Semaphore alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Semaphore: support tiers cost extra on cloud, and smaller ecosystem than GitHub Actions. We ranked 5 alternatives by how directly each one replaces Semaphore, then by reviews, real visits and how recently each app's facts were checked against its own website. CircleCI currently ranks first.

Quick comparison

#	App	Pricing	Open source	Platforms	Verified facts	Score
1	Woodpecker CI	Open source	Yes	Self-hosted, Linux	3 of 3	57.2

1. Woodpecker CITop pick
Best for: Self-hosters running Gitea or Forgejo who want light, container-based CI
Open sourceSelf-hostableSelf-hosted, Linux
57.2
score / 100
Why switch from Semaphore
Lightweight free self-hosted CI if you don't need Kubernetes.
Pros
Very light server and agents
Every step runs in a container
Works with Forgejo, Gitea, GitHub and GitLab
Cons
Modest feature set
Community-run with no commercial support
Fewer plugins than larger CI systems
Visit Woodpecker CI Details and reviews
How this score is calculated
Editorial fit ×0.369
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Woodpecker CI a good Semaphore alternative?
Verified facts
3 of 3 verified
License
Apache-2.0
Checked Oct 25, 2026github.com(opens source in a new tab)
Price
Free
Checked Oct 25, 2026woodpecker-ci.org(opens source in a new tab)
Execution
Docker containers
Checked Oct 25, 2026woodpecker-ci.org(opens source in a new tab)

The best Semaphore alternative for…

The highest-ranked app in this list for each need.

Best Semaphore alternative for most people

CircleCI

Similar hosted CI with a free plan and more machine types.

Best Semaphore alternative for a free option

Woodpecker CI

Lightweight free self-hosted CI if you don't need Kubernetes.

Best Semaphore alternative for a free plan you can upgrade

GitHub Actions

Built-in CI for GitHub repos with free public usage.

Best Semaphore alternative for open source

GitLab

CI/CD integrated with hosting and security scanning.

Best Semaphore alternative for self-hosting

CircleCI

Similar hosted CI with a free plan and more machine types.

Best Semaphore alternative for Linux

Woodpecker CI

Lightweight free self-hosted CI if you don't need Kubernetes.

Best Semaphore alternative for working in the browser

Buildkite

Hybrid model keeping builds on your own machines.

Semaphore alternatives: common questions

What is the best alternative to Semaphore?

CircleCI ranks first right now. Similar hosted CI with a free plan and more machine types. GitHub Actions and Buildkite follow it in our ranking.

Is there a free alternative to Semaphore?

Yes. CircleCI (free plan + paid), GitHub Actions (free plan + paid), Buildkite (free plan + paid) and Woodpecker CI (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Semaphore?

Yes: Woodpecker CI and GitLab. Woodpecker CI and GitLab can also be self-hosted.

Which Semaphore alternatives work on Linux?

Woodpecker CI runs on Linux.

Why do people switch from Semaphore?

The complaints we hear most: support tiers cost extra on cloud; smaller ecosystem than GitHub Actions; self-hosting requires Kubernetes.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Semaphore, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.