Salala Call is a mobile dialer that allows you to make VoIP calls from any PC.
Zoiper Classic BIZ provides secure high-quality voice calls and conference.
A basic SIP Softphone that allows to connect to VoIP PBX and providers.
iaxLite is a simple and easy-to-use softphone based on iaxclient library..
PortSIP Sutions, Inc.
Softphone compatible with SIP for voice over IP PBX or international providers.
Visual Sound Recorder is a sound recording program.