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CLUSTER CHAT-FILE-MESSAGING · 33 ENTRIES · EARLIEST ENTRY 2026-04-26

Self-hosted team chat apps

This cluster consists of self-hosted team chat applications offering messaging, file sharing, and often voice/video calls. The dated entries before the index start appear sporadically from 2016 to 2026, with a small grouping in 2023 and again in early 2026. Traction is led by once-campfire-rust with 87 stars, far ahead of lets-chat (6) and sideporch (2).

Entry timeline

ENTRY TIMELINE

AUG 2016: 1MAR 2018: 1JUN 2019: 1JUN 2022: 1APR 2023: 1OCT 2023: 1NOV 2023: 1FEB 2026: 1APR 2026: 1MAY 2026: 1JUL 2026: 3AUG 2026: 6SEP 2026: 10OCT 2026: 4
AUG 2016OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 2 hand-coded · 18 unlabelled

Operator · 8 hobby · 2 commercial · 6 open source · 4 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 20 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01once-campfire-rust95★11 days—commercialSelf-hosted team chat application providing real-time messaging, posts, and file sharing.
  2. 02lets-chat6★23 days—hobbySelf-hosted chat application offering public and private rooms, direct messaging, voice and video calls, reactions, and scheduled messages for teams or communities.
  3. 03sideporch2★12 dayslivehobbySelf-hosted team chat application that provides channels, threads, direct messages, search, and Slack-compatible integrations for private groups.
  4. 04opencorpochat2★2 days—Self-hosted team chat for organizations up to 200 people that provides channels, threads, calls, search, integrations, and single sign-on.
  5. 05Teamspeak_Media_chat1★1 daylivehobbyTeamSpeak plugin that displays inline images, GIFs, videos and file cards in chat while keeping files on the user's own server.
  6. 06burst1★12 days—Self-hosted team messaging platform offering channels, direct messages, threads, search, file sharing, and single sign-on.
  7. 07Mattermost Beta0★22 daysliveopen sourceSelf-hosted workplace messaging app for private groups, file sharing, and integrations with existing systems.
  8. 08Mattermost0★2 molivehand-codedopen sourceTeam collaboration platform offering messaging, channels, and workflow integrations as a self-hosted alternative to commercial chat services.
  9. 09rainlit0★13 daysliveSelf-hosted chat app for friends that provides voice and video calls, messaging, file sharing, and group spaces with text and voice channels.
  10. 10cordlite0★3 days—hobbySelf-hostable chat server and web client for private group conversations with real-time text, voice channels, invite links, and no sign-up.
  11. 11omachat0★13 daysliveopen sourceChat app for Linux and Omarchy that supports voice, text, and screen sharing with a self-hosted server.
  12. 12LibraCord1★24 dayslivehobbySelf-hosted federated chat application with text channels, direct messages, voice and video rooms, and screen sharing.
  13. 13Nextcloud Talk0★16 dayslivehand-codedopen sourceSelf-hosted video calling and chat app for secure team communication through your own server.
  14. 14sharkord-next0★2 days—hobbyOpen-source mobile chat client that connects to self-hosted servers to bring messaging and voice to phones and watches.
  15. 15digitalgrub-chat0★14 days—commercialSelf-hosted chat app for teams that provides group messaging, voice and video calls, meetings, and file sharing on mobile and web.
  16. 16grupo-lite0★23 days—hobbySelf-hosted group chat app with text channels, live voice rooms, and screen sharing, letting users join with just a nickname.
  17. 17Real-Time-Collaboration0★22 dayslivehobbyTeam communication platform that provides real-time chat, channels, file sharing, video calling, and polls for organizations and communities.
  18. 18Virola Messenger0★1 moliveMessaging app for distributed teams that provides persistent voice and video meetings, Kanban issue tracking, and self-hosted server options.
  19. 19rocketchat-server0★1 moliveopen sourceSelf-hosted server platform providing team chat, channels, and collaboration tools for organizations to run internally.
  20. 20rocketchat-server-standalone0★21 daysliveopen sourceStandalone self-hosted server package providing team chat, channels, and collaboration tools for organizations without external dependencies.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.