175 listed
Harnesses & SDKs
Frameworks and SDKs for building agents: the Claude Agent SDK, OpenAI Agents SDK, LangGraph, CrewAI and many more. Each page lists languages, packages, MCP and A2A support and how it orchestrates agents, with a link to the page every fact came from.
Showing 1–18 of 18
- 0.851score
Strands Agents
AWS
Open-source Python and TypeScript SDK for model-driven agents, with tools, MCP, multi-agent patterns and streaming.
HarnessAFreshness: A★ 8.9K↓ 8.9M/wk - 0.679score
CAMEL
CAMEL-AI
Open-source Python framework for multi-agent systems: agent societies, memory, RAG, code interpreters, synthetic data and large-scale simulation.
HarnessAFreshness: A★ 18K↓ 20.1K/wk - 0.662score
fast-agent
evalstate
CLI-first Python agent framework and coding agent with MCP, A2A and Agent Skills support, live streaming and human input.
HarnessAFreshness: A★ 3.9K↓ 19.5K/wk - 0.650score
agent-governance-toolkit
microsoft
Policy enforcement, identity, sandboxing and reliability tooling for autonomous AI agents, installable with one pip command.
HarnessAFreshness: A★ 6.5K↓ 28.3K/wk - 0.641score
EvoAgentX
ANative-Lab
Open-source framework that builds, evaluates and self-improves multi-agent LLM workflows from a goal.
HarnessAFreshness: A★ 3.4K - 0.639score
Burr
Apache Software Foundation
Python framework that models an application as a state machine, with a trace UI and persisted state.
HarnessAFreshness: A★ 2.6K↓ 4.7K/wk - 0.638score
Langroid
Langroid
Python framework for LLM apps built from collaborating agents that hold conversation state, tools and vector-store memory.
HarnessAFreshness: A★ 4.1K↓ 3.4K/wk - 0.620score
uAgents
fetchai
Python library for autonomous agents that run scheduled tasks and exchange messages on the Fetch.ai network.
HarnessAFreshness: A★ 1.6K↓ 2.4K/wk - 0.605score
cayu
cayu-dev
Python runtime and framework for long-running agents, with durable sessions, approvals, spend caps and multi-agent collaboration.
HarnessAFreshness: A★ 927↓ 1.5K/wk - 0.578score
agentUniverse
Ant Group
Python multi-agent framework with PEER and DOE collaboration patterns and configurable LLM vendors such as Qwen, DeepSeek and OpenAI.
HarnessAFreshness: A★ 2.4K↓ 69/wk - 0.566score
LightAgent
wanxingai
Python agent framework for OpenAI-compatible agents with tools, memory, MCP connections, multi-agent collaboration and workflows.
HarnessAFreshness: A★ 1.2K↓ 61/wk - 0.559score
Bindu
GetBindu
Python platform that gives agents a cryptographic identity, A2A communication and x402 payment requirements behind one bindufy() call.
HarnessBFreshness: B★ 10K↓ 104/wk - 0.540score
AgentForge
DataBassGit
Low-code Python framework for YAML-defined agents and multi-agent Cogs, with personas, prompt templates and memory nodes.
HarnessBFreshness: B★ 860↓ 241/wk - 0.518score
Upsonic
Upsonic
Python framework for autonomous agents that work in a sandboxed workspace, and task agents with tools and MCP support.
HarnessCFreshness: C★ 8K↓ 244/wk - 0.514score
mcp-agent
LastMile AI
Python framework for MCP-based agents with composable workflow patterns, MCP server creation and Temporal-backed durable execution.
HarnessDFreshness: D★ 8.6K↓ 15.2K/wk - 0.484score
MetaGPT
FoundationAgents
Python multi-agent framework that gives LLM agents software-company roles and SOPs to turn a one-line requirement into a project repository.
HarnessDFreshness: D★ 71K↓ 622/wk - 0.443score
Lagent
InternLM
Lightweight Python framework for LLM agents built as PyTorch-style layers, with agent memory kept as session state.
HarnessDFreshness: D★ 2.3K↓ 354/wk - 0.420score
Youtu-Agent
Tencent
Framework for building, running and evaluating autonomous agents, with a planner-based multi-agent mode, skills and agent RL training.
HarnessDFreshness: D★ 4.6K↓ 23/wk