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6 Best Open Source Clay Alternatives

A curated collection of the 6 best open source and self-hosted alternatives to Clay in 2026.

Looking for a free, privacy-friendly, or self-hosted replacement for Clay in 2026? The top open-source alternative is Twenty — Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling..

Other highly rated open-source Clay alternatives include ERPNext, Frappe CRM and Ever Gauzy.

55,656

Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.

Twenty preview

Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.

38,560

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

ERPNext preview

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

3,403

A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.

Frappe CRM preview

A flexible and customizable CRM platform for managing contacts, deals, and customer relationships without the complexity or user-based pricing of traditional solutions.

4,349

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

Ever Gauzy preview

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

3,299

Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.

EspoCRM preview

Open-source CRM software for managing customers, companies, projects and opportunities. Intuitive interface with cloud and self-hosted options available.

73

Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.

Warpdrive preview

Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.

About Clay

A beautiful rolodex and CRM for iPhone, Mac, Windows, and web, built automatically to help you manage your personal and professional relationships.