Best Open Source AI Agent Platforms 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

Langflow

Visual builder for AI-powered applications and workflows

Stars
147,715
Forks
8,906
Last commit
9 hours ago

Low-code platform for building agentic and RAG applications with drag-and-drop components, Python customization, and support for any LLM or vector database.

Open Source Alternative to:

Voiceflow

LibreChat

Free AI chat platform for Everyone

Stars
36,586
Forks
7,494
Last commit
9 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
9 hours ago

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

Open Source Alternative to:

LangChain

Suna

AI agent that autonomously handles real-world tasks

Stars
19,705
Forks
3,405
Last commit
9 hours ago

Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.

Open Source Alternative to:

Manus

E2B

Secure cloud environments for enterprise AI agents

Stars
12,063
Forks
888
Last commit
1 day ago

Provide AI agents with secure, isolated sandboxes featuring real-world tools, code execution, and enterprise-grade security. Trusted by 88% of Fortune 100 companies.

Open Source Alternative to:

Modal

Nango

Build product integrations with 500+ APIs in hours

Stars
7,273
Forks
712
Last commit
9 hours ago

Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.

Open Source Alternative to:

Pipedream

Rivet

Build stateful backends with in-memory actors

Stars
5,500
Forks
182
Last commit
9 hours ago

Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Cloudflare Workers

ACI.dev

Build reliable AI agents with unified tool integration

Stars
4,764
Forks
455
Last commit
12 days ago

Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Pipedream

ByteChef

Build AI agents and automate complex workflows seamlessly

Stars
754
Forks
137
Last commit
11 hours ago

Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

Open Source Alternative to:

n8n

Giselle

Build and deploy AI agents through visual workflows

Stars
522
Forks
124
Last commit
5 days ago

Create powerful AI agents using an intuitive node-based interface that connects multiple LLMs and data sources for automated documentation and development workflows.

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

Langflow

Visual builder for AI-powered applications and workflows

Stars
147,715
Forks
8,906
Last commit
9 hours ago

Low-code platform for building agentic and RAG applications with drag-and-drop components, Python customization, and support for any LLM or vector database.

Open Source Alternative to:

Voiceflow

LibreChat

Free AI chat platform for Everyone

Stars
36,586
Forks
7,494
Last commit
9 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
9 hours ago

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

Open Source Alternative to:

LangChain

Suna

AI agent that autonomously handles real-world tasks

Stars
19,705
Forks
3,405
Last commit
9 hours ago

Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.

Open Source Alternative to:

Manus

E2B

Secure cloud environments for enterprise AI agents

Stars
12,063
Forks
888
Last commit
1 day ago

Provide AI agents with secure, isolated sandboxes featuring real-world tools, code execution, and enterprise-grade security. Trusted by 88% of Fortune 100 companies.

Open Source Alternative to:

Modal

Nango

Build product integrations with 500+ APIs in hours

Stars
7,273
Forks
712
Last commit
9 hours ago

Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.

Open Source Alternative to:

Pipedream

Rivet

Build stateful backends with in-memory actors

Stars
5,500
Forks
182
Last commit
9 hours ago

Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.

Open Source Alternative to:

Cloudflare Workers

ACI.dev

Build reliable AI agents with unified tool integration

Stars
4,764
Forks
455
Last commit
12 days ago

Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Pipedream

ByteChef

Build AI agents and automate complex workflows seamlessly

Stars
754
Forks
137
Last commit
11 hours ago

Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

Open Source Alternative to:

n8n

Giselle

Build and deploy AI agents through visual workflows

Stars
522
Forks
124
Last commit
5 days ago

Create powerful AI agents using an intuitive node-based interface that connects multiple LLMs and data sources for automated documentation and development workflows.

Open Source AI Agent Platforms using Radix UI

A curated collection of the best open source platforms for creating and managing autonomous AI agents. using Radix UI.