Atomic CRM
A free, open-source, self-hostable CRM built with React, shadcn/ui, and Supabase by Marmelab (makers of React-Admin), also available as a small paid hosted service.
🔗 Visit Atomic CRM
Description
A lot of small teams don't need a heavyweight CRM with hundreds of unused features — they need contacts, a deal pipeline, notes, and reminders, without a steep learning curve or a per-seat bill that scales out of control. Atomic CRM is exactly that: a clean, modern CRM you can either run yourself for free, or run as a small paid hosted service if you'd rather not manage a server.
Atomic CRM is an open-source CRM built on React, shadcn/ui (via react-admin/shadcn-admin-kit), and Supabase, published by Marmelab, the French agency behind the widely used React-Admin framework. It covers standard CRM ground — contact management, task creation with reminders, notes, email-to-note capture, a Kanban-style deal pipeline, data import/export — plus developer-oriented extras: a REST API, an MCP server for AI-agent integration, SSO via Google/Azure/Keycloak/Auth0, and a mobile app. It's MIT-licensed, self-hostable (Docker supported) with over 1,200 GitHub stars and active development (1,600+ commits), and also ships as a small hosted commercial service — Starter at €25/month for 1,000 contacts, Team at €50/month for 10,000 contacts, and custom Enterprise pricing — for teams that want the same product without running their own Supabase instance.
💬 Our review
The short version: Atomic CRM is a strong pick if you want a CRM that's genuinely simple to self-host and modify, backed by a team (Marmelab) with a real track record building admin/CRM tooling rather than a first-time side project.
The differentiator versus more established open-source CRMs like Twenty or EspoCRM isn't feature breadth — it's architecture and developer experience: it's built on modern, widely-known tools (React, shadcn/ui, Supabase, TanStack Query) rather than a legacy PHP stack, which matters if your team wants to actually customize the code rather than just configure the UI. The MCP server for AI-agent integration is also a forward-looking touch few CRM competitors at this size offer yet.
The honest limits: at 1,200+ stars it's smaller and newer than Twenty (45,500+ stars) or the long-established EspoCRM, so the plugin/integration ecosystem and battle-testing at scale are thinner. For a small team comfortable with a modern JS stack who wants to self-host and customize, it's a genuinely good option; for a team wanting the largest possible open-source CRM community and integration marketplace, Twenty CRM currently has more scale behind it.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Auto-hébergé gratuit et open-source (MIT) ; service hébergé payant en option : Starter 25€/mois (1000 contacts), Team 50€/mois (10 000 contacts), Enterprise sur devis.
Pros
Stack moderne (React, shadcn/ui, Supabase) — facile à personnaliser pour une équipe dev
Gratuit et open-source (MIT), auto-hébergeable via Docker
Serveur MCP pour intégration agents IA — rare chez les CRM concurrents
Développé par Marmelab, équipe expérimentée (créateurs de React-Admin)
Cons
Communauté plus petite (1 200+ stars) que Twenty CRM (45 500+) ou EspoCRM (plus ancien)
Écosystème d'intégrations plus réduit qu'un CRM établi
Service hébergé payant encore jeune, moins éprouvé qu'une offre SaaS mature