3CX Ltd - http://www.3cx.com

Developer homepage : 3CX Ltd

3CX VOIP Phone for Windows 1.0
Free SIP Phone. Use with any SIP/VOIP service

freeware

1.6 MB
download

3CX FREE VOIP Phone for Windows 6.0
Free VoIP Phone. Use with any VoIP Provider

freeware

3.3 MB
download

3CX Phone System for Windows Free 7.1
Free VoIP PBX - 3CX Phone System for Windows

freeware

41.4 MB
download

3CX VOIP Phone 3.1.6288 3.1.6288
Free VOIP/SIP phone. Use your PC as a phone.

freeware

2.2 MB
download