57 Best Open-Source Enterprise Agent Platforms in 2026 (Ranked by GitHub Activity)

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

Open-source LLM engineering platform for observability, evaluation, prompt and dataset management

Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.

The agent engineering platform

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Production-ready platform for agentic workflow development.

Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.

Build resilient language agents as graphs.

The platform for LLM evaluations and AI agent testing

Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.

The open-source LLMOps platform: prompt playground, prompt management, LLM evaluation, and LLM observability all in one place.

Python tool for converting files and office documents to Markdown.

Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

The open-source AI Management System

Open-source Java library with unified APIs for integrating LLMs and vector databases into applications

Open-source, secure environment with real-world tools for enterprise-grade agents.

Open Source AI Platform - AI Chat with advanced features that works with every LLM

Custom AI agent platform to speed up your work.

LlamaIndex is the leading document agent and OCR platform

AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework

ToolHive is an enterprise-grade platform for running and managing Model Context Protocol (MCP) servers.

Private AI platform for agents, assistants and enterprise search. Built-in Agent Builder, Deep research, Document analysis, Multi-model support, and API connectivity for agents.

The agent engineering platform

Open-source AI knowledge base and MCP/A2A management platform with admin UI, user management, and SSO

Integrate cutting-edge LLM technology quickly and easily into your apps

Open-source platform for AI agent tracing, evaluations, guardrails, prompts, and GPU monitoring

Open-source ETL for converting documents into structured data for language models

Open LLM application DevOps platform for enterprise workflows, RAG, and agents

🔥 MaxKB is an open-source platform for building enterprise-grade agents.

FinRobot: An Open-Source AI Agent Platform for Financial Analysis using LLMs 🚀 🚀 🚀

The Enterprise-Grade Production-Ready Multi-Agent Orchestration Framework. Website: https://swarms.ai

Letta is the platform for building stateful agents: AI with advanced memory that can learn and self-improve over time.

Browser extension and cross-platform desktop application for translation based on ChatGPT API.

The unified workspace where open-source models get things done for you.

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

🧙‍AutoDev: the AI-native Multi-Agent development platform built on Kotlin Multiplatform, covering all 7 phases of SDLC.

Desktop multi-agent harness with visual workflows, built with Rust, Tauri, React, and langgraph-rust

Unified framework for building enterprise RAG pipelines with small, specialized models

TensorZero is an open-source LLMOps platform that unifies an LLM gateway, observability, evaluation, optimization, and experimentation.

Open-source, local-first workspace for enterprises to assemble AI agents, apps, and integrations

🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.

AI agent automation platform for natural-language workflows across multiple AI providers and services

[COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild

An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.

The easiest way to use Agentic RAG in any enterprise

A versatile workflow automation platform to create, organize, and execute AI workflows, from a single LLM to complex AI-driven workflows.

The open source platform for AI-native application development.

Open-source platform to evaluate and improve generative AI applications with 20+ preconfigured evaluations

The no-code platform for building custom LLM Agents

Ready-to-deploy templates for RAG and enterprise search that sync with live data sources

The first AI Agent Server, Eidolon is a pluggable Agent SDK and enterprise ready, deployment server for Agentic applications

LangStream. Event-Driven Developer Platform for Building and Running LLM AI Apps. Powered by Kubernetes and Kafka.

An LLM-powered autonomous agent platform

Headless LLM chatbot platform built on Rasa and LangChain for indexing, retrieval, and context injection

Autonomous GPT-4 agent platform

Open-source sample for chatting with uploaded enterprise data using Azure OpenAI and vector search

CLI platform to experiment with codegen. Precursor to: https://lovable.dev