open-tagvsRocket.Chat
Two self-hosted Slack alternatives, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| open-tag | Rocket.Chat | |
|---|---|---|
| Score | 45/100 | 82/100 |
| Rank in category | #68 of 110 in Chat | #1 of 13 in Instant Messaging |
| GitHub stars | 213 | 46 348 |
| Stars, last 30 days | — | +187 |
| Stable releases, 12 months | 10 | 36 |
| Latest release | v0.14.3 · 22 Aug 2026 | 8.5.4 · 16 Oct 2026 |
| Setup | Advanced | Moderate |
| Official Docker image | No | Yes |
| License | Apache-2.0 | Other |
| Main language | Typescript | Typescript |
Which one should you pick?
Rocket.Chat scores 82/100 against 45/100 for open-tag, so it is the safer default.
Rocket.Chat ships more often: 36 stable releases in the past year, against 10 for open-tag.
If you want the quickest setup, Rocket.Chat is easier to run; open-tag needs more configuration.
Rocket.Chat is growing faster right now (+187 stars in 30 days).
open-tag details →Rocket.Chat details → All Slack alternatives →
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