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 25–36 of 36
- 0.638score
HelloAgents
jjyaoao
Modular Python agent framework with a tool-calling loop, context management, retrieval, persistent memory and MCP tools.
HarnessAFreshness: A★ 3.3K - 0.621score
Semantic Kernel
Microsoft
Model-agnostic SDK for building agents and multi-agent systems in Python, .NET and Java; Microsoft names Agent Framework as its successor.
HarnessAFreshness: A★ 28.7K↓ 77.5K/wk - 0.615score
Vision-Agents
GetStream
Python framework for real-time voice and vision agents that process video with pluggable models and processors over WebRTC.
HarnessAFreshness: A★ 8.2K↓ 418/wk - 0.605score
Foundry
promptise-com
Python framework for agents that discover MCP tools by themselves, with optional memory, guardrails, cache and tracing.
HarnessAFreshness: A★ 892↓ 1.5K/wk - 0.599score
any-agent
Mozilla.ai
Python interface for running and evaluating agents from several frameworks, with OpenTelemetry traces; now in soft deprecation.
HarnessAFreshness: A★ 1.3K↓ 638/wk - 0.580score
heurist-agent-framework
heurist-network
Multi-interface agent framework with tools, memory and MCP, serving agents through Telegram, Discord, Twitter, Farcaster and a REST API.
HarnessAFreshness: A★ 826 - 0.571score
Julep
Julep AI
Python framework for durable AI agents built as dataflows that resume after crashes, retry safely and record each step.
HarnessBFreshness: B★ 6.6K↓ 368/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 - 0.525score
Qwen-Agent
Alibaba Qwen
Python framework for LLM applications built on Qwen models, with function calling, MCP, a code interpreter and RAG options.
HarnessDFreshness: D★ 17.2K↓ 21K/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 - 0.408score
Azure AI Foundry Agents SDK
Microsoft
Managed Microsoft Foundry service for building, deploying and scaling AI agents, with a Python client library on PyPI.
HarnessFFreshness: F↓ 1.1M/wk