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Best / LLM chat UI

Best open-source LLM chat UI

The best open-source LLM chat UI in the c17.io catalog is Open WebUI, with LiteLLM as the proxy, Anything LLM and Onyx for RAG chat, and WeKnora, SurfSense, or DocsGPT when the job is documents rather than a ChatGPT clone. c17 publishes a one-click Railway template for Open WebUI + LiteLLM.

Open the stackDeploy on Railway

Ranked picks

  1. 1

    Open Webui

    Self-hosted ChatGPT-style UI — the c17 ChatGPT Team stack, with a Railway template.

    When to pick it: One UI over many models you bring keys for.

    155,599 stars in the catalog

  2. 2

    LiteLLM

    Unified proxy over OpenAI, Anthropic, and local models on the same stack.

    When to pick it: An OpenAI-compatible gateway you host.

  3. 3

    Anything LLM

    Catalog LLM app for chatting with documents.

    When to pick it: A desktop/self-host RAG chat if Open WebUI is not the shape.

  4. 4

    onyx

    MIT-community AI chat and enterprise search over your docs.

    When to pick it: Help-center answers; skip ee/ if you want OSS-only.

  5. 5

    WeKnora

    Open-source LLM knowledge platform: documents to RAG.

    When to pick it: A knowledge bot, not a general ChatGPT clone.

    33,834 stars in the catalog

  6. 6

    DocsGPT

    MIT private AI platform for agents and enterprise search.

    When to pick it: Docs Q&A with agents.

    18,318 stars in the catalog

  7. 7

    SurfSense

    NotebookLM-shaped research UI you can self-host.

    When to pick it: Source-backed research, not seat-based ChatGPT Team.

How they compare

ToolLicenseSelf-hostBest for
Open WebuiOtherEasyOne UI over many models you bring keys for.
LiteLLMNot listedEasyAn OpenAI-compatible gateway you host.
Anything LLMNot listedEasyA desktop/self-host RAG chat if Open WebUI is not the shape.
onyxMIT (community); Onyx Enterprise License (ee directories)MediumHelp-center answers; skip ee/ if you want OSS-only.
WeKnoraOtherMediumA knowledge bot, not a general ChatGPT clone.
DocsGPTMIT LicenseMediumDocs Q&A with agents.
SurfSenseApache-2.0 (core); BUSL-1.1 (proprietary directory)MediumSource-backed research, not seat-based ChatGPT Team.

Related pages

FAQ

Open WebUI or Anything LLM?
Open WebUI is the published ChatGPT Team replacement (one UI, LiteLLM proxy). Anything LLM if you want a document-chat product instead.
Do I still pay OpenAI?
You still pay tokens to whoever you route. LiteLLM is the proxy; it is not free model inference. That is the stack copy.
Are these free?
UIs are open source or fair-code as listed; hosting and model APIs are extra. Template users never pay c17.
How do I deploy it?
Use Deploy on Railway on /stacks/open-webui-litellm. Provider keys are BYO and optional — the stack boots without them.

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