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Apache-2.0freeRuns locallyAI Chat & Agents

Jan: Open-Source Offline ChatGPT-Class App

Apache-2.0 desktop app that runs chat models 100% offline on your computer.

Jan official Open Graph artwork used to identify the offline desktop chat app
Official project image. Source · License: Jan product image.
License
Apache-2.0
Stars
45,014 (2026-10-19)
Platforms
macOS, Windows, Linux
First seen
2023-08-17

TL;DR. Jan is Apache-2.0 desktop app that runs chat models 100% offline on your computer. License: Apache-2.0 (verified). Platforms: macOS, Windows, Linux. Price: free. Runs locally: yes. It is an alternative to ChatGPT.

NameJan
LanguageRust
LicenseApache-2.0
Pricingfree
PlatformsmacOS, Windows, Linux
Runs locallyYes
Stats45,014 stars · 3,103 forks (as of 2026-10-19)
First seen2023-08-17
Repositoryhttps://github.com/janhq/jan

Jan is an Apache-2.0 offline desktop chat app. Official hosts we opened on 2026-10-19: janhq/jan (45,014 stars, last push 2026-10-19), jan.ai. The README calls it an open-source ChatGPT alternative that runs 100% offline — that is an upstream label, not a forkalt bake-off.

It hangs off ChatGPT alternatives. Also Open WebUI, LibreChat. Serving engines: vLLM, DeepInfer (DeepInfer vs vLLM).

FAQ

Is Jan an open-source ChatGPT alternative?

The GitHub description says it is an open-source ChatGPT alternative that runs 100% offline. 45,014 stars, Apache-2.0, pushed 2026-10-19. We have no quality ranking.

Desktop vs Open WebUI?

Jan is a desktop app. Open WebUI is typically Docker/self-hosted web. See Open WebUI vs ChatGPT.

License?

Apache-2.0 LICENSE file (2026-10-19). Not legal advice.

Sources & verification

Last verified 2026-10-19 · Last updated 2026-10-19· Edited by forkalt editors · Editorial policy

License notes are not legal advice. Read the original LICENSE. Trademark & disclaimer.