Best Open Source Alternatives to Attio

Compare the best free and open-source alternatives to Attio — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 3 alternatives

Attio

Proprietary SaaS

Attio alternatives compared

Open-source alternatives to Attio, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Frappe CRM	3,905	AGPL-3.0	DockerLinux	Yes	Nov 2026	Visit
Relaticle	1,805	AGPL-3.0	Web	No	Nov 2026	Visit
Atomic CRM	1,424	MIT	Web	No	Nov 2026	Visit

Top open-source Attio alternatives

Frappe CRM3,905AGPL-3.0

Frappe CRM is an open-source alternative to HubSpot that eliminates per-seat fees with self-hosted deal pipelines, telephony logs, and ERPNext integration.

DockerLinux

vs Attio: a free, open-source option you fully control, licensed AGPL-3.0.

Visit

Edgar Sipki

Go & gRPC engineer · founder of EasyP

Promoted

Mentoring for backend developers. Consulting for startups.

Go, gRPC and Protobuf done right, LLM agents in production, and the hard parts of shipping a first product.

GogRPCProtobufLLM agents

sipki.online

Speaker at HighLoad++, GolangConf, AI Conf, DevOpsConf
Helped launch 7+ startups
Maintainer of EasyP, the open-source Protobuf toolkit

Relaticle1,805AGPL-3.0

Relaticle is a self-hosted CRM alternative to HubSpot and Attio featuring native Model Context Protocol tools and human-in-the-loop AI write approvals.

Web

vs Attio: a free, open-source option you fully control, licensed AGPL-3.0.

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Atomic CRM1,424MIT

Atomic CRM is an open-source alternative to HubSpot that pairs a React sales interface with Supabase and Postgres for complete data and pipeline control.

Web

vs Attio: a free, open-source option you fully control, licensed MIT.

Visit Details