CSIPSimple is #9 in Top 10 SIP Softphones

CSIPSimple
Native sip app for android device. SIP for calls and instant messages. Android integration with rewriting and filtering rules. Echo cancellation (with various backends : webRTC, speex, simple).

Positions in ratings


#9 in Top 10 SIP Softphones

Alternatives


The best alternative to CSIPSimple is Zoiper