The best Encrypted Chat alternative to MicroSIP is Wire. It's not free, so if you're looking for a free alternative, you could try Wire or Linphone. If that doesn't suit you, our users have ranked more than 25 alternatives to MicroSIP and five of them are Encrypted Chat Apps so hopefully you can find a suitable replacement. Other interesting Encrypted Chat App alternatives to MicroSIP are Tragofone and Silent Phone.
Secure communication platform featuring encrypted chats and calls, file and media sharing, self-deleting messages, device verification, group collaboration, and customizable settings. Supports use across multiple devices with no phone number required for access.
Linphone is one of the most famous open source softphones in the world. It is fully SIP-based, for all calling, presence and IM features.
Tragofone - a white-label softphone backed by WebRTC and auto-provisioning is a perfect choice to maintain uninterrupted business communication anywhere, anytime.
Silent Phone – Secure Encrypted Video & Voice Mobile Phone Calls
You now have the ability to have secure encrypted phone calls between Silent Circle members, anywhere, anytime, with complete control.
Make a secure call as easy as an ordinary call and be sure of real safety.
Switzerland
France
EU
Netherlands
India
United States
its not a SIP client, its PAID social network.