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Open Source AI Chat Interfaces using OpenAI

A curated collection of the best open source user interfaces for chatting with various AI models. using OpenAI.

Structured control layer for customer-facing AI agents
  • Stars


    18,263
  • Last commit


    1 month ago
  • License


    Apache-2.0
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.

Open Source Alternative to:

One interface for every AI model you run or connect
  • Stars


    149,663
  • Last commit


    10 hours ago
  • License


    BSD-3-Clause
Self-hosted AI platform that connects local and cloud models, extends with Python, and keeps your data under your control.

Open Source Alternative to:

Manage, build, and run AI agent teams around the clock
  • Stars


    81,949
  • Last commit


    10 hours ago
  • License


    Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.

Open Source Alternative to:

Chat with your documents using any LLM, fully private
  • Stars


    65,104
  • Last commit


    2 days ago
  • License


    MIT
A desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.

Open Source Alternative to:

Multi-model AI desktop client with local-first privacy
  • Stars


    50,952
  • Last commit


    10 hours ago
  • License


    AGPL-3.0
Desktop AI client for Windows, macOS, and Linux that connects 300+ models from 50+ providers, with local storage, a built-in knowledge base, and autonomous agent mode.

Open Source Alternative to:

One interface for all your AI models and conversations
  • Stars


    42,361
  • Last commit


    10 hours ago
  • License


    MIT
Chat with multiple AI providers through a single self-hostable interface, with support for custom agents, file uploads, plugins, and multi-user access control.

Open Source Alternative to:

Build AI copilots for your product in hours, not months
  • Stars


    36,979
  • Last commit


    20 hours ago
  • License


    MIT
Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

Open Source Alternative to:

Create powerful chatbots without coding
  • Stars


    10,280
  • Last commit


    2 days ago
  • License


    Unknown
Design, build, and deploy interactive chatbots with a visual editor. Integrate easily and collect data effortlessly.

Open Source Alternative to:

AI-powered answer engine with dynamic interface generation
  • Stars


    9,058
  • Last commit


    2 days ago
  • License


    Apache-2.0
Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.

Open Source Alternative to:

AI chat companion with versatile model support
  • Stars


    1,532
  • Last commit


    9 months ago
  • License


    Apache-2.0
Open-source chat application that lets you interact with multiple AI models in one interface, offering flexible conversations and diverse capabilities.

Open Source Alternative to:

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