Important: no built-in enrichment
These CRMs store and organize contacts. None bundles Clay's waterfall of data providers, so you need separate enrichment tools or scripts.
Alternatives / Clay
5 open-source alternatives
5 Best Open Source Clay Alternatives in 2026
Looking for an open source Clay alternative? We compared 5 open source CRMs by license, self-hosting, AI features, and maintenance. They replace the place where contacts and deals live, but none provides Clay's data enrichment across dozens of providers.
Written by Maxime DERAME
Last updated:
Best Clay alternatives at a glance
| Alternative | Best for | License |
|---|---|---|
| Twenty | Modern CRM with MCP and workflows | AGPL-3.0 + commercial files |
| Frappe CRM | CRM with ERPNext and WhatsApp integration | AGPL-3.0 |
| EspoCRM | Mature, customizable CRM | AGPL-3.0 |
| Relaticle | CRM with AI chat and a 37-tool MCP server | AGPL-3.0 |
| Warpdrive | Lightweight pipeline CRM (small) | MIT |
How we chose these Clay alternatives
We looked for open-source tools that store and manage contacts, companies, and deals. We verified each project's license, recent activity, stars, and self-hosting in its repository. Clay is mostly an enrichment and outreach automation tool, so these are partial replacements. See our methodology for the full criteria.
Closest to Clay
Twenty is a modern CRM for technical teams with a customizable data model, no-code workflows, and REST, GraphQL, and MCP APIs. Relaticle is a self-hosted CRM with built-in AI chat and an MCP server with 37 tools, where you bring your own AI keys.
Other CRMs
Frappe CRM manages contacts, deals, and customer relationships with no per-user fees and integrates with ERPNext and WhatsApp. EspoCRM is a long-running CRM for contacts, companies, and opportunities, and Warpdrive is a small MIT Pipedrive-style tool for business development.
License details
Twenty is AGPL-3.0 with some commercial files. Frappe CRM, EspoCRM, and Relaticle are AGPL-3.0. Warpdrive is MIT.
Maintenance status
All except Warpdrive had commits within days of this update. Warpdrive is small with about 76 stars.
Why look for a Clay alternative?
Clay is a proprietary credit-based platform that enriches leads from many data vendors, so costs depend on credits and your lead data lives on its servers. Open-source CRMs keep customer data on your infrastructure and avoid per-seat pricing, but you must add your own enrichment providers.
twenty.com
Twenty is a CRM for technical teams with customizable data models, no-code workflows, and an MCP server, positioned as an alternative to Salesforce and HubSpot. It is mostly AGPL-3.0, with some files under a commercial license. It can be self-hosted or used as a managed cloud.
58.4K9.6KAGPL-3.0 + commercial filesSelf-hosted
Pricing: Free self-hosted; cloud from $9 per user per month.
- Custom data models and no-code workflows
- MCP server and AI support
- Large and active community
- Some files are under a commercial license
- Self-hosting requires maintenance
frappe.io
Frappe CRM manages contacts, deals, and customer relationships with email and call integration, customizable workflows, automation, reporting, and ERPNext integration, with no per-user pricing.
3.8K1.5KAGPL-3.0Self-hosted
Pricing: Free and open source; Frappe Cloud hosting is paid.
- Simple, modern interface
- Integrates with ERPNext
- Customizable workflows and automation
- Younger than the full ERPNext ecosystem
- AGPL-3.0 license
espocrm.com
EspoCRM manages contacts, companies, projects, and opportunities with sales pipelines, flexible deployment, customizable workflows, and an intuitive interface, either self-hosted or in the cloud.
3.5K1KAGPL-3.0Self-hosted
Pricing: Free self-hosted; paid cloud hosting and extensions.
- Mature and refined
- Flexible deployment and customization
- Active development
- Interface looks more traditional than Attio
- Some extensions are paid
relaticle.com
Relaticle is a self-hosted CRM with an AI chat assistant, an MCP server with 37 tools for external agents, custom fields, role-based permissions, a REST API, and voice input, with no per-seat pricing.
1.8K220AGPL-3.0Self-hosted
Pricing: Free and open source.
- Native AI assistant and 37 MCP tools
- Custom fields, roles, and REST API
- No per-seat pricing
- Young project
- AGPL-3.0 license
warpdrivecrm.com
Warpdrive is a self-hosted CRM for business development with a drag-and-drop pipeline board, a deal workspace combining activities and communications, contacts and organizations with custom fields, and two-way Gmail. It runs with Docker Compose on Next.js, TypeScript, and PostgreSQL, and deliberately excludes invoicing and workflow automation.
765MITSelf-hosted
Pricing: Free and open source.
- Focused pipeline and deal workspace
- Two-way Gmail with thread linking
- No per-seat fees, full data control
- Very small and new project
- No invoicing or workflow automation
Compare Clay alternatives
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| Twenty | CRM | AGPL-3.0 + commercial files | Yes | Technical teams |
| Frappe CRM | CRM | AGPL-3.0 | Yes | Frappe users |
| EspoCRM | CRM | AGPL-3.0 | Yes | General CRM |
| Relaticle | CRM | AGPL-3.0 | Yes | AI-assisted CRM |
| Warpdrive | CRM | MIT | Yes | Small sales teams |
Which one should you choose?
Want the closest modern CRM
Twenty has a customizable data model, workflows, and MCP, with some files under a commercial license.
Want AI agents to drive the CRM
Relaticle exposes 37 MCP tools to external agents and has built-in AI chat.
Want a long-established CRM
EspoCRM has over a decade of development and runs cloud or self-hosted.