CSipSimple (original) (raw)

CSipSimple is a Voice over Internet Protocol (VoIP) application for Google Android operating system using the Session Initiation Protocol (SIP). It is open source and free software released under the GPL-3.0-or-later license. The project was abandoned in October 2017. As of 26 May 2019, CSIP no longer has an active website and is no longer available on the Play Store. Users with CSip already installed did not have the app removed from their device.