Wire offers secure, end‑to‑end encrypted messaging for teams and individuals. Looking for free instant‑messaging apps that provide comparable features—privacy, cross‑platform support, and rich collaboration tools? Below is a curated list of 20 free alternatives.
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Open‑source, end‑to‑end encrypted messenger with voice/video calls, disappearing messages, and strong privacy protections.
Cloud‑based messaging app with secret chats (E2EE), large group support, bots, and file sharing up to 2 GB.
Decentralized, open‑source chat client built on the Matrix protocol; offers E2EE, bridges to other services, and rich collaboration features.
Peer‑to‑peer, fully distributed messenger with audio/video calls, file sharing, and no central server; all communications are encrypted.
Privacy‑first messenger that routes messages through onion‑routed network; no phone number required and offers strong anonymity.
Open‑source team chat platform with self‑hosted option, E2EE, voice/video calls, and extensive integrations.
Self‑hosted, open‑source Slack alternative offering private channels, E2EE (via plugins), and robust DevOps integrations.
Threaded open‑source chat app that combines real‑time and asynchronous messaging; free cloud hosting available.
Free voice, video, and text chat platform popular with communities; supports servers, screen sharing, and bots.
Widely used team collaboration tool offering channels, file sharing, and limited message history in its free plan.
Peer‑to‑peer instant messenger with encrypted text, voice, and video; no central server required.
Decentralized messenger designed for activists; works over Bluetooth, Wi‑Fi, or Tor for offline and highly private chats.
Secure messaging combined with encrypted file storage and Git; all communications are end‑to‑end encrypted.
Popular mobile messenger with end‑to‑end encrypted chats, voice/video calls, and group messaging.
Free cross‑platform messenger offering encrypted one‑to‑one chats, group calls, and stickers.
Feature‑rich messenger with stickers, voice/video calls, and free cloud storage; offers optional end‑to‑end encryption.
Simple mobile chat app with bots and group chats; free to use without requiring a phone number.
Integrated with Google Workspace; offers direct messaging, rooms, and collaboration on Google Docs in a free tier.
Long‑standing Microsoft messenger with free video calls, instant messaging, and screen sharing.