head to head · open source
Twenty vs harvey
Twenty has 58,619 GitHub stars, 9,604 forks, 205 open issues and last shipped today. harvey has 1,716 stars, 337 forks, 12 open issues and last shipped today. Twenty leads on adoption by 3,316% (58,619 vs 1,716 stars). Twenty is written in TypeScript under a custom or non-standard licence; harvey is written in Python under MIT. Twenty has attracted 16% as many forks as stars, harvey 20%. harvey 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.
← all 20902 open source comparisons
Side by side
| Twenty | harvey | |
|---|---|---|
| GitHub stars | ★ 59K | ★ 1.7K |
| License | Custom / other | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-10-20 | 2026-10-20 |
| Forks | ⑂ 9.6K | ⑂ 337 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Twenty if
- You weight community size — 59K 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 harvey if
- You want the harvey feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and harvey fits your workflow better
About Twenty
The 1 Open Source CRM Website · Documentation · Roadmap · Discord · Figma Why Twenty Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack. Learn more about why we built Twenty Installation Cloud The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date. Build an app Scaffold a new app with the Twenty CLI: Define objects, fields, and views as code: Then ship…
read the full Twenty overview →
About harvey
Harvey An autonomous sales agent that runs on your Claude Code or Codex subscription. Harvey finds businesses worth selling to, learns something specific about each one, writes cold email that references it, sends it, reads the replies, and works the conversation toward a meeting. It runs on your machine, in a loop, on its own. The unusual part: there is no model API bill. Harvey uses your Claude Pro or Max subscription through Claude Code, or your ChatGPT subscription through Codex. Model calls use the plan you already pay for, without an API key or per token API billing. Claude is the default; Codex is an opt…
read the full harvey overview →
More in Business Software
Related comparisons
More CRM & Sales projects
Compare either of these against the rest of the CRM & Sales field.
Frequently asked questions
Is Twenty or harvey more popular?
Twenty has 58,619 GitHub stars and harvey has 1,716. Twenty has the larger community by that measure.
Are Twenty and harvey free?
Both are open source. Twenty has no licence declared in this registry, and harvey is licensed under MIT. Both are free to self-host.
What is the difference between Twenty and harvey?
Twenty is written in TypeScript and harvey in Python. 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 harvey?
Choose Twenty if you want the larger community (58,619 stars) or its Custom / other licence terms. Choose harvey if its feature set, stack or MIT licence fits better. Both are self-hostable.