Description: CSipSimple is an open source SIP client for Android that allows you to make VoIP calls over Wi-Fi or mobile data. It supports common SIP features like call transfer, call forwarding, call waiting, 3-way conferencing, etc.
Type: software
Pricing: Open Source
Description: YateClient is an open-source softphone application that allows making VoIP calls over the internet. It supports popular protocols like SIP and IAX and works with most VoIP providers. YateClient has a simple interface and advanced features like call recording, conferencing, and SMS.
Type: software
Pricing: Open Source