Communication · paid tool
Microsoft Teams alternatives
Team chat, meetings, and file collaboration in Microsoft 365.
Free alternatives
Highest score first. The score weighs licence openness, repository activity, traction, feature coverage, and cost; factors without data are left out and the rest are reweighted.
Rocket.Chat
Ranking score 94.1/100
Team messaging platform with channels, video, and federation.
- Licence
- MIT
- Platforms
- web, macos, windows, linux, ios, android, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release October 5, 2026
- GitHub stars
- 46,331
- Last verified
- October 24, 2026
Why this rank
Score breakdown for Rocket.Chat Factor Points Weight Licence opennessMIT licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity46331 GitHub stars 19.9 20% Feature coverage11 of 14 curated capability tags covered 15.7 20% Costopen-core pricing model 8.5 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.
Mattermost
Ranking score 92.4/100
Self-hosted team chat with channels, calls, and integrations.
- Licence
- AGPL-3.0
- Platforms
- macos, windows, linux, ios, android, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release October 22, 2026
- GitHub stars
- 39,437
- Last verified
- October 24, 2026
Why this rank
Score breakdown for Mattermost Factor Points Weight Licence opennessAGPL-3.0 licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity39437 GitHub stars 19.6 20% Feature coverage10 of 14 curated capability tags covered 14.3 20% Costopen-core pricing model 8.5 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.
Element
Ranking score 91.8/100
Matrix client for encrypted team chat and community rooms.
- Licence
- AGPL-3.0
- Platforms
- web, macos, windows, linux, ios, android, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release October 16, 2026
- GitHub stars
- 13,613
- Last verified
- October 24, 2026
Why this rank
Score breakdown for Element Factor Points Weight Licence opennessAGPL-3.0 licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity13613 GitHub stars 17.6 20% Feature coverage11 of 14 curated capability tags covered 15.7 20% Costopen-core pricing model 8.5 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.
Jitsi Meet
Ranking score 91.8/100
Browser video meetings with screen sharing and no account needed.
- Licence
- Apache-2.0
- Platforms
- web, macos, windows, linux, ios, android, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release September 14, 2026
- GitHub stars
- 30,146
- Last verified
- October 24, 2026
Why this rank
Score breakdown for Jitsi Meet Factor Points Weight Licence opennessApache-2.0 licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity30146 GitHub stars 19.1 20% Feature coverage7 of 11 curated capability tags covered 12.7 20% Costfree pricing model 10 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.
Nextcloud Talk
Ranking score 89.1/100
Chat and video calls inside a self-hosted Nextcloud instance.
- Licence
- AGPL-3.0
- Platforms
- web, macos, windows, linux, ios, android, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release October 15, 2026
- GitHub stars
- 2,220
- Last verified
- October 24, 2026
Why this rank
Score breakdown for Nextcloud Talk Factor Points Weight Licence opennessAGPL-3.0 licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity2220 GitHub stars 14.2 20% Feature coverage9 of 11 curated capability tags covered 16.4 20% Costopen-core pricing model 8.5 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.
BigBlueButton
Ranking score 87.8/100
Virtual classroom with presentations, chat, and recording.
- Licence
- LGPL-3.0
- Platforms
- web, self-hosted
- Self-hostable
- Yes
- Repo activity
- Last release October 14, 2026
- GitHub stars
- 9,255
- Last verified
- October 24, 2026
Why this rank
Score breakdown for BigBlueButton Factor Points Weight Licence opennessLGPL-3.0 licence (open); self-hostable 25 25% Repository activityLast activity 0 day(s) before 2026-10-26 25 25% Popularity9255 GitHub stars 16.9 20% Feature coverage6 of 11 curated capability tags covered 10.9 20% Costfree pricing model 10 10% Points add up to the score. Factors without data are left out and the remaining weights are renormalised.