head to head · open source
primitives vs openharness
primitives has 19,309 GitHub stars, 1,247 forks, 356 open issues and last shipped 2 months ago. openharness has 529 stars, 50 forks, 40 open issues and last shipped yesterday. primitives leads on adoption by 3,550% (19,309 vs 529 stars). primitives is written in TypeScript under MIT; openharness is written in C under MIT. primitives has attracted 6% as many forks as stars, openharness 9%. openharness 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
| primitives | openharness | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 529 |
| License | MIT | MIT |
| Written in | TypeScript | C |
| Last push | 2026-08-08 | 2026-09-21 |
| Forks | ⑂ 1.2K | ⑂ 50 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick primitives if
- You weight community size — 19K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick openharness if
- You want the openharness feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C
- You evaluated both and openharness fits your workflow better
About primitives
Radix Primitives is an MIT licensed, TypeScript UI component library for React, maintained by WorkOS, that gives teams building design systems and web apps low level components focused on accessibility, customization and developer experience.
read the full primitives overview →
About openharness
OpenHarness is MIT licensed open source software and hardware, written in C, that gives people who build with coding agents one place to run those agents alongside domain tools and live viewers for work beyond software — CAD parts, circuit boards, data analysis, and video.
read the full openharness overview →
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Frequently asked questions
Is primitives or openharness more popular?
primitives has 19,309 GitHub stars and openharness has 529. primitives has the larger community by that measure.
Are primitives and openharness free?
Both are open source. primitives is licensed under MIT and openharness under MIT. Neither carries a licence fee.
What is the difference between primitives and openharness?
primitives is written in TypeScript and openharness 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, primitives or openharness?
Choose primitives if you want the larger community (19,309 stars) or its MIT licence terms. Choose openharness if its feature set, stack or MIT licence fits better. Both are self-hostable.