Twenty

Twenty is an open-source customer relationship management (CRM) platform aimed at modern, technical teams. Marketed as the #1 Open Source CRM, it provides production-grade building blocks for a data model, permissions, authentication, and workflow engine that teams would otherwise have to rebuild themselves.

Users can compose a custom CRM and internal apps through a single extensibility toolkit: define custom objects, fields, and views in Settings without code, or extend Twenty programmatically using the Apps framework. Developers can scaffold extensions with npx create-twenty-app and ship custom objects, server-side logic functions, React components rendered inside Twenty's UI, AI skills and agents, views, and navigation, all written in TypeScript.

Twenty ships with built-in AI chat, real-time live data, smart shortcuts, and a native MCP server so assistants like Claude, ChatGPT, and Cursor can read and write CRM data via OAuth. It supports migration from Salesforce or HubSpot via CSV or API (50,000+ records) and can be self-hosted for full infrastructure ownership or run on a managed cloud for a zero-ops setup.

Pricing includes a free self-hosted option, a 30-day Cloud trial, Cloud Pro at $9/user/month (billed yearly), and an Organization tier at $19/user/month that unlocks SSO and row-level permissions.