Best Open Source Alternatives to Claude

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

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

Claude

Proprietary SaaS

PricingFreemium

Platformsweb, mobile

WebsiteVisit site

Claude alternatives compared

Open-source alternatives to Claude, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Ollama	177,528	MIT	macOSLinuxWindows	No	Jul 2026	Visit
Open WebUI	147,557	MIT	LinuxDocker	Yes	Aug 2026	Visit
LibreChat	41,528	MIT	LinuxDockerWeb	Yes	Aug 2026	Visit

Top open-source Claude alternatives

Ollama177,528MIT

Run large language models locally.

macOSLinuxWindows

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

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Open WebUI147,557MIT

User-friendly WebUI for LLMs, supporting Ollama.

LinuxDocker

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

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LibreChat41,528MIT

Every AI model in one chat interface.

LinuxDockerWeb

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

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