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Best Agent Frameworks in 2026

115 agent frameworks ranked by community signals — GitHub stars, contributor count, commit activity, and trending status. Updated May 2026.

1

LangChain

Build context-aware reasoning applications with LLMs

OSS137.4K stars
137.4K850.0K/wtoday469
2

AutoGen

Microsoft's framework for building multi-agent AI systems

OSS58.3K stars
58.3K5w ago445
3

CrewAI

Multi-agent orchestration framework for collaborative AI workflows

OSS51.9K stars
51.9Ktoday297

All Agent Frameworks by Ranking

4
M

Microsoft Agent Framework

Unified multi-agent framework merging AutoGen and Semantic Kernel

OSSFree
Microsoft
58.3K800.0K/w5w ago445
5
D

Dify

Production-ready agentic AI application platform — 132K+ stars

OSSfreemium
LangGenius
142.2Ktoday460
6
F

Flowise

Build AI agents visually with drag-and-drop — 51K+ stars

OSSFree
FlowiseAI
53.0Ktoday318
7
L

Langflow

Visual framework for building and deploying AI agents — 145K+ stars

OSSFree
Langflow AI
148.6Ktoday323
8
M

MetaGPT

Multi-agent framework — the first AI software company — 65K+ stars

OSSFree
FoundationAgents
68.2K17w ago116
9
L

LiteLLM

Universal LLM API gateway for 200+ providers — 38K+ stars

OSSFree
BerriAI
47.9Ktoday385
10
A

Agno

Build, run, and manage agentic software at scale with 38K+ stars

OSSFree
Agno AGI
40.3Ktoday432
11
D

DSPy

Framework for programming — not prompting — LLMs — 33K+ stars

OSSFree
Stanford NLP
34.6Ktoday394
12
L

LangGraph

LangChain's framework for building stateful agent graphs — 26K+ stars

OSSFree
LangChain
32.7Ktoday273
13
s

smolagents

Lightweight agent framework by HuggingFace — minimal code, maximum control

OSSFree
Hugging Face
27.4K3d ago200
14
C

CopilotKit

React/Angular frontend SDK for AI agents with generative UI — 29K+ stars

OSSFree
CopilotKit
31.7Ktoday160
15
S

Semantic Kernel

Microsoft's SDK for integrating LLMs into applications — 24K+ stars

OSSFree
Microsoft
28.0K3d ago395
16
H

Haystack

End-to-end LLM framework for building NLP and agent pipelines — 18K+ stars

OSSFree
deepset
25.3K600.0K/wtoday347
17
C

Composio

1000+ toolkits for AI agents with managed auth — 27K+ stars

OSSfreemium
Composio
28.4Ktoday51
18
V

Vercel AI SDK

TypeScript toolkit for building AI-powered applications — 15K+ stars

OSSFree
Vercel
24.4K450.0K/wtoday472
19
O

OpenAI Agents SDK

OpenAI's official Python SDK for building multi-agent systems — 19K+ stars

OSSFree
OpenAI
26.6Ktoday274
20
A

Anthropic Agent SDK

Claude-native agent framework with built-in MCP and tool use — 4.6K stars

OSSFree
Anthropic
3.5K2.5M/wtoday55
21
F

FastMCP

The fast, Pythonic way to build MCP servers — 24K+ stars

OSSFree
Prefect
25.3Ktoday238
22
M

Mastra

TypeScript framework for building AI agents and workflows

OSSFree
Mastra
24.2K12.0K/wtoday438
23
R

Rasa

On-premise conversational AI framework for enterprise virtual assistants

OSSfreemium
Rasa Technologies
21.2K400.0K/w16w ago298
24
L

Letta

Stateful agents with long-term memory — formerly MemGPT — 15K stars

OSSFree
Letta
22.9K120.0K/w1w ago140
25
G

Google Agent Development Kit

Google's official framework for building AI agents — 18K+ stars

OSSFree
Google
19.8Ktoday274
26
P

PydanticAI

Type-safe agent framework built on Pydantic for Python

OSSFree
Pydantic
17.2Ktoday450
27
C

CAMEL-AI

Multi-agent role-playing framework for communicative AI research — 18K stars

OSSFree
CAMEL-AI
17.0K150.0K/w3d ago208
28
N

NVIDIA Agent Toolkit

NeMo + Nemotron for building GPU-accelerated AI agents at scale

Commercialfreemium
NVIDIA
17.2Ktoday401
29
B

Botpress

Conversational agent builder with visual flow editor and LLM integration

OSSfreemium
Botpress
14.7K8.0K/wtoday67
30
S

Strands Agents

AWS's model-agnostic Python agent SDK with deep AWS service integrations

OSSFree
Amazon Web Services
5.9K80.0K/wtoday126
31
R

Rivet

Visual AI agent builder with a node-based IDE — by Ironclad

OSSFree
Ironclad
4.6K1.5K/w1w ago44
32
B

BeeAI

IBM's open-source framework for building production-ready AI agents

OSSFree
i-am-bee
3.3K3.5K/w1w ago72
33
C

Cloudflare Agents SDK

Build AI agents on Cloudflare's global edge runtime with MCP server support

OSSfreemium
Cloudflare
2.8K15.0K/w7w ago25
34
T

TanStack AI

Lightweight, type-safe AI SDK for React and Solid applications

OSSFree
TanStack
2.7K25.0K/wtoday59
35
L

Liquid AI Cookbook

Examples, tutorials and apps built with Liquid Foundation Models (LFM) and LEAP SDK — 1.4K+ stars

OSSFree
Liquid AI
2.0K3d ago22
36
A

Agency Swarm

Open-source framework for orchestrating role-based AI agent swarms with Python

OSSFree
VRSEN
37
a

agentdev

Lightweight AI agent framework with built-in debugger for OpenAI, Anthropic & MCP

OSSFree
Community Project
38
A

AgentFlyer

Decentralized multi-host AI agent framework with cross-platform federation

OSSFree
tddt
39
A

AgenticCyOps

Enterprise security framework for multi-agent AI in cyber operations

OSSFree
Research (Shaswata Mitra et al.)
40
A

AgenticRec

Agentic framework for optimizing recommendation system rankings through end-to-end policy learning

OSSFree
Tianyi Li
41
A

Ares

Adaptive reasoning framework that optimizes LLM inference costs by dynamically scaling effort

OSSFree
Research Collaboration
42
A

AsyncFC

Asynchronous function calling framework that parallelizes LLM tool execution for faster agents

OSSFree
UC Berkeley
43
A

AutoAgent

Self-evolving multi-agent framework with adaptive cognition and elastic memory for open-ended tasks

OSSFree
Research
44
A

AutoAgent

Self-evolving multi-agent framework with adaptive learning and elastic memory orchestration

OSSFree
Research (Xiaoxing Wang et al.)
45
A

Automat

Autonomous feature engineering for materials science via LLM-driven genetic programming

OSSFree
Trinity College Dublin
46
A

AWS Bedrock Agents

Fully managed AI agents on Amazon Bedrock with enterprise integrations

Commercialpaid
Amazon Web Services
47
A

Azure AI Agent Service

Microsoft's managed agent platform with enterprise security and compliance

Commercialpaid
Microsoft
48
B

BrainOS JS

High-performance multi-agent framework with Rust core and Node.js bindings

OSSFree
Open1s
49
B

BrainOS

High-performance multi-language AI agent framework powered by Rust with Node.js bindings

OSSFree
open1s
50
B

BrainOS

Multi-language agent framework with Rust core, event bus, and MCP support

OSSFree
Open1s
51
B

BrowserDD

Production-grade LLM-powered browser automation framework with DOM analysis and multi-model support

OSSFree
Hert4
52
C

CAST

Case-driven framework that learns from execution trajectories to optimize LLM tool use

OSSFree
Research collaboration
53
C

Chiron

Industrial platform coordinating humans and AI agents across software delivery lifecycle

unknownunknown
Industrial Research Team
54
C

Cipher

Memory-powered AI agent framework with WebSocket communication and MCP integration

OSSFree
ByteRover
55
D

Databricks Mosaic AI

Lakehouse-native AI agent platform with Agent Bricks and model serving

Commercialpaid
Databricks
56
E

EchoGuard

Knowledge Graph-powered memory framework for detecting manipulation in long-term AI conversations

OSSFree
Research Team (Kandala et al.)
57
E

ELITE

Self-improving embodied AI framework that learns from mistakes and transfers knowledge across tasks

OSSFree
Research Team
58
E

EnterpriseLab

Enterprise-grade framework for privacy-preserving AI agent development with closed-loop training

OSSFree
Ankush Agarwal
59
E

Ethos Agent

TypeScript framework for building AI agents with personality-driven architecture and identity

OSSFree
Ethos Agent
60
E

Ethos

TypeScript framework where agent personality drives architecture and behavior

OSSFree
Ethos Agent
61
E

EvoTool

Evolutionary framework that self-optimizes tool-use policies for long-horizon LLM agent tasks

OSSFree
Research Team (Yang et al.)
62
F

Fal Agent

Type-safe AI agent framework with declarative routing and provider abstraction

OSSFree
Fal AI
63
F

FastAgency

Rapid multi-agent deployment framework for Python

OSSFree
airt
53820.0K/w12w ago10
64
F

FastMCP

Fast, Pythonic framework for building Model Context Protocol servers and clients

OSSFree
Prefect
65
f

fastmcp

Pythonic framework for building MCP servers and clients with minimal boilerplate

OSSFree
Prefect
66
G

Google Vertex AI Agent Builder

Google Cloud's platform for building grounded AI agents with Gemini

Commercialpaid
Google Cloud
67
G

Gumloop

Natural language automation builder for AI workflows

Commercialfreemium
Gumloop
68
H

Helix Agent Framework

Privacy-focused, offline-capable AI agent framework for JavaScript/TypeScript

OSSFree
Independent
69
H

HiMAP-Travel

Hierarchical multi-agent framework for long-horizon constrained planning with resource allocation

OSSFree
Research Team (Bui et al.)
70
I

IBM watsonx Orchestrate

Enterprise AI assistant platform for automating complex business workflows

Commercialenterprise
IBM
71
I

IQAI ADK

TypeScript-native framework for production AI agents with multi-provider LLM orchestration

OSSFree
IQAI
72
I

IronEngine

Unified orchestration platform with multi-phase planning, 24-category tools, and adaptive model switching

OSSFree
Independent Research
73
J

Jarvis Agent

Production-ready JavaScript framework for browser automation and AI workflow agents

OSSFree
Open Source
74
K

Kognitive Agents

Open-source AI agent framework with built-in safety guardrails and multi-agent coordination

OSSFree
Kognitive
75
L

Learn Claude Code

Learn to build Claude Code-like agents from scratch with hands-on tutorials

OSSFree
shareAI-lab
76
L

Looopy AI Core

Reactive AI agent framework built on RxJS for event-driven, composable agent architectures

OSSFree
Looopy AI
77
L

Looopy AI

RxJS-powered reactive AI agent framework with functional programming patterns

OSSFree
Looopy AI
78
L

Looopy AI

Reactive AI agent framework built on RxJS for observable-driven agent patterns

OSSFree
Looopy AI
79
M

MADA

Multi-agent framework for HPC-powered design workflows with automated experiment tracking

OSSFree
Lawrence Livermore National Laboratory
80
M

Mayros

Multi-channel AI framework with knowledge graph integration and MCP support

OSSFree
Apilium
81
M

Microsoft Copilot Studio

Low-code agent builder with Microsoft 365 and Teams integration

Commercialpaid
Microsoft
82
M

MuleSoft Agent Fabric

Agent discovery and registry for cross-platform AI orchestration

Commercialenterprise
Salesforce
83
O

Oracle AI Agents

Fusion-native AI agents for ERP, HCM, and line-of-business applications

Commercialenterprise
Oracle
84
O

Orchard

Microsoft's framework for training autonomous agents with planning, reasoning, and tool use

OSSFree
Microsoft Research
85
P

PMAx

Natural language interface for AI-driven process mining and workflow analysis

OSSFree
Wil van der Aalst et al.
86
Q

QUARE

Multi-agent framework for resolving quality attribute conflicts in requirements engineering

OSSFree
Research Team
87
Q

Quasar

10B parameter foundation model with 2M token context using Gated Linear Attention

OSSFree
SilX AI
88
Q

Quoroom

Local-first multi-agent framework with Queen-Workers-Quorum consensus architecture

OSSFree
Quoroom AI
89
R

RAGFlow

Open-source RAG engine with agent capabilities, GraphRAG, and MCP integration

OSSFree
InfiniFlow
90
R

Reactive Agents

Effect-TS based agent framework with fine-grained control and MCP support

OSSFree
Tyler Buell
91
R

Reactive Agents

Type-safe AI agent framework with Effect-TS and React Loop patterns for composable agents

OSSFree
tylerjrbuell
92
R

Reactive Agents

Effect-TS framework for composable AI agents with React-style loops and MCP support

OSSFree
Tyler Buell
93
R

Reactive Agents

Effect-TS framework for composable AI agents with structured dimensions and MCP integration

OSSFree
tylerjrbuell
94
R

Relevance AI

No-code platform for building and deploying multi-agent AI workflows

Commercialfreemium
Relevance AI
95
R

RoboClaw

VLM-driven robotics framework for autonomous long-horizon task execution and policy learning

OSSFree
Research Team
96
R

Ruflo

Enterprise multi-agent orchestration platform with native Claude integration and swarm intelligence

OSSFree
ruvnet
97
r

ruflo

Enterprise-grade orchestration platform for Claude multi-agent swarms with RAG and distributed intelligence

OSSFree
ruvnet
98
S

Salesforce Agentforce

AI agents for CRM — sales, service, marketing, and commerce automation

Commercialenterprise
Salesforce
99
S

SAP Joule Studio

BTP-native AI agent builder for SAP enterprise applications

Commercialenterprise
SAP
100
S

ServiceNow Now Assist

AI agents for ITSM, HR, and customer service on the Now Platform

Commercialenterprise
ServiceNow
101
S

Snowflake Cortex AI

Data-centric AI agents running natively in the Snowflake data cloud

Commercialpaid
Snowflake
102
S

SPD-RAG

Hierarchical multi-agent RAG system that assigns specialized sub-agents per document

OSSFree
Research Collaboration
103
S

SplitAgent

Privacy-first distributed AI architecture for secure enterprise-cloud collaboration

OSSFree
Independent Research
104
S

Stack AI

Visual AI agent builder for enterprise workflows and document processing

Commercialfreemium
Stack AI
105
T

TITAN Agent

TypeScript framework for multi-agent orchestration with approval gates and Mission Control UI

OSSFree
Djtony707
106
T

TITAN Agent

Full-featured TypeScript agent framework with multi-agent orchestration and Mission Control UI

OSSFree
Djtony707
107
T

TITAN Agent

Autonomous AI agent framework with Mission Control GUI and multi-channel communication

OSSFree
Djtony707
108
T

ToolRosetta

Automated tool standardization framework bridging open-source repos with LLM agents via MCP

OSSFree
Research (Shimin Di et al.)
109
V

Vellum

Visual AI workflow builder with SDK and enterprise governance

Commercialfreemium
Vellum AI
110
V

VoltAgent

Lightweight JavaScript framework for building composable autonomous agents with minimal dependencies

OSSFree
VoltAgent
111
W

Wunderland

Security-hardened AI agent framework with HEXACO personality modeling and 37+ integrations

OSSFree
jddunn
112
X

Xiaoma CLI

Universal AI agent framework built for agile development workflows and team collaboration

OSSFree
Xiaoma Team
113
X

XiaoMa CLI

CLI-based AI agent orchestrator for agile development workflows and multi-agent coordination

OSSFree
Zeyue
114
X

XSkill

Continual learning framework enabling multimodal agents to improve from experience without retraining

OSSFree
Research Team
115
Z

Zapier Agents

AI agents within Zapier's 7000+ app integration ecosystem

Commercialpaid
Zapier
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