Best Open Source AI Chat Interfaces using Radix UI in 2026

Parlant

Build compliant customer-facing AI agents with control

Stars
18,055
Forks
1,529
Last commit
12 hours ago

Conversational AI engine that keeps agents business-aligned and compliant as you scale. Build adaptive agents through feedback-driven development.

Open Source Alternative to:

Voiceflow

Jan

Your AI-powered local assistant for seamless productivity

Stars
42,385
Forks
2,841
Last commit
1 day ago

A powerful, open-source AI chat interface that runs locally, offering privacy, customization, and seamless integration with your workflow.

Open Source Alternative to:

Grok

LibreChat

Free AI chat platform for Everyone

Stars
36,586
Forks
7,494
Last commit
10 hours ago

Free, open source AI chat platform compatible with any AI provider. Offers a wide range of features, including agents, code interpreter, and multimodal capabilities.

Open Source Alternative to:

Grok

CopilotKit

Build AI copilots for your product in hours, not months

Stars
30,619
Forks
3,951
Last commit
10 hours ago

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

Open Source Alternative to:

LangChain

Morphic

AI-powered answer engine with dynamic interface generation

Stars
8,815
Forks
2,337
Last commit
4 days ago

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

Open Source Alternative to:

Claude

Zola

AI chat companion with versatile model support

Stars
1,498
Forks
298
Last commit
5 months ago

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:

Grok

LLMChat

Advanced AI research platform with agentic workflows

Stars
1,063
Forks
203
Last commit
1 year ago

Privacy-focused open-source platform offering deep research capabilities, multi-model support, and customizable AI workflows for enhanced productivity.

Open Source Alternative to:

Grok

VT Chat

A production-ready, privacy-focused AI chat application

Stars
47
Forks
11
Last commit
11 days ago

A production-ready, privacy-focused AI chat application delivering AI capabilities through a dual-tier subscription system. Built with modern web technologies and a privacy-first architecture.

Open Source Alternative to:

Grok

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Parlant

Build compliant customer-facing AI agents with control

Stars
18,055
Forks
1,529
Last commit
12 hours ago

Conversational AI engine that keeps agents business-aligned and compliant as you scale. Build adaptive agents through feedback-driven development.

Open Source Alternative to:

Voiceflow

Jan

Your AI-powered local assistant for seamless productivity

Stars
42,385
Forks
2,841
Last commit
1 day ago

A powerful, open-source AI chat interface that runs locally, offering privacy, customization, and seamless integration with your workflow.

Open Source Alternative to:

Grok

LibreChat

Free AI chat platform for Everyone

Stars
36,586
Forks
7,494
Last commit
10 hours ago

Free, open source AI chat platform compatible with any AI provider. Offers a wide range of features, including agents, code interpreter, and multimodal capabilities.

Open Source Alternative to:

Grok

CopilotKit

Build AI copilots for your product in hours, not months

Stars
30,619
Forks
3,951
Last commit
10 hours ago

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

Open Source Alternative to:

LangChain

Morphic

AI-powered answer engine with dynamic interface generation

Stars
8,815
Forks
2,337
Last commit
4 days ago

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

Open Source Alternative to:

Claude

Zola

AI chat companion with versatile model support

Stars
1,498
Forks
298
Last commit
5 months ago

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:

Grok

LLMChat

Advanced AI research platform with agentic workflows

Stars
1,063
Forks
203
Last commit
1 year ago

Privacy-focused open-source platform offering deep research capabilities, multi-model support, and customizable AI workflows for enhanced productivity.

Open Source Alternative to:

Grok

VT Chat

A production-ready, privacy-focused AI chat application

Stars
47
Forks
11
Last commit
11 days ago

A production-ready, privacy-focused AI chat application delivering AI capabilities through a dual-tier subscription system. Built with modern web technologies and a privacy-first architecture.

Open Source Alternative to:

Grok

Open Source AI Chat Interfaces using Radix UI

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