries, Cryptographic Software, Free Security Software, Free Software Programmed In C, Openbsd, Software Forks, Transport Layer Security Implementation
  • MatrixSSL by PeerSec Networks, acquired by INSIDE Secure Corp.

    MatrixSSL is an Open-Source TLS/SSL implementation designed for custom applications in embedded hardware environments. The MatrixSSL library contains a full cryptographic software module that...

    Tags: Cryptographic Software, C Libraries, Free Security Software, Transport Layer Security Implementation
  • Mitro

    Mitro was a password manager for individuals and teams that securely saved users' logins, and allowed users to log in and share access. On October 6, 2015, the Mitro service shut down. The...

    Tags: Companies Established In 2012, Computer Security Software Companies, Cryptographic Software, Free Password Managers, Free Software Programmed In C, Software Companies Based In New York, Twitter Acquisitions
  • Nettle by Niels Möller

    Nettle is a cryptographic library designed to fit easily in a wide range of toolkits and applications. It began as a collection of low-level cryptography functions from lsh in 2001. Since June 2009...

    Tags: Cryptographic Software, Gnu Project Software, Free Security Software, Free Computer Libraries, Software Written Primarily In Assembly Language, Software Using The Lgpl License, Software Using The Gpl License
  • OpenCA by OpenCA Labs

    OpenCA, officially the OpenCA PKI Research Labs and formerly the OpenCA Project, is a PKI collaborative effort to develop a robust, full-featured and open-source out-of-the-box certification...

    Latest version of OpenCA is v1.5.2 and it was released on 2014-05-10.

    Tags: Cryptographic Software, Public Key Infrastructure
  • OpenPuff by Eng. Cosimo Oliboni

    OpenPuff Steganography and Watermarking, sometimes abbreviated OpenPuff or Puff, is a freeware steganography tool for Microsoft Windows created by Cosimo Oliboni and still maintained as independent...

    Latest version of OpenPuff is 4.00 and it was released on 2012-07-07.

    Tags: Steganography, Cryptographic Software, Espionage Techniques, Applications Of Cryptography, Portable Software, Free Security Software, Computer Security Software, 2004 Software
  • OpenSSH by The OpenBSD Project

    OpenSSH (also known as OpenBSD Secure Shell) is a suite of security-related network-level utilities based on the Secure Shell (SSH) protocol, which help to secure network communications via the...

    Latest version of OpenSSH is 7.5 and it was released on 2017-03-20.

    Tags: Crossplatform Free Software, Cryptographic Software, Free Networkrelated Software, Free Security Software, Openbsd, Secure Shell
  • OpenSSL by The OpenSSL Project

    OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end. It is widely used in internet...

    Tags: 1998 Software, C Libraries, Cryptographic Software, Free Security Software, Transport Layer Security Implementation
  • Pleasant Password Server by Pleasant Solutions Inc.

    Pleasant Password Server is a proprietary, multi-user enterprise password server that is fully compatible with KeePass Password Safe. Designed for business users, the password server provides access...

    Latest version of Pleasant Password Server is 7.7.3 and it was released on 2017-08-02.

    Tags: Password Managers, Cryptographic Software
  • pretty Easy privacy pp by p≡p Foundation (Switzerland), p≡p Security AG (Switzerland), p≡p Security SA (Luxembourg)

    pretty Easy privacy (p≡p) is a pluggable data encryption and verification system, which provides automatic cryptographic key management through a set of libraries (providing p≡p adapters for...

    Tags: Cryptographic Software, Security
  • Private Disk by Dekart

    Private Disk is a disk encryption application for the Microsoft Windows operating system, developed by Dekart SRL. It works by creating a virtual drive, the contents of which is encrypted...

    Latest version of Private Disk is 2.14 and it was released on 2014-06-20.

    Tags: Cryptographic Software, Windows Security Software, Disk Encryption
  • ProVerif

    ProVerif is a software tool for automated reasoning about the security properties found in cryptographic protocols. The tool has been developed by Bruno Blanchet. Support is provided for...

    Latest version of ProVerif is 1.90 and it was released on 2015-05-07.

    Tags: Cryptographic Software, Free Software
  • PuTTY by Simon Tatham

    PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket...

    Latest version of PuTTY is 0.70 and it was released on 2017-07-08.

    Tags: 1998 Software, Crossplatform Free Software, Cryptographic Software, Free Communication Software, Free Software Programmed In C, Free Terminal Emulators, Secure Shell, Sftp Clients, Software Using The Mit License, Symbian Software
  • RetroShare by RetroShare Team

    RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network built on GNU Privacy Guard (GPG). It is...

    Tags: 2006 Software, Anonymous File Sharing Networks, Crossplatform Free Software, Cryptographic Software, Free File Sharing Software, Free File Transfer Software, Free Instant Messaging Clients, Free Internet Forum Software, Free Software Programmed In C, Instant Messaging Clients That Use Qt, Internet Privacy Software, Macos Instant Messaging Clients, Peertopeer File Sharing, Secure Communication, Unix Instant Messaging Clients, Windows Instant Messaging Clients, Peertopeer Software
  • stunnel by Michał Trojnara

    stunnel is an open-source multi-platform application used to provide universal TLS/SSL tunneling service. stunnel can be used to provide secure encrypted connections for clients or servers that do...

    Tags: Cryptographic Software, Free Security Software, Unix Networkrelated Software, Transport Layer Security Implementation
  • Synccom

    Sync.com, Inc. based in Toronto Ontario, Canada, is a privacy-oriented file hosting service that offers cloud storage, file synchronization, file sharing, document collaboration and remote backup...

    Tags: File Hosting, File Sharing Services, Data Synchronization, Crossplatform Software, Cloud Storage, Cloud Applications, File Hosting For Linux, File Hosting For Macos, File Hosting For Windows, Online Backup Services, Email Attachment Replacements, Linux Software, Macos Software, Cryptographic Software, Office Software, Companies Terms Of Service
  • Tera Term by Tera Term Project

    Tera Term (rarely TeraTerm) is an open-source, free, software implemented, terminal emulator (communications) program. It emulates different types of computer terminals, from DEC VT100 to DEC VT382....

    Latest version of Tera Term is 4.94 and it was released on 2017-02-28.

    Tags: Cryptographic Software, Terminal Emulators, Free Terminal Emulators, Windowsonly Free Software
  • Threema by Threema GmbH

    Threema is a proprietary encrypted instant messaging application for iOS, Android and Windows Phone. In addition to text messaging, users can send multimedia, locations, voice messages and...

    Tags: Instant Messaging Clients, 2012 Software, Cryptographic Software, Internet Privacy Software, Ios Software, Windows Phone Software, Swiss Brands
  • Tresorit

    Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses. The service starts at 12.50 EUR/Month/User/1000GB...

    Tags: File Sharing Services, Cloud Storage, Cloud Applications, Online Backup Services, Datasynchronization, Email Attachment Replacements, File Hosting, File Hosting For Macos, File Hosting For Windows, File Hosting For Linux, Macos Software, Linux Software, Cryptographic Software, Office Software, Companies Terms Of Service
  • Wire by Wire Swiss GmbH

    Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser clients. It uses the Internet to make...

    Tags: Crossplatform Software, Ios Software, Free And Opensource Android Software, Free Instant Messaging Clients, Instant Messaging Clients, Formerly Proprietary Software, Free Security Software, Free Voip Software, Cryptographic Software, Secure Communication, Internet Privacy Software, Swiss Brands
  • Zfone

    Zfone is software for secure voice communication over the Internet (VoIP), using the ZRTP protocol. It is created by Phil Zimmermann, the creator of the PGP encryption software. Zfone works on top...

    Tags: Voip Software, Cryptographic Software, Internet Privacy Software, Software Using The Gnu Agpl License
  • cryptlib by Peter Gutmann

    cryptlib is an open source cross-platform software security toolkit library. It is distributed under the Sleepycat License, a free software license compatible with the GNU General Public License....

    Tags: Cryptographic Software, C Libraries, Free Security Software, Crossplatform Software, Openpgp, Transport Layer Security Implementation
  • CrypTool by Bernhard Esslinger,,,,,

    CrypTool is an open source project. The main result is the free e-learning software CrypTool illustrating cryptographic and cryptanalytic concepts. According to "Hakin9" CrypTool is worldwide the...

    Tags: 1998 Software, Free Educational Software, Cryptographic Software, Free Software Programmed In C, Free Software Programmed In Java, Free Software Programmed In C Sharp, Windowsonly Free Software, Cryptography, Cryptography Contests
  • libotr

    Off-the-Record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations. OTR uses a combination of AES symmetric-key algorithm with 128 bits key...

    Latest version of libotr is 4.1.1 and it was released on 2016-03-09.

    Tags: Free Security Software, Cryptographic Protocols, Cryptographic Software, Internet Privacy Software, Crossplatform Free Software, Instant Messaging
  • Firefox Petname Tool by Tyler Close

    Petname systems are naming systems that claim to possess all three naming properties of Zooko's triangle - global, secure, and memorable. Software that uses such a system can satisfy all three...

    Latest version of Firefox Petname Tool is 1.7 and it was released on July 14, 2009.

    Tags: Computer Security Software, Secure Communication, Mozilla Addons, Firefox Addons
  • Tox

    Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption. The stated goal of the project is to provide secure yet easily accessible communication for...

    Tags: 2013 Software, Android Software, Crossplatform Software, Distributed Computing, Free Software Programmed In C, Instant Messaging Clients, Instant Messaging Clients For Linux, Instant Messaging Clients That Use Gtk, Ios Software, Macos Instant Messaging Clients, Secure Communication, Videotelephony, Voip Services, Voip Software, Windows Instant Messaging Clients
  • Infinit by Infinit International Inc.

    Infinit is a discontinued file transfer service operated by Infinit International Inc. Infinit has released five products, three for desktop and two for mobile. The desktop products are natives...

    Tags: Anonymous File Sharing Networks, Android Software, Companies Based In Paris, Crossplatform Software, File Transfer Protocols, File Sharing Networks, File Sharing Software, File Sharing Services, File Sharing Software For Linux, Free File Transfer Software, Ios Software, Managed File Transfer, Mobile Software, Multimedia Software, Multinational Companies Headquartered In France, Network File Transfer Protocols, Online Companies, Online Services, Macos File Sharing Software, Peertopeer File Sharing, Photo Sharing, Proprietary Crossplatform Software, Secure Communication, Software Companies Of France, Techstars Alumni, Utilities For Macos, Windows File Sharing Software
  • IGap by Rooyekhat Media co

    iGap ( آی گپ ) is a Free Iranian open-source instant messaging application for smart phones and PCs. iGap provides all users to interact with each other and exchange information through text, image,...

    Tags: 2015 Software, Communication Software, Crossplatform Software, Instant Messaging Clients, Ios Software, Secure Communication, Free Security Software, Free Instant Messaging Clients, Free And Opensource Android Software
  • Skype by Skype Technologies

    Skype is an instant messaging app that provides online text message and video chat services. Users may transmit both text and video messages, and may exchange digital documents such as images, text,...

    Tags: Skype, 2003 Software, 2011 Acquisitions, Android Software, Companies In The Prism Network, Crossplatform Software, Estonian Brands, Estonian Inventions, Freeware, Instant Messaging Clients, Ios Software, Macos Instant Messaging Clients, Microsoft Acquisitions, Microsoft Divisions, Peertopeer Software, Pocket Pc Software, Portable Software, Proprietary Freeware For Linux, Proprietary Software That Uses Qt, Silver Lake Partners Companies, Symbian Software, Universal Windows Platform Apps, Videoconferencing Software For Linux, Videotelephony, Voice Over Ip Clients For Linux, Voip Companies Of The United States, Voip Services, Voip Software, Windows Instant Messaging Clients, Windows Mobile Standard Software, Windows Phone Software, Android Auto Software
  • Google Voice by Google

    Google Voice is a telephony service that provides call forwarding and voicemail services, voice and text messaging, as well as U.S. and international call termination services for Google Account...

    Tags: Computerrelated Introductions In 2005, Google Acquisitions, Telecommunication Services, Telecommunications In The United States, Voip Services, Voip Software
  • Facebook Messenger by Facebook

    Facebook Messenger (sometimes abbreviated as Messenger) is an instant messaging service and software application. Originally developed as Facebook Chat in 2008, the company revamped its messaging...

    Tags: 2011 Software, Freeware, Xmpp Clients, Voip Software, Windows Instant Messaging Clients, Portable Software, Android Software, Ios Software, Blackberry Software, Social Media, Windows Phone Software, Universal Windows Platform Apps, Watchos Software, Facebook Software, Videotelephony
  • Voice Operator Panel by JOHER

    Voice Operator Panel (VOP) is a professional SIP softphone for operators and receptionists with Outlook/LDAP/XMPP/MSN/CRM integration, built-in web browser and e-mailer. VOP provides a software...

    Tags: Voip Software
  • Ventrilo by Flagship Industries, Inc.

    Ventrilo (or Vent for short) is a proprietary VoIP software that includes text chat. The Ventrilo client and server are both available as freeware for use with up to 8 people on the same server....

    Latest version of Ventrilo is 4.0.0.0 and it was released on 2017-08-20.

    Tags: Freeware, Voip Software, Windows Multimedia Software, Macos Multimedia Software, 2002 Software
  • SightSpeed by SightSpeed Inc.

    SightSpeed is a videoconferencing company, supplying VoIP and instant messaging app for Windows and macOS operating systems. The service allows people to make video calls, computer-to-computer voice...

    Latest version of SightSpeed is 6.0 and it was released on 1 March 2007.

    Tags: Voip Software, Windows Instant Messaging Clients, Macos Instant Messaging Clients, Videotelephony
  • SafeSwiss by SafeSwiss Secure Communication AG.

    SafeSwiss is a proprietary freeware VoIP instant messaging application that runs on Windows, Android, and iOS. In addition to one-to-one and group text messaging, users can send multimedia,...

    Tags: Android Software, Freeware, Instant Messaging Clients, Ios Software, Proprietary Crossplatform Software, 2016 Software, Voip Software
  • ooVoo by Krush Technologies, LLC

    ooVoo is a video chat and an messaging app developed by ooVoo LLC and owned by Krush Technologies, LLC. ooVoo has applications for Android, iOS, Mac OS X, Microsoft Windows, Windows Phone, and...

    Latest version of ooVoo is 3.X and it was released on {{Start date and age|2017|02}}.

    Tags: Voip Software, Macos Instant Messaging Clients, Windows Instant Messaging Clients, Software Development Kits, Videotelephony, 2007 Software, Webcams, Universal Windows Platform Apps
  • Mobicents

    Mobicents is an Open Source VoIP Platform written in Java to help create, deploy, manage services and applications integrating voice, video and data across a range of IP and legacy communications...

    Tags: Software Using The Gnu Agpl License, Voip Software
  • Nuvoiz Communicator by Nuvoiz Inc.

    Nuvoiz SoftPhone is a SIP and XMPP based SoftPhone application for Voice over IP and instant messaging. It is developed by Nuvoiz Inc. for enterprises. The first version of the program was released...

    Tags: 2006 Software, Xmpp Clients, Voip Software, Windows Instant Messaging Clients, Pocket Pc Software, Windows Mobile Standard Software
  • Mohawk Voice

    Mohawk Voice is a low resource VoIP program originally released in November 2009 which is free to download and use. The program is supported on Windows XP, Windows Vista, and Windows 7 in 32-bit and...

    Tags: Voip Software
  • iMeet by PGi

    iMeet is a cloud-based video conferencing platform built in HTML 5 and Adobe Flash. iMeet allows up to 125 participants to communicate using traditional landline audio or VoIP audio and to video...

    Tags: Teleconferencing, Videotelephony, Voip Software
  • Fetion by China Mobile

    Fetion (Chinese:飞信, pinyin: fēi xìn, lit. flying letter) is an instant messaging (IM) client developed by China Mobile, a Chinese telecommunications company. It allows users to send and receive SMS...

    Tags: Instant Messaging Clients, China Mobile, Voip Software
  • DialOffice IPPBX by Dialexia

    Dial-Office IP-PBX is a SIP-based IP-PBX business phone system, first released in 2003 by Canadian telecommunications software provider Dialexia. The software allows users to connect multiple phones...

    Tags: Telecommunications Companies Of Canada, Voip Companies, Voip Software
  • DialGate VoIP Softswitch by Dialexia

    Dial-Gate VoIP Softswitch is a SIP-based IP-PBX software for businesses, first released in 2006 by Canadian VoIP PBX solution provider Dialexia. The software serves as a web-based softswitch and...

    Tags: Telecommunications Companies Of Canada, Voip Companies, Voip Software, 2006 Software
  • Creacode SIP Application Server by Creacode Ltd.

    Creacode SIP Application Server is a SIP call controller, SIP IVR, SIP Registrar and SIP NAT traversal software...

    Tags: Voip Software
  • Brekeke SIP Server by Brekeke Software, Inc.

    Brekeke SIP Server is a SIP-based SIP Proxy Server and Registrar. This software was previously known as OnDO SIP Server from 2003 to 2006. Brekeke Software, Inc. released the second version of the...

    Tags: Telecommunications Companies Of The United States, Voip Software
  • Brekeke PBX by Brekeke Software, Inc.

    Brekeke PBX is a SIP-based IP-PBX system. This software was previously known as OnDO PBX from 2004 to 2006. Brekeke Software, Inc. released Version 2 of this software in 2007 and changed its name to...

    Tags: Telecommunications Companies Of The United States, Voip Companies, Voip Software
  • Yahoo Voice by Yahoo

    Yahoo Voice was Voice over IP PC-PC, PC-Phone and Phone-to-PC service, provided by Yahoo via its Yahoo Messenger instant messaging application. Yahoo Voice uses the Session Initiation Protocol...

    Tags: Teleconferencing, Voip Services, Voip Software, Discontinued Yahoo Services
  • Yahoo Messenger by Yahoo!

    Yahoo! Messenger (sometimes abbreviated Y!M) is an advertisement-supported instant messaging client and associated protocol provided by Yahoo!. Yahoo Messenger is provided free of charge and can be...

    Tags: Blackberry Software, Ios Software, Classic Mac Os Instant Messaging Clients, Macos Instant Messaging Clients, Symbian Instant Messaging Clients, Windows Instant Messaging Clients, Freeware, Yahoo, Yahoo Instant Messaging Clients, Voip Software, Videotelephony, 1998 Software, Android Software, Yahoo Community Websites
  • Windows Live Messenger by Microsoft

    Windows Live Messenger (formerly MSN Messenger) is a discontinued instant messaging client developed by Microsoft for Windows, Xbox 360, BlackBerry OS, iOS, Java ME, S60 on Symbian OS 9.x, and Zune...

    Tags: 1999 Software, Adware, Msn, Teleconferencing, Videotelephony, Voip Software, Windows Instant Messaging Clients, Windows Live, Windowsonly Freeware, Symbian Software, Yahoo Instant Messaging Clients, 2013 Disestablishments, Discontinued Microsoft Software
  • Rakuten Viber by Rakuten Inc.

    Viber is a free, cross-platform instant messaging and voice over IP (VoIP) application that was first developed and popularized by the Israeli company Viber Media that was bought by the Japanese...

    Tags: Ios Software, Android Software, Proprietary Crossplatform Software, Instant Messaging Clients, Voip Software, Voip Services, Voip Companies, Blackberry Software, Software Companies Of Israel, Windows Phone Software, Social Media, Symbian Software, Rakuten, 2010 Establishments In Israel, 2010 Software, Universal Windows Platform Apps, Mergers And Acquisitions Of Israeli Companies
  • Upptalk

    Upptalk (formerly known as Yuilop) is a proprietary voice-over-IP service and software application that provides mobile phone numbers in the cloud and allows users to call or text any phone for free...

    Tags: 2011 Software, Android Software, Crossplatform Mobile Software, Crossplatform Software, Freeware, Instant Messaging Clients, Ios Software, Portable Software, Social Networking Services, Voip Services, Voip Companies Of Spain, Voip Software, Windows Phone Software
  • Tango by JP Inc.

    Tango is a third-party, cross platform messaging application software for smartphones developed by TangoME, Inc. in 2009. The app is free and is popular for offering video calls over 3G, 4G and...

    Tags: Android Software, Crossplatform Software, Ios Software, Social Networking Services, Videotelephony, Voip Companies Of The United States, Voip Services, Voip Software, Windows Phone Software, Companies Based In Palo Alto California, 2009 Establishments In California
  • Roger Wilco by GameSpy

    Roger Wilco was one of the first voice-over-IP client programs designed primarily for use with online multiplayer video games. Roger Wilco enables gamers to talk through a headset or other handsfree...

    Latest version of Roger Wilco is 1.4.1.6 and it was released on 2003-07-08.

    Tags: 1999 Software, Voip Software, Windows Internet Software, Gamespy
  • ringID by Ring Inc.

    ringID is a proprietary Social Networking platform which has been designed and developed by Ring Inc. located in Montreal, Canada. ringID allows users to communicate for free using their individual...

    Tags: Android Software, Crossplatform Software, Ios Software, Social Networking Websites, Voip Software
  • Nymgo by Splendor Telecom UK Ltd

    Nymgo (pronounced \ˈnim-ˌgo\) is a software application that makes calls from computers to landlines and mobile phones over the Internet through Voice over Internet Protocol (VoIP). Nymgo charges...

    Tags: Voip Software, Voip Services, Telecommunications Companies
  • HERO Hosted PBX by Dialexia

    HERO Hosted PBX is a SIP-based hosted IP-PBX business phone system, first released in 2008 by Canadian telecommunications software provider Dialexia. The HERO (Hosted Enterprise Remote Office)...

    Tags: Telecommunications Companies Of Canada, Voip Companies, Voip Software
  • Google Talk by Google

    Google Talk (also known as Google Chat) is an instant messaging service that provides both text and voice communication. The instant messaging service is colloquially known as "Gchat", "Gtalk", or...

    Tags: Google Software, 2005 Software, Android Software, Blackberry Software, Freeware, Portable Software, Videotelephony, Voip Software, Windows Instant Messaging Clients, Symbian Instant Messaging Clients, Xmpp Clients, Discontinued Google Software
  • Google Hangouts by Google

    Google Hangouts is a communication platform developed by Google which includes instant messaging, video chat, SMS and VOIP features. It replaces three messaging products that Google had implemented...

    Tags: Instant Messaging Clients, Telecommunication Services, Voip Services, Voip Software, Ios Software, Android Software, Crossplatform Software, 2013 Software, Google Software
  • FriendCaller by C2Call GmbH

    FriendCaller is a Video and Voice over Internet protocol developed by C2Call GmbH based in Werl, Germany. Its proprietary Voice-Over-Internet technology was originally created by Michael Knecht and...

    Tags: Android Software, Crossplatform Software, Java Platform Software, Freeware, Ios Software, Instant Messaging Clients For Linux, Macos Instant Messaging Clients, Portable Software, Social Networking Services, Videotelephony, Voip Services, Voip Companies, Voip Software
  • Gizmo5 by Google

    Gizmo5 (formerly known as Gizmo Project and SIPphone) was a Voice over IP communications network and a proprietary freeware soft phone for that network. On November 12, 2009, Google announced that...

    Tags: Discontinued Google Acquisitions, Freeware, Voip Software, Xmpp Clients, Defunct Voip Companies, Instant Messaging Clients For Linux, Voice Over Ip Clients For Linux, Macos Instant Messaging Clients, Windows Instant Messaging Clients, Google Services
  • Elymentz by Elymentz Sprl

    Elymentz is a cross-platform mobile instant messaging app for Smartphones that provides free chat, chat translation, scheduled calls, voice conferencing to individuals and businesses. The...

    Latest version of Elymentz is Released version: 1.0.0 and it was released on 2015-06-03.

    Tags: Ios Software, Android Software, Instant Messaging Clients, Voip Software, Voip Services, Voip Companies
  • Discord by Discord Inc.

    Discord is a proprietary freeware VoIP application designed for gaming communities. Discord runs on Windows, macOS, Android, iOS, Linux, and in a web browser. As of May 2017, Discord has over 45...

    Latest version of Discord is 5.3.17 and it was released on 2017-05-03.

    Tags: Android Software, Freeware, Instant Messaging Clients, Ios Software, Macos Software, Proprietary Crossplatform Software, 2015 Software, Voice Over Ip Clients For Linux, Voip Software
  • 1legcall by TalkFree, Inc

    1legcall, is a mobile VoIP dialer that works on most Nokia...

    Tags: Nokia Services, Symbian Software, Voip Software
  • Jitsi by [https://jitsi.org/index.php/Development/TeamAndContributors Jitsi Team and Contributors,]

    Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application for Windows, Linux, Mac OS X and Android. It supports...

    Tags: 2003 Software, Aim Clients, Crossplatform Free Software, Free And Opensource Android Software, Free Instant Messaging Clients, Free Software Programmed In Java, Free Voip Software, Free Xmpp Clients, Instant Messaging Clients Programmed In Java, Macos Instant Messaging Clients, Portable Software, Videoconferencing Software Programmed In Java, Videotelephony, Voice Over Ip Clients Programmed In Java, Voip Software, Windows Instant Messaging Clients
  • Yate by NullTeam;

    Yate (Yet Another Telephony Engine) is free and open source communications software with support for video, voice and instant messaging. It is an extensible, GPL licensed PBX. It is written in C++...

    Latest version of Yate is 5.4.0 and it was released on 2014-04-25.

    Tags: Voip Software, Free Voip Software, Software That Was Ported From Gtk To Qt
  • Sippy B2BUA

    Sippy B2BUA is a RFC3261-compliant Session Initiation Protocol (SIP) Back-to-back user agent (B2BUA) software distributed under the terms of GPL Free Software...

    Tags: Voip Software, Free Voip Software
  • CoolTalk

    CoolTalk was an Internet telephony tool included as a plugin in Netscape Navigator 3.0, released in 1996. It included an answering machine and a shared...

    Tags: Voip Software
  • OpenSIPS by OpenSIPS Project

    OpenSIPS is a free software implementation of the session initiation protocol (SIP) for voice over IP (VoIP) that can be used to handle voice, text and video communication. OpenSIPS is intended for...

    Tags: Voip Software, Free Voip Software
  • Cipango by Cipango Team

    Cipango is a VoIP extension to the ]] standard. It also offers support of Diameter...

    Tags: Voip Software, Free Voip Software
  • Unison by Unison Technologies, Inc.

    Unison was a collaboration software service that provided private group spaces, "rooms", to teams. It was developed by Unison Technologies, Inc., of New York City, which promoted the software as a...

    Latest version of Unison is N/A (cloud service) and it was released on 2013-03-27.

    Tags: Telephone Exchanges, Communication Software, Groupware, Voip Software, Message Transfer Agents
  • Libon by Orange S.A.

    Libon is a voice-over-Internet Protocol application developed for Apple Inc.’s iPhone and Android by Orange S.A.’s subsidiary, Orange Vallée. The application can also be used on iOS and Android....

    Latest version of Libon is 4.9.0 and it was released on 2017-04-24.

    Tags: 2012 Software, Ios Software, Portable Software, Social Networking Services, Voip Services, Voip Software, Communication Software
  • vzRoom by Manipeer Limited

    vzRoom is a software system developed by Manipeer Limited for multi-party video conferencing, media sharing and VoIP phone integration. It was launched in July...

    Tags: 2008 Software, File Sharing Software, Shareware, Videotelephony, Voip Software, Instant Messaging
  • Eyeball Chat by Eyeball Networks

    Eyeball Chat is a proprietary freeware VoIP, video telephony soft phone with multiple-protocol instant messaging for Windows PCs, produced by Eyeball Networks in Vancouver, and first released in...

    Latest version of Eyeball Chat is 3.2 and it was released on 2009-10-27.

    Tags: Communication Software, Voip Software, Business Software
  • Line by Naver Corporation

    Line (styled as LINE) is a freeware app for instant communications on electronic devices such as smartphones, tablet computers, and personal computers. Line users exchange texts, images, video and...

    Tags: Android Software, Ios Software, Naver Corporation, Japanese Brands, Blackberry Software, Symbian Software, Firefox Os Software, Instant Messaging Clients, Crossplatform Software, Communication Software, Voip Software, Windows Phone Software, 2011 Software, Universal Windows Platform Apps
  • Nimbuzz by Nimbuzz B.V.

    Nimbuzz is a proprietary cross-platform instant messaging aggregator for smartphones, tablets and personal computers developed by MSM Global Holdings Limited. Nimbuzz has 150 million users in 200...

    Tags: Android Software, Ios Software, Blackberry Software, Windows Mobile Software, Symbian Software, Java Device Platform, Communication Software, Mobile Instant Messaging Clients, Voip Software
  • Ekiga by Damien Sandras

    Ekiga ( formerly called GnomeMeeting) is a VoIP and video conferencing application for GNOME and Microsoft Windows. It is distributed as free software under the terms of the GNU General Public...

    Tags: Voip Software, Free Voip Software, Teleconferencing, Groupware, Collaboration, Social Networking Services, Online Chat, Free Instant Messaging Clients, Gnome Applications, Videotelephony, 2000 Software, Videoconferencing Software That Uses Gtk, Instant Messaging Clients That Use Gtk, Voice Over Ip Clients That Use Gtk
  • KPhone by Team (See web-site)

    KPhone is a SIP User Agent for Linux. It implements the functionality of a VoIP Softphone but is not restricted to this. Licensed under the GNU General Public License, KPhone is free software....

    Latest version of KPhone is Kphone SI 1.2 and it was released on 2008-11-22.

    Tags: Voip Software, Free Voip Software, Software That Uses Qt
  • Mumble by Mumble VOIP Team

    Mumble is a voice over IP (VoIP) application primarily designed for use by gamers and is similar to programs such as TeamSpeak. Mumble uses a client-server architecture which allows users to talk...

    Latest version of Mumble is 1.2.19 and it was released on 2017-01-27.

    Tags: Free Software Programmed In C, Free Voip Software, Internet Software For Linux, Macos Internet Software, Software Using The Bsd License, Voice Over Ip Clients That Use Qt, Voip Software, Windows Internet Software
  • MySIPSwitch

    MySIPSwitch is a Voice over IP (VoIP) open-source software under BSD licence and a free...

    Tags: Voip Software, Free Voip Software, Voip Services, Telephony, Software Using The Bsd License
  • Ring

    GNU Ring (formerly SFLphone) is a SIP-compatible softphone and SIP-based instant messenger for Linux, Microsoft Windows, OS X and Android. Developed and maintained by the Canadian company...

    Latest version of Ring is 1.0 and it was released on 2017-07-21.

    Tags: Voip Software, Free Voip Software, Teleconferencing, Groupware, Collaboration, Social Networking Services, Online Chat, Free Instant Messaging Clients, Gnome Applications, Instant Messaging Clients That Use Gtk, Voice Over Ip Clients That Use Gtk
  • Kamailio by Kamailio Team

    SIP Express Router (SER) is a SIP server licensed under the GNU General Public License, merged in 2012 into Kamailio, one of its forks. It can be configured to act as SIP registrar, proxy or...

    Latest version of Kamailio (former SIP Express Router - SER) is 5.0.2 and it was released on 2017-06-14.

    Tags: Voip Software, Free Voip Software