Open Source Video Calls and Chat
Ranked in these QuestionsQuestion Ranking
Pro Supports SIP accounts
well implemented SIP SIMPLE (texting), SIP presence, XCAP.
Pro OMEMO encryption without plugin
Secure Jabber Texting, better than legacy sms texting.
Pro Video calls
Pro supports XEP-0016, Privacy Lists
Jabber Texting apps without Privacy Lists are WOEFULLY deficient
Pro Cross platform
Mac, Windows & Linux availability.
Pro Encryption out of the box
Encryption for chat, desktop sharing, and web confrencing available.
Project available on github for anyone to contribute to or use.
Con Abandoned android development
They switched focus to Jitsi Meet client for android.