Agent2Agent (A2A) is an open protocol enabling communication and interoperability between opaque agentic applications.

• UpdatedFeb 18, 2026
• Shell

An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

• UpdatedFeb 20, 2026
• Go

⚡️AI Cloud OS: Open-source enterprise-level AI knowledge base and MCP (model-context-protocol)/A2A (agent-to-agent) management platform with admin UI, user management and Single-Sign-On⚡️, supports ChatGPT, Claude, Llama, Ollama, HuggingFace, etc., chat bot demo:https://ai.casibase.com, admin UI demo:https://ai-admin.casibase.com

• UpdatedFeb 20, 2026
• Go

AG2 (formerly AutoGen): The Open-Source AgentOS. Join us at:https://discord.gg/sNGSwQME3x

• UpdatedFeb 20, 2026
• Python

Learn Agentic AI using Dapr Agentic Cloud Ascent (DACA) Design Pattern and Agent-Native Cloud Technologies: OpenAI Agents SDK, Memory, MCP, A2A, Knowledge Graphs, Dapr, Rancher Desktop, and Kubernetes.

• UpdatedOct 26, 2025
• Jupyter Notebook

Secure cloud-native MCP registry, gateway & orchestrator

• UpdatedFeb 20, 2026
• TypeScript

Building a Secure and Interoperable Future for AI-Driven Payments.

• UpdatedFeb 13, 2026
• Python

An event-driven framework designed to build and orchestrate multi-agent AI systems. It enables seamless integration of AI agents with real-world data sources and systems, facilitating complex, multi-step workflows.

• UpdatedFeb 20, 2026
• Python

Official Python SDK for the Agent2Agent (A2A) Protocol

• UpdatedFeb 20, 2026
• Python

Samples using the Agent2Agent (A2A) Protocol

• UpdatedDec 23, 2025
• Jupyter Notebook

A single interface to use and evaluate different agent frameworks

• UpdatedFeb 18, 2026
• Python

Bindu: Turn any AI agent into a living microservice - interoperable, observable, composable.

• UpdatedFeb 19, 2026
• Python

trpc-agent-go is a powerful Go framework for building intelligent agent systems using large language models (LLMs) and tools.

• UpdatedFeb 19, 2026
• Go

Labs to explore AI Models, MCP servers, and Agents with the AI Gateway powered by Azure API Management and Microsoft Foundry 🚀

• UpdatedFeb 20, 2026
• Jupyter Notebook

Nuwax Agent OS - The world's first universal agent operating system, building your private vertical general-purpose agent. 全球首个通用智能体操作系统，打造你私有的垂类通用智能体。新一代AI应用设计、开发、实践平台，无需代码，轻松创建，适合各类人群，支持多种端发布及API，提供完善的工作流、插件以及应用开发能力，RAG知识库与数据表存储能力，MCP接入以及开放能力。

• UpdatedFeb 14, 2026
• TypeScript

A decentralized agent network for building collaborative, LLM-powered agent-to-agent (A2A) systems.

• UpdatedJan 3, 2026
• Python

The .NET library to build AI agents with 30+ built-in connectors.

• UpdatedFeb 20, 2026
• C#

Agent2Agent (A2A) – awesome A2A agents, tools, servers & clients, all in one place.

• UpdatedOct 27, 2025

A production-ready runtime framework for agent apps with secure tool sandboxing, Agent-as-a-Service APIs, scalable deployment, full-stack observability, and broad framework compatibility.

• UpdatedFeb 13, 2026
• Python

The A2A x402 Extension brings cryptocurrency payments to the Agent-to-Agent (A2A) protocol, enabling agents to monetize their services through on-chain payments. This extension revives the spirit of HTTP 402 "Payment Required" for the decentralized agent ecosystem.

• UpdatedFeb 2, 2026
• Python