Gotalk
Description: Gotalk is an open source, self-hosted team chat and collaboration platform. It offers features like public/private channels, direct messaging, file sharing, search, integrations and more. Gotalk aims to provide a simple and easy to use communication tool for teams.
Type: software
Pricing: Open Source
Signal
Description: Signal is a free, open source, encrypted messaging and voice calling app. It offers end-to-end encryption for secure communication. With Signal, users can send encrypted messages, make voice and video calls, and share media with individuals or groups.
Type: software
Pricing: Free