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FreeSWITCH is a free and open-source telephony software for real-time communication protocols using audio, video, text and other forms of media. The software has applications in WebRTC, voice over Internet Protocol (VoIP), video transcoding, Multipoint Control Unit (MCU) functionality and supports Session Initiation Protocol (SIP) features.
In December 2014, online chat website Tinychat was acquired by Paltalk. Paltalk stated that Tinychat would remain a standalone application. [12] Tinychat allowed users to communicate via instant messaging, voice chat, and video chat, and to create their own virtual chat room on any topic. [13]
Google Chat: Email; Google account Yes Google Messages (RCS) Phone number Similar to SMS requirements, RCS messaging requires a valid SIM card to be inserted in the device. RCS chat features may continue to work for up to 14 days, when a SIM card is removed from the device. [108] Yes, only for RCS chats — [clarification needed] Yes ICQ: Phone ...
The app is free and began as one of the first providers of video calls, texting, photo sharing, and games on a 3G network. [3] [4] [5] As of 2018, Tango has more than 400 million registered users. [6] [7] [8] [4] It was rated by PCMag as "the simplest mobile chat application out there, with a good range of support." [5]
Zulip is an open source chat and collaborative software created by Jeff Arnold, Waseem Daher, Jessica McKellar, and Tim Abbott in 2012. [ 3 ] [ 4 ] Today, it is one of the free and open source alternatives to Slack , [ 5 ] with over 60,000 commits contributed by over 900 people.
Jabber.org was started in 1999 [1] and has offered free instant messaging continuously since. It originally served as the development test bed for the jabberd project, the original Jabber/XMPP server. [2] After becoming more stable it also became more popular with end users.
Google Voice is a telephone service that provides a U.S. phone number to Google Account customers [4] in the U.S. and Google Workspace (G Suite by October 2020 [5]) customers in Canada, Denmark, France, the Netherlands, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the contiguous United States. [6]
Element (formerly Riot and Vector [13]) is a free and open-source software instant messaging client implementing the Matrix protocol. [14]Element supports end-to-end encryption, [15] private and public groups, sharing of files between users, voice and video calls, and other collaborative features with help of bots and widgets.