AI Agents List [2026] | Frameworks, Agentic Harnesses & Useful Repos
Blog post from Hugging Face
Published in September 2026, this community-maintained directory surveys AI agent frameworks, coding harnesses, research and browser agents, voice tools, visual builders, evaluation systems, sandboxes, and interoperability protocols, emphasizing that it is a research resource rather than a benchmark or endorsement. It recommends tools by use case, including Pydantic AI for typed Python agents, LangGraph for stateful workflows, Mastra and VoltAgent for TypeScript, Codex CLI and OpenCode for terminal coding, GPT Researcher for cited reports, and LiveKit Agents or Pipecat for voice applications. The directory distinguishes reusable frameworks from agentic harnesses, which manage execution loops, tools, permissions, context, sessions, and error handling around a model, and it identifies licensing or commercial-service restrictions for products such as Claude Code, Dify, n8n, AutoGPT, and GitLab Duo. It also notes projects with changed maintenance status, including AutoGen, Continue, Flowise, and Roo Code, while urging users to evaluate projects against their own tasks, models, costs, reliability needs, and recovery requirements. Security guidance stresses isolated workspaces, constrained filesystem, shell, network, and credential access, cautious treatment of plugins and MCP servers, version pinning, review of advisories, and human approval for consequential actions, citing a 2026 unauthorized Cline CLI package publication as an example of supply-chain risk.
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