Twenty · Open-Source CRM

Twenty

Self-hostable CRM built on TypeScript and React with a NestJS, PostgreSQL and Redis backend in an Nx monorepo, positioned squarely against Salesforce. CRM objects, views and workflows are exposed as version-controllable configuration, with a CLI for building custom apps on top of the CRM and agent and chat features bundled in. 55.9k stars and 8.8k forks; mostly AGPLv3, with the SDK and UI library under MIT and an enterprise licence on files marked accordingly.