Open-source CRM Sales tools

The best open-source CRM Sales tools, curated: 7 in the registry, including Atomic CRM, ERPNext, Ever Gauzy. Every tool is open-source; each entry lists license, self-hostability, and links.

7 tools · ← all categories · JSON

• Atomic CRM — tool, 2026-09-03
  OSS alt to Attio; ~1192 stars; via openalternative.co
• ERPNext — tool, 2026-09-03
  OSS alt to SAP/NetSuite; ~37793 stars; broad ERP; CRM is one module; via ossinsight.io
• Ever Gauzy — tool, 2026-09-03
  OSS alt to Attio; ~4305 stars; via openalternative.co
• Frappe CRM — tool, 2026-09-03
  OSS alt to Attio; ~3206 stars; via openalternative.co
• Open Mercato — tool, 2026-09-03
  OSS alt to SAP; ~1580 stars; via openalternative.co
• Relaticle — tool, 2026-09-03
  OSS alt to Attio; ~1494 stars; via openalternative.co
• Twenty — tool, 2026-08-29
  Open-source, self-hostable CRM and system-of-record — an OSS alternative to Salesforce/HubSpot with a REST/GraphQL API to persist records. Core is AGPL-3.0; SDKs MIT; some features gated behind a paid Enterprise license.