head to head · open source
Harness vs bunup
Harness has 38,384 GitHub stars, 3,398 forks, 106 open issues and last shipped 2 days ago. bunup has 525 stars, 15 forks, 1 open issues and last shipped 3 months ago. Harness leads on adoption by 7,211% (38,384 vs 525 stars). Harness is written in Go under Apache-2.0; bunup is written in TypeScript under MIT. Harness has attracted 9% as many forks as stars, bunup 3%. 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 | bunup | |
|---|---|---|
| GitHub stars | ★ 38K | ★ 525 |
| License | Apache-2.0 | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-09-17 | 2026-06-17 |
| Forks | ⑂ 3.4K | ⑂ 15 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Harness if
- You weight community size — 38K 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 bunup if
- You want the bunup feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and bunup fits your workflow better
About Harness
Harness Open Source is an Apache 2.0, Go based developer platform that combines Git source control management, CI/CD pipelines, Gitspaces hosted development environments and artifact registries into one self hostable system for engineering teams that want end to end software delivery without stitching four separate products together.
read the full Harness overview →
About bunup
Bunup is an MIT licensed TypeScript and React library bundler built on Bun's native bundler, made for developers who publish packages to npm and want fast builds with minimal configuration.
read the full bunup overview →
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Frequently asked questions
Is Harness or bunup more popular?
Harness has 38,384 GitHub stars and bunup has 525. Harness has the larger community by that measure.
Are Harness and bunup free?
Both are open source. Harness is licensed under Apache-2.0 and bunup under MIT. Neither carries a licence fee.
What is the difference between Harness and bunup?
Harness is written in Go and bunup in TypeScript. 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 bunup?
Choose Harness if you want the larger community (38,384 stars) or its Apache-2.0 licence terms. Choose bunup if its feature set, stack or MIT licence fits better. Both are self-hostable.