Tragofone - White-label VoIP Softphone with WebRTC and Auto-provisioning
Lingo - Empower Creation and Ensure Brand Consistency. Build and Share libraries of visual assets with your entire team — all from your desktop.
YakYak - Desktop client for Google Hangouts
Phoner - Softphone for VoIP, CAPI und TAPI.
Jami - Application and Data, Collaboration, and Web and Video Conferencing
SessionTalk SIP Softphone - SessionTalk Desktop Softphone is a feature rich SIP Client for Windows devices with Video, Messaging, Push Notifications, Encryption, Dial Plan, Call Transfer and Call Recording.