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TextFree (formerly called Pinger and sometimes stylized as textfree) is a mobile application and web service that allows users to send and receive text messages, as well as make and receive VoIP phone calls, for free over the internet. The service costs nothing because it is supported by ads, but users have the option of paying for an ad-free ...
Jitsi Desktop's conference call window on Mac OS X. Jitsi supports multiple operating systems, including Windows as well as Unix-like systems such as Linux, Mac OS X and BSD. The mobile apps can be downloaded on the App Store for iOS and on the Google Play Store and F-droid platform for Android. [7] It also includes: [50] Attended and blind ...
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.
imo is a proprietary audio/video calling and instant messaging software service. [1] [2] It allows sending music, video, PDFs and other files, along with various free stickers.[3] [4] It supports encrypted group video and voice calls with up to 20 participants.
Viber was originally launched as a VoIP application for voice calling. On 31 March 2011, Viber 2.0 was released which added instant messaging (IM) capabilities. [76] In July 2012 group messaging and an HD Voice engine were added to both Android and iOS applications. [77]
Element (formerly Riot and Vector [11]) is a free and open-source software instant messaging client implementing the Matrix protocol. [12]Element supports end-to-end encryption, [13] private and public groups, sharing of files between users, voice and video calls, and other collaborative features with help of bots and widgets.
Google provides free PC-to-PC voice calling worldwide. As described above, Google Voice users in many countries may make low-cost calls to international phone numbers, and currently may also make free PC-to-phone calls within the United States and Canada. Vincent Paquet, a co-founder of GrandCentral who became a senior product manager at Google ...
Yate (Yet Another Telephony Engine) is a free and open source communications software with support for video, voice and instant messaging. It is an extensible IP PBX under the GPLv2 with linking exception license. [3]