Open Source CRM Systems using CSS
A curated collection of the best open source customer relationship management systems for tracking contacts, deals, and pipelines, with activity history and sales reporting. using CSS.
An agentic CRM that keeps records current automatically
Stars
Stars growing over the last 30 days11,532Last commit
1 month agoLicense
MIT
Open source CRM with AI agents that read your inbox, enrich contacts and companies, schedule follow-ups, and build new agents from plain-language descriptions.
Open Source Alternative to:
A self-building CRM powered by your email
Stars
Stars growing over the last 30 days4,771Last commit
8 hours agoLicense
AGPL-3.0
Automatically creates and enriches contacts, companies, and deal threads from your team's email. No data entry, no imports, no admin overhead.
Open Source Alternative to:
All-in-one business platform covering ERP, CRM, and more
Stars
55,171Last commit
6 hours agoLicense
Unknown
Integrated suite of business apps covering accounting, CRM, inventory, eCommerce, HR, and project management, available free as Community or paid Enterprise edition.
Open Source Alternative to:
Build a custom CRM without the proprietary lock-in
Stars
58,652Last commit
6 hours agoLicense
AGPL-3.0
Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.
Open Source Alternative to:
Self-hosted CRM for enhanced business relationships
Stars
24,029Last commit
4 days agoLicense
MIT
Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.
Open Source Alternative to:
Comprehensive open-source business management platform
Stars
Stars growing over the last 30 days8,405Last commit
9 hours agoLicense
AGPL-3.0
All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations
Open Source Alternative to:
Open-source CRM that puts simplicity and control first
Stars
Stars growing over the last 30 days3,827Last commit
6 hours agoLicense
AGPL-3.0
A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.
Open Source Alternative to:
Open-source growth platform for customer-centric teams
Stars
4,092Last commit
6 hours agoLicense
AGPL-3.0
All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.
Open Source Alternative to:
Complete customer relationship management made simple
Stars
Stars growing over the last 30 days3,498Last commit
1 day agoLicense
AGPL-3.0
Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.
Open Source Alternative to:
AI-native CRM/ERP foundation with 80% already built
Stars
Stars growing over the last 30 days1,870Last commit
6 hours agoLicense
MIT
A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.
Open Source Alternative to:
Self-hosted CRM with built-in AI chat and agent tools
Stars
Stars growing over the last 30 days1,773Last commit
15 hours agoLicense
AGPL-3.0
Open-source CRM with a built-in AI assistant, 37 MCP tools for external agents, custom fields, role-based permissions, and a REST API. No per-seat pricing.
Open Source Alternative to:
Self-hosted CRM for business development teams
Stars
76Last commit
18 days agoLicense
MIT
Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.
Open Source Alternative to:
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
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