AWS's Agent Toolkit for AWS, an open-source Python project with 2.7k GitHub stars last updated in September 2026, provides official MCP servers, skills and plugins that let coding agents build and dep…
The official MCP TypeScript SDK reached v2, implementing the 2026-07-28 specification with separate server and client packages and optional middleware for Node.js HTTP, Express and Fastify, according …
CopilotKit, an open-source TypeScript SDK for full-stack agentic applications, has reached 38,000 GitHub stars, with the headline figure cited as 37,582. The SDK provides generative UI, shared state a…
The unofficial Home Assistant MCP server ha-mcp, an open-source Python project with 4.9k GitHub stars, was last updated in September 2026, letting AI assistants control smart home devices, query state…
Nous Research's Hermes Agent, an open-source general-purpose AI agent written primarily in Python, has reached 248,000 stars on GitHub and was last updated in September 2026. The agent builds skills f…
Sim, an open-source TypeScript workspace for building, deploying and monitoring AI agents and workflows, shipped an update and now carries 30,000 stars on GitHub, according to the project's listing. S…
Vercel's AI SDK, an open-source TypeScript toolkit for building AI applications and agents, was last updated in September 2026 and has reached 27,000 stars on GitHub. The provider-agnostic library off…
Comet's open-source Opik platform, which provides LLM and agent tracing, evaluation, prompt management and monitoring, has shipped an update, according to the project's public documentation. Opik is A…
Kilo Code, an open-source AI coding agent for VS Code, JetBrains IDEs and the CLI, was last updated in September 2026 and offers access to more than 500 models at the provider's rate with no markup. T…
Langfuse, the open-source LLM engineering platform for tracing, evaluation, prompt management and debugging, was last updated in September 2026 and now carries 35k stars on GitHub. The TypeScript-base…
Callstack's open-source agent-device project, which gives coding agents a live feedback loop on real apps via a CLI, built-in MCP server and typed Node.js API, has 4.8k stars on GitHub and was last up…
Mastra, an open-source TypeScript framework for AI applications and agents, has been updated as of September 2026 and now holds 28,000 stars on GitHub. The framework routes to more than 40 model provi…
Zed, the Rust-based code editor from the creators of Atom and Tree-sitter, has 91,000 GitHub stars and was last updated in September 2026, according to its public listing. The editor ships native agen…
Qwen Code, the Qwen team's open-source terminal coding agent, shipped an update and now lists 28k GitHub stars, with its last update recorded in September 2026. The TypeScript project, licensed Apache…
AgentScope 2.0, an open-source Python agent framework with 32,000 GitHub stars, has added model routing, realtime voice agents across several providers' realtime APIs, A2A protocol support and MCP, pl…
Windmill, an open-source developer platform that turns scripts into webhooks, workflows and internal UIs, shipped an update, according to a listing checked against public documentation. The self-hosta…
Freebuff, the coding-agent project formerly known as Codebuff, shipped an update and now offers a free, ad-supported family of coding and research agents for the terminal, desktop, browser and GitHub …
MCPJam Inspector, an open-source TypeScript platform for testing and evaluating MCP servers, MCP apps and ChatGPT apps, was last updated in September 2026 and holds 2.2k stars on GitHub. The tool lets…
Google's open-source Agent Development Kit for Go (Google ADK) has been updated, with the code-first Go toolkit for building, evaluating and deploying AI agents now at 8.8k GitHub stars as of its Sept…
Skybridge, an open-source TypeScript framework for building type-safe MCP apps with interactive UI views for Claude and ChatGPT, has shipped an update, with its GitHub repository last updated in Septe…