Twenty is an open-source CRM platform built as a Salesforce alternative, featuring a modern tech stack with React, GraphQL, and NestJS. Developers can use it to manage customer relationships, sales pipelines, and marketing workflows, or contribute to an actively maintained codebase organized as a monorepo with good opportunities for open-source contributions. The platform is designed with AI capabilities in mind and uses PostgreSQL for data storage, making it suitable for teams looking for a customizable, self-hosted CRM solution.

110 open issues · last updated Jul 21, 2026