Open Source AI Chat Interfaces
A curated collection of the best open source user interfaces for chatting with various AI models..
Structured control layer for customer-facing AI agents
Stars
18,329Last commit
2 days agoLicense
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:
Private AI chat with zero-access encryption
Stars
5,685Last commit
9 hours agoLicense
GPL-3.0
AI chat assistant from Proton that stores conversations with zero-access encryption, never logs chats, and never uses your data to train models.
Open Source Alternative to:
One interface for every AI model you run or connect
Stars
158,266Last commit
6 hours agoLicense
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:
Chat with your documents using any LLM, fully private
Stars
68,131Last commit
14 hours agoLicense
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
53,388Last commit
5 hours agoLicense
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
Stars growing over the last 30 days46,921Last commit
6 hours agoLicense
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:
Run AI models locally or connect to cloud, privately
Stars
45,646Last commit
6 hours agoLicense
Apache-2.0
Jan runs open-source AI models on your own hardware or connects to cloud providers like OpenAI, Anthropic, and Google, keeping your conversations off third-party servers.
Open Source Alternative to:
Build AI copilots for your product in hours, not months
Stars
38,588Last commit
6 hours agoLicense
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
10,616Last commit
3 days agoLicense
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
9,311Last commit
1 day agoLicense
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:
Smart desktop AI assistant with powerful local knowledge features
Stars
5,370Last commit
5 days agoLicense
Unknown
Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.
Open Source Alternative to:
Chat with private and local large language models
Stars
2,271Last commit
2 years agoLicense
MIT
A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.
Open Source Alternative to:
AI chat companion with versatile model support
Stars
1,541Last commit
11 months agoLicense
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:
Bright Data – Web data for AI agents and apps. Built-in unblocking, proxies, and ready-made APIs.
Bright Data
InfluxDB