GroupMe is a simple group chat app owned by Meta, popular for its ease of use and cross‑platform support. If you're looking for free instant‑messaging solutions that offer richer features, stronger privacy, or different community styles, the list below highlights 20 noteworthy alternatives.
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End‑to‑end encrypted messenger with voice/video calls, disappearing messages, and open‑source code.
Cloud‑based chat with large group limits (up to 200 k members), bots, channels, and secret chats with self‑destruct timers.
Gaming‑focused platform offering text, voice, and video channels, server roles, and robust community moderation tools.
Team collaboration hub with searchable message history (10 k messages), integrations, and file sharing.
Chat, video meetings, and file collaboration integrated with Office Online; supports up to 500,000 users per organization.
Cross‑platform messenger with end‑to‑end encryption, public chats, and built‑in VoIP calls.
Popular in Asia; offers stickers, timeline posts, group calls, and a rich ecosystem of mini‑apps.
All‑in‑one app for messaging, voice/video calls, social moments, and mobile payments (free core features).
Matrix‑based open‑source messenger with end‑to‑end encryption, bridges to other networks, and self‑hosting options.
Self‑hosted open‑source chat platform offering real‑time translation, video conferencing, and extensive integrations.
Open‑source Slack alternative focused on security and self‑hosting, with channel organization and file sharing.
Threaded open‑source chat that combines real‑time and asynchronous messaging, ideal for organized discussions.
Secure messenger with end‑to‑end encryption, voice/video calls, and collaboration tools for teams.
Decentralized, peer‑to‑peer messenger with encrypted text, voice, and video; no central servers.
Privacy‑first Swiss messenger offering anonymous accounts, end‑to‑end encryption, and no phone number required.
Open‑source iOS app that uses OTR/XMPP for encrypted messaging, focused on privacy.
Cross‑platform IRC client with a modern UI, scripting support, and plug‑in architecture.
Low‑latency, open‑source voice chat primarily used by gamers; supports encrypted communication.
Distributed, peer‑to‑peer messenger and video‑conference app with end‑to‑end encryption and no central server.