twenty

Twenty is a full-blown CRM built to replace Salesforce. Not a toy. Not a contact list with delusions of grandeur. It handles custom objects, kanban views, email integration, calendar sync, workflow automation, and role-based permissions. The UI borrows from Notion and Linear: clean, fast, modern.

Self-hosting runs on Docker with Postgres and Redis. The community is massive and active. You get custom fields, API access, and webhooks on every tier. The AGPL license means the core stays open. Enterprise features like SSO sit behind a commercial license. At $9/user/month for cloud, the open source tax on ops might make the hosted version the smarter call anyway. Alternatives like SuiteCRM and EspoCRM exist but feel dated by comparison. Twenty looks and feels like a product built in 2025, not 2005.

The catch: self-hosting requires Postgres plus Redis plus the app server. That is not a weekend project for a solo founder.