head to head · open source
primitives vs mojs
primitives has 19,479 GitHub stars, 1,306 forks, 356 open issues and last shipped 25 days ago. mojs has 18,885 stars, 903 forks, 37 open issues and last shipped 3 months ago. primitives leads on adoption by 3% (19,479 vs 18,885 stars). primitives is written in TypeScript under MIT; mojs is written in CoffeeScript under MIT. primitives has attracted 7% as many forks as stars, mojs 5%. primitives 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 | mojs | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 19K |
| License | MIT | MIT |
| Written in | TypeScript | CoffeeScript |
| Last push | 2026-10-14 | 2026-07-30 |
| Forks | ⑂ 1.3K | ⑂ 903 |
| 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 mojs if
- You want the mojs feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches CoffeeScript
- You evaluated both and mojs fits your workflow better
About primitives
Radix Primitives An open source UI component library for building high quality, accessible design systems and web apps. Radix Primitives is a low level UI component library with a focus on accessibility, customization and developer experience. You can use these components either as the base layer of your design system, or adopt them incrementally. Installation First, install pnpm if you haven't already. Open your terminal and run: Then, install the dependencies: Documentation For full documentation, visit radix ui.com/primitives/docs. Releases For changelog, visit radix ui.com/primitives/docs/overview/releases…
read the full primitives overview →
About mojs
mo · js – The motion graphics toolbelt for the web. Intro mo · js is a javascript motion graphics library that is a fast, retina ready, modular and open source . In comparison to other libraries, it has a different syntax and code animation structure approach. The declarative API provides you a complete control over the animation, making it customizable with ease. The library provides built in components to start animating from scratch like html, shape, swirl, burst and stagger, but also bring you tools to help craft your animation in a most natural way. Using mojs on your site will enhance the user experience…
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Frequently asked questions
Is primitives or mojs more popular?
primitives has 19,479 GitHub stars and mojs has 18,885. primitives has the larger community by that measure.
Are primitives and mojs free?
Both are open source. primitives is licensed under MIT and mojs under MIT. Neither carries a licence fee.
What is the difference between primitives and mojs?
primitives is written in TypeScript and mojs in CoffeeScript. 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 mojs?
Choose primitives if you want the larger community (19,479 stars) or its MIT licence terms. Choose mojs if its feature set, stack or MIT licence fits better. Both are self-hostable.