## Startup showcase (1-1 of 1)

### Twenty
The open-source CRM, an alternative to Salesforce

59,952 GitHub stars (twentyhq/twenty, AGPL-3.0, 2026-10-28)

Website · Sales · by Twenty · launched 2022-12-01. https://twenty.com

- Frontend: React
- Backend: NestJS, GraphQL, BullMQ
- Database: PostgreSQL, Redis
- Analytics: ClickHouse
- Payments: Stripe (`stripe`, priced)
- AI: OpenAI API (`openai`, priced), Anthropic (Claude API) (`anthropic`, priced), Google Gemini API (`google-gemini`, priced)
- Email: Amazon SES (`amazon-ses`, priced)
- Monitoring: Sentry (`sentry`, priced)

Most used: Amazon SES (1), Anthropic (Claude API) (1), BullMQ (1), ClickHouse (1), Google Gemini API (1), GraphQL (1), NestJS (1), OpenAI API (1), PostgreSQL (1), React (1), Redis (1), Sentry (1).

**Caveats (show these word for word)**
- Stacks are read from each product's public code (manifests and environment templates) on the date shown; a service listed there may be optional or used only by the hosted version. GitHub and App Store figures are as read on their checked_at date.

Confidence: medium.

Use estimate_cost or audit_stack with the priced vendor ids to see what a stack like this costs.