head to head · open source
lemo-opuscar vs openharness
lemo-opuscar has 2,380 GitHub stars, 250 forks, 0 open issues and last shipped 2 days ago. openharness has 1,258 stars, 106 forks, 40 open issues and last shipped today. lemo-opuscar leads on adoption by 89% (2,380 vs 1,258 stars). lemo-opuscar is written in JavaScript under MIT; openharness is written in TypeScript under MIT. lemo-opuscar has attracted 11% as many forks as stars, openharness 8%. openharness was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai-agents, claude-code), 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
| lemo-opuscar | openharness | |
|---|---|---|
| GitHub stars | ★ 2.4K | ★ 1.3K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-13 | 2026-10-15 |
| Forks | ⑂ 250 | ⑂ 106 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick lemo-opuscar if
- You weight community size — 2.4K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- 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 TypeScript
- You evaluated both and openharness fits your workflow better
About lemo-opuscar
Lemo Opuscar is an MIT licensed Claude Code skill that turns a coding agent into a film director, shipping 43 film styles — each with a reusable style prompt and a demo short film made entirely in code — for developers, designers and creative coders who want finished video without a video model.
read the full lemo-opuscar 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 lemo-opuscar or openharness more popular?
lemo-opuscar has 2,380 GitHub stars and openharness has 1,258. lemo-opuscar has the larger community by that measure.
Are lemo-opuscar and openharness free?
Both are open source. lemo-opuscar is licensed under MIT and openharness under MIT. Neither carries a licence fee.
What is the difference between lemo-opuscar and openharness?
lemo-opuscar is written in JavaScript and openharness 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, lemo-opuscar or openharness?
Choose lemo-opuscar if you want the larger community (2,380 stars) or its MIT licence terms. Choose openharness if its feature set, stack or MIT licence fits better. Both are self-hostable.