harnessvsSemaphore UI
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| harness | Semaphore UI | |
|---|---|---|
| Score | 80/100 | 73/100 |
| Rank in category | #3 of 28 in CI/CD | #12 of 166 in Developer Tools |
| GitHub stars | 38 748 | 14 336 |
| Stars, last 30 days | +321 | +153 |
| Stable releases, 12 months | 6 | 20 |
| Latest release | v2.28.2 · 20 Apr 2026 | v2.18.31 · 7 Oct 2026 |
| Setup | Easy | Easy |
| Official Docker image | Yes | Yes |
| License | Apache-2.0 | MIT |
| Main language | Go | Go |
Which one should you pick?
harness scores 80/100 against 73/100 for Semaphore UI, so it is the safer default.
Semaphore UI ships more often: 20 stable releases in the past year, against 6 for harness.
harness is growing faster right now (+321 stars in 30 days).
harness details →Semaphore UI details →