Twenty
An open-source CRM you can self-host or run in the cloud, with AI agents and MCP built in
Y Combinator S23What is Twenty?
Twenty is an open-source CRM you can self-host or run in the cloud, with AI agents and MCP built in. ZeroCrew lists it after checking it works for a company with no employees.
Twenty is a CRM for contacts, companies and deals that you shape to your business: add your own objects and fields, build views, and automate steps with a visual workflow builder. Its code is open on GitHub, so you can host it yourself or use the hosted cloud version. AI agents work inside your data with the same permissions as users, and each cloud workspace includes an MCP server that assistants such as Claude connect to with OAuth to read and update records. Developers can extend it with apps written in TypeScript that add objects, server logic, interface pieces and agents.
By Twenty.
Is Twenty good for a one-person business?
Yes, one person can run Twenty: you sign up and start without a sales call, it's open source, and your agents can use it through its MCP server. ZeroCrew checked this on Twenty's own site.
- Start alone
- Self-serve
- Sign up without a demo, says its site
- Can I leave
- Open source
- You can host it yourself
- Agents can use it
- MCP server
- Connects with
- 10 apps
- Google Workspace, Microsoft 365, Zapier, Slack
How big is Twenty?
1,428 websites link to Twenty, a domain rank of 319 out of 1,000. ZeroCrew checked the counts on November 9, 2026.
Websites linking and domain rank (0 to 1,000) from DataForSEO.
Twenty reviews
Founder reviews of Twenty are mostly positive, from 7 public posts ZeroCrew read and checked with a second AI model. Founders praise clean and simple interface, flexible customization and integrations, and helpful support for self-hosters.
What people say elsewhere
Praised for
- Clean and simple interface
- Flexible customization and integrations
- Helpful support for self-hosters
Complained about
- Updates can break installations
- Limited native sales automation
- Integrations require custom work
- Rough API and documentation
Summarized by AI from 7 public posts on Reddit and Hacker News, November 7, 2026. Not reviews from ZeroCrew founders.
- Twenty v2.0: Self-hosted CRM Reddit
- What are the shortcomings of Twenty? If you switched from it, why? Reddit
- Twenty CRM - Sequence Follow Ups Reddit
- I am trying open source CRM twenty.com but my team is stuck Reddit
- Agents already run unsupervised, and they can code unsupervised too. The real qu... Hacker News
- Is it just me, or are marketing funnels/CRMs getting insanely bloated and expensive? Reddit
What products are similar to Twenty?
HubSpot, Pipedrive, and Clarify do the same job as Twenty (crm). ZeroCrew files every tool by the job it does.
Twenty integrations
Twenty connects with 10 apps, including Google Workspace, Microsoft 365, and Zapier; 7 of them are listed on ZeroCrew too. ZeroCrew read the list from Twenty's own site on November 7, 2026.
Is Twenty right for what you're building?
ZeroCrew's Agent Zero checks Twenty against its site, what founders say about it, and its competitors. The result: a yes, a no, or a better tool for what you describe. Free.