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Atomic CRM — a React and Supabase CRM designed for deep customization

OSS scale score 191.9OSS health 79Update pace 23 commits/30d
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Stars
1,262
Primary language
TypeScript
License
MIT
Repository last updated
Sep 17, 2026

Overview

Atomic CRM is an open-source CRM for contacts, tasks and reminders, notes, email capture, deal pipelines, and activity history. Built with React, React Admin-style components, shadcn UI, and Supabase, it is designed for developers to customize fields, themes, components, authentication, and integrations.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Connect contacts, tasks, notes, and deals through activity history

Customer records, follow-up tasks, notes, captured email, and sales opportunities are combined into Kanban pipelines and activity timelines.

Sources: [2]

Customize workflows through the React/Supabase architecture

Teams can replace UI components, add fields, change themes, adjust authentication, and extend data/API integrations in code.

Sources: [2][4]

For teams that prefer adapting open-source CRM code to their workflow

Atomic CRM fits smaller sales and relationship-management teams that want to evolve the CRM alongside their own processes rather than conforming entirely to a SaaS product.

Sources: [2]

Separate the FakeRest demo from the Supabase production architecture

Demo mode uses FakeRest and resets data on reload. Production deployment requires Supabase schema, authentication, email configuration, backups, and other operational decisions.

Sources: [4]

Official sources

  1. [1]marmelab/atomic-crm repository(2026-09-20)
  2. [2]Atomic CRM README(2026-09-20)
  3. [3]Atomic CRM MIT license(2026-09-20)
  4. [4]Atomic CRM documentation(2026-09-20)
Supplemental curator note

Atomic CRM emphasizes developer customization rather than only providing a fixed CRM. Teams can change fields, themes, components, and data behavior with React and SQL skills. Production uses Supabase, while `npm run dev:demo` provides a FakeRest, auto-authenticated demo without Supabase.

Try it in 3 steps

  1. 1

    Clone Atomic CRM

    Fetch the source and install frontend dependencies.

    git clone https://github.com/marmelab/atomic-crm.git && cd atomic-crm && npm install
  2. 2

    Start demo mode without Supabase

    Run the FakeRest, auto-authenticated demo configuration.

    npm run dev:demo
  3. 3

    Explore the CRM UI

    Try contacts, tasks, the deal Kanban, and activity history. Demo data resets on reload.

    Open http://127.0.0.1:5173/
Check the official README

Growth

Growth trends · Last 30 days

1,262 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
23
Open PRs
14

Development activity is still being collected.

Built with

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GitHub data

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GitHub Topics

  • crm
  • react
  • react-admin
  • supabase
  • react-hook-form
  • react-query
  • react-router
  • shadcn-ui
Stars
1,262
Forks
815
Watchers
10
Open issues
3
Contributors
19
Primary language
TypeScript
License
MIT
Repository last updated
Sep 17, 2026
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