head to head · open source
Harness vs FlubuCore
Harness has 38,798 GitHub stars, 3,451 forks, 106 open issues and last shipped yesterday. FlubuCore has 937 stars, 99 forks, 31 open issues and last shipped 7 months ago. Harness leads on adoption by 4,041% (38,798 vs 937 stars). Harness is written in Go under Apache-2.0; FlubuCore is written in C# under MIT. Harness has attracted 9% as many forks as stars, FlubuCore 11%. Harness was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (build-automation, continuous-integration), so they are genuine substitutes rather than adjacent tools.
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 | FlubuCore | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 937 |
| License | Apache-2.0 | MIT |
| Written in | Go | C# |
| Last push | 2026-11-02 | 2026-03-25 |
| Forks | ⑂ 3.5K | ⑂ 99 |
| 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 FlubuCore if
- You want the FlubuCore feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and FlubuCore 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 FlubuCore
English 中文 FlubuCore Introduction Features and Advantages Getting Started Examples Contributing Backers and Sponsors Acknowledgements Introduction "FlubuCore Fluent Builder Core" is a cross platform build and deployment automation system. You can define your build and deployment scripts in C using an intuitive fluent interface. This gives you code completion, IntelliSense, debugging, FlubuCore custom analyzers, and native access to the whole .NET ecosystem inside of your scripts. FlubuCore offers a .net (core) console application that uses power of roslyn to compile and execute scripts. Above example can be run…
read the full FlubuCore overview →
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Frequently asked questions
Is Harness or FlubuCore more popular?
Harness has 38,798 GitHub stars and FlubuCore has 937. Harness has the larger community by that measure.
Are Harness and FlubuCore free?
Both are open source. Harness is licensed under Apache-2.0 and FlubuCore under MIT. Neither carries a licence fee.
What is the difference between Harness and FlubuCore?
Harness is written in Go and FlubuCore in C#. 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 FlubuCore?
Choose Harness if you want the larger community (38,798 stars) or its Apache-2.0 licence terms. Choose FlubuCore if its feature set, stack or MIT licence fits better. Both are self-hostable.