head to head · open source
Harness vs corrosion
Harness has 38,798 GitHub stars, 3,451 forks, 106 open issues and last shipped yesterday. corrosion has 1,519 stars, 157 forks, 71 open issues and last shipped 4 days ago. Harness leads on adoption by 2,454% (38,798 vs 1,519 stars). Harness is written in Go under Apache-2.0; corrosion is written in CMake under MIT. Harness has attracted 9% as many forks as stars, corrosion 10%. Harness 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 | corrosion | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 1.5K |
| License | Apache-2.0 | MIT |
| Written in | Go | CMake |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 3.5K | ⑂ 157 |
| 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 corrosion if
- You want the corrosion feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches CMake
- You evaluated both and corrosion 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 corrosion
Corrosion Corrosion, formerly known as cmake cargo, is a tool for integrating Rust into an existing CMake project. Corrosion can automatically import executables, static libraries, and dynamic libraries from a workspace or package manifest ( Cargo.toml file). Features Automatic Import of Executable, Static, and Shared Libraries from Rust Crate Easy Installation of Rust Executables Trivially Link Rust Executables to C/C++ Libraries in Tree Multi Config Generator Support Simple Cross Compilation Sample Usage with FetchContent Using the CMake FetchContent module allows you to easily integrate corrosion into your…
read the full corrosion overview →
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Frequently asked questions
Is Harness or corrosion more popular?
Harness has 38,798 GitHub stars and corrosion has 1,519. Harness has the larger community by that measure.
Are Harness and corrosion free?
Both are open source. Harness is licensed under Apache-2.0 and corrosion under MIT. Neither carries a licence fee.
What is the difference between Harness and corrosion?
Harness is written in Go and corrosion in CMake. 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 corrosion?
Choose Harness if you want the larger community (38,798 stars) or its Apache-2.0 licence terms. Choose corrosion if its feature set, stack or MIT licence fits better. Both are self-hostable.