head to head · open source
Harness vs bunup
Harness has 38,798 GitHub stars, 3,451 forks, 106 open issues and last shipped yesterday. bunup has 525 stars, 14 forks, 1 open issues and last shipped 5 months ago. Harness leads on adoption by 7,290% (38,798 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 | ★ 39K | ★ 525 |
| License | Apache-2.0 | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-11-02 | 2026-06-17 |
| Forks | ⑂ 3.5K | ⑂ 14 |
| 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 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 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 bunup
Bunup helps you ship TypeScript/React libraries faster with great DX — built on Bun's native bundler. Performance Instant builds by design. With Bun’s native speed, builds and rebuilds are extremely quick, even in monorepos. Faster feedback loops, higher productivity, calmer flow. 🚀 Quick Start Create a TypeScript file: Build it instantly: Outputs to dist/ with ESM and .d.ts types. Need CommonJS too? Want to generate and sync package exports automatically? Scaffold Spin up a modern, ready to publish TypeScript or React component library (or a basic starter) in 10 seconds: See more in Scaffold with Bunup…
read the full bunup overview →
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Frequently asked questions
Is Harness or bunup more popular?
Harness has 38,798 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 (38,798 stars) or its Apache-2.0 licence terms. Choose bunup if its feature set, stack or MIT licence fits better. Both are self-hostable.