head to head · open source
Leon vs Scira
Leon has 17,518 GitHub stars, 1,469 forks, 112 open issues and last shipped yesterday. Scira has 11,893 stars, 1,500 forks, 25 open issues and last shipped 1 months ago. Leon leads on adoption by 47% (17,518 vs 11,893 stars). Leon is written in TypeScript under MIT; Scira is written in TypeScript under AGPL-3.0. Leon has attracted 8% as many forks as stars, Scira 13%. Leon 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
| Leon | Scira | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 12K |
| License | MIT | AGPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-08-12 |
| Forks | ⑂ 1.5K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Leon if
- You weight community size — 18K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Scira if
- You want the Scira feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and Scira fits your workflow better
About Leon
Leon is open source personal AI assistant. It lives in Node.js and TypeScript ecosystem, under AI Interaction & Interfaces category. Project builds around tools, context, memory, and agentic execution. It aims to stay practical, privacy aware, and grounded in real environment. Leon can operate locally, use dedicated tools instead of relying on free form guessing, and complete tasks from start to finish across deterministic workflows and agent style execution.
About Scira
Scira is a minimalistic AI powered search engine and agentic research platform, formerly called MiniPerplx. It lives in the TypeScript and AI interaction ecosystem, and it is licensed under AGPL 3.0. The project helps users find information on the internet and cites the sources used to form the answer.
read the full Scira overview →
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Frequently asked questions
Is Leon or Scira more popular?
Leon has 17,518 GitHub stars and Scira has 11,893. Leon has the larger community by that measure.
Are Leon and Scira free?
Both are open source. Leon is licensed under MIT and Scira under AGPL-3.0. Neither carries a licence fee.
What is the difference between Leon and Scira?
Leon is written in TypeScript and Scira 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, Leon or Scira?
Choose Leon if you want the larger community (17,518 stars) or its MIT licence terms. Choose Scira if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.