head to head · open source
Harness vs swift-build
Harness has 38,798 GitHub stars, 3,451 forks, 106 open issues and last shipped yesterday. swift-build has 2,253 stars, 242 forks, 139 open issues and last shipped yesterday. Harness leads on adoption by 1,622% (38,798 vs 2,253 stars). Harness is written in Go under Apache-2.0; swift-build is written in Swift under Apache-2.0. Harness has attracted 9% as many forks as stars, swift-build 11%. swift-build was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Harness | swift-build | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 2.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Swift |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.5K | ⑂ 242 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Harness if
- You weight community size — 39K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick swift-build if
- You want the swift-build feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Swift
- You evaluated both and swift-build fits your workflow better
About Harness
Harness Harness Open Source is an open source development platform packed with the power of code hosting, automated DevOps pipelines, hosted development environments (Gitspaces), and artifact registries. Overview Harness Open source is an open source development platform packed with the power of code hosting, automated DevOps pipelines, Gitspaces, and artifact registries. Running Harness locally The latest publicly released docker image can be found on harness/harness. To install Harness yourself, simply run the command below. Once the container is up, you can visit in your browser. The Harness image uses a…
read the full Harness overview →
About swift-build
Swift Build ======= Swift Build is a high level build system based on llbuild with great support for building Swift. It is used by SwiftPM, Xcode, and Swift Playground. Usage With SwiftPM Swift Build is the default SwiftPM build system in nightly snapshots of Swift's main branches. In Swift 6.2 and 6.3, it can be enabled by passing build system swiftbuild . When building SwiftPM from source it will be built as a package dependency. When checking out the full set of Swift repositories, SWIFTCI USE LOCAL DEPS=1 swift build package path /path/to/swiftpm can be used to test local changes to Swift Build and SwiftPM…
read the full swift-build overview →
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Frequently asked questions
Is Harness or swift-build more popular?
Harness has 38,798 GitHub stars and swift-build has 2,253. Harness has the larger community by that measure.
Are Harness and swift-build free?
Both are open source. Harness is licensed under Apache-2.0 and swift-build under Apache-2.0. Neither carries a licence fee.
What is the difference between Harness and swift-build?
Harness is written in Go and swift-build in Swift. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Harness or swift-build?
Choose Harness if you want the larger community (38,798 stars) or its Apache-2.0 licence terms. Choose swift-build if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.