Twenty is a modern open-source CRM, presented as an alternative to Salesforce and HubSpot. Rather than imposing a rigid, monolithic software, it provides the building blocks of a CRM — objects, views, workspaces, and workflow automations — which teams can assemble and extend according to their own needs, without proprietary lock-in.

The project is resolutely developer-oriented: React interface, NestJS backend with GraphQL API, and runtime data model customization. Technical organizations can thus compose their CRM and internal applications in TypeScript, relying on ready-to-use components (data models, permissions, authentication, workflow engine) instead of rebuilding everything from scratch.

Twenty can be self-hosted or used as a managed cloud service, making it a relevant choice for teams that want to control their customer data and significantly reduce costs compared to proprietary platforms. It is particularly suitable for businesses with evolving needs who want to iterate quickly without migration friction.