OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Tragofone - White-label VoIP Softphone with WebRTC and Auto-provisioning
Snagit - Screen Capture Software for Windows and Mac
tSIP - tomeko.net/software: SIP client for Windows.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Lingo - Empower Creation and Ensure Brand Consistency. Build and Share libraries of visual assets with your entire team — all from your desktop.