head to head · open source
Twenty vs Mike
Twenty has 56,947 GitHub stars, 9,143 forks, 205 open issues and last shipped yesterday. Mike has 4,244 stars, 1,319 forks, 68 open issues and last shipped yesterday. Twenty leads on adoption by 1,242% (56,947 vs 4,244 stars). Twenty is written in TypeScript under a custom or non-standard licence; Mike is written in TypeScript under AGPL-3.0. Twenty has attracted 16% as many forks as stars, Mike 31%. Twenty 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
| Twenty | Mike | |
|---|---|---|
| GitHub stars | ★ 57K | ★ 4.2K |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 9.1K | ⑂ 1.3K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Twenty if
- You weight community size — 57K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Mike if
- You want the Mike 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 Mike fits your workflow better
About Twenty
Twenty is an open source CRM platform built for technical teams that need to design and deploy custom customer relationship management systems without vendor lock in. It provides a framework for defining data models, views, workflows, and AI powered agents entirely as code, enabling full version control and integration into existing development pipelines. The project lives in the JavaScript/TypeScript ecosystem and uses modern tooling including NestJS, React, PostgreSQL, and Redis.
read the full Twenty overview →
About Mike
Mike is an open source legal AI platform for document review, drafting, and legal research. It is built as a TypeScript application with a Next.js frontend, an Express backend, Supabase Auth and Postgres, and Cloudflare R2 compatible object storage. The project sits in the legal technology and business software ecosystem and uses the GNU Affero General Public License v3.0.
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Frequently asked questions
Is Twenty or Mike more popular?
Twenty has 56,947 GitHub stars and Mike has 4,244. Twenty has the larger community by that measure.
Are Twenty and Mike free?
Both are open source. Twenty has no licence declared in this registry, and Mike is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Twenty and Mike?
Twenty is written in TypeScript and Mike 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, Twenty or Mike?
Choose Twenty if you want the larger community (56,947 stars) or its Custom / other licence terms. Choose Mike if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.