Zulip is described as 'Threaded group chat with topics for live or async collaboration, open-source, supporting self-hosted or cloud use, suited for organized team discussions' and is a very popular instant messenger in the social & communications category. There are more than 100 alternatives to Zulip for a variety of platforms, including Android, iPhone, Web-based, Windows and iPad apps. The best Zulip alternative is Signal, which is both free and Open Source. Other great apps like Zulip are Telegram, Element, Discord and Matrix.
Gem Space - is news and blogs, chats and calls, business communities and friendly communication with like-minded people. We make sure that all our users feel secure: our chats are encrypted, calls are protected and communication spaces are private or public, as desired.
Port is a free, open source, privacy-first messaging app designed for the hyper-connected world. Connect safely without sharing phone numbers, emails, or usernames. With Port, yoOR USERNAMEu can chat, call, share, and stay in touch on your own terms.
Facilitates community collaboration through voice, video, and text chat, integrated docs and tasks, configurable channels, roles, and permissions, seamless mobile and desktop access, rapid message reactions, file sharing, and notification controls for groups.
Bravis is a commercial enterprise video conferencing software for collaborating with business associates, co-workers and customers directly from your desk.
PeerSuite is an open source, decentralized, private alternative to apps like Discord or Slack. All data is sent only between clients through encrypted WebRTC channels.
Dirc is a peer-to-peer web application which uses WebRTC to set up connections between chat participants without requiring a back-end server. The static files can be self-hosted. Other features:
Brand your online video calls, meetings, and conference room in seconds. All done in the browser. No download and installation required. FREE for 2 months!.
Spotbros is an app where you can discover and share all types of content through public chat groups (Spots) or with your friends through private chats.
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