Below is a list of of available Softphones that have been tested and extensively used with the Sippy Softswitch:
X-Lite (How to setup)
Windows 2000/XP, Mac OS X
(download)
3CX (How to setup)
Windows, Linux, MAC OS X, IOS, Android
(download)
Microsip (How to setup)
Windows XP/Vista/Windows 7
(download)
eyeBeam
Windows 2000/XP/Vista, Mac OS X
(download)
Ekiga
Windows, Linux
(download)
Express Talk
Windows 98/ME/2000/XP/2003/Vista, Mac OS X
(download)
PhonerLite
Windows
(download)
KPhone
Linux
(download)
Linphone (How to setup)
Linux, Windows, FreeBSD, MacOS, IOS, Android
(download)
Twinkle
Linux
(download)
ZoiPer (How to setup)
Windows, Mac OS X, Linux
(download)
Blink
Windows, Linux, MAC OS X
(download)