Agents

Frameworks and platforms for building AI agents.

Best AI Agent Frameworks 2026: ranked list →

• LangChain Visit framework

  Framework and platform for building LLM applications and agents.

• LlamaIndex Visit framework

  Framework for connecting data to language models and agents.

• CrewAI Visit framework · multi-agent

  Framework for multi-agent crews.

• AutoGen Visit framework · microsoft

  Microsoft's framework for multi-agent conversations.

• Dify Visit platform

  Open-source platform for LLM apps, workflows, and agents.

• Flowise Visit visual · open-source

  Open-source visual builder for LLM flows.

• Mastra Visit typescript

  TypeScript framework for agents, workflows, and RAG.

• PydanticAI Visit python

  Python agent framework from the Pydantic team.

• Semantic Kernel Visit microsoft · sdk

  Microsoft SDK for orchestrating models and plugins.

• Haystack Visit python · rag

  Open-source framework for RAG pipelines and agents.

• Letta Visit memory

  Agent runtime with persistent memory, from the MemGPT project.

• Browser Use Visit browser

  Library for letting an agent drive a browser.

• E2B Visit sandbox

  Sandboxed cloud environments for AI agents to run code.

• Composio Visit tools

  Tool integrations and auth for AI agents.

• Dust Visit platform

  Platform for building company agents on internal data.

• Agno Visit python

  Python framework for agents, formerly Phidata.

• Browserbase Visit browser

  Hosted browsers for agents and automation.

• Langfuse Visit observability

  Open-source tracing and evals for LLM applications.

• Amazon Bedrock AgentCore Visit aws · bedrock

  Serverless AgentCore Runtime in Amazon Bedrock for deploying and scaling AI agents.

• Modal Visit compute

  Serverless cloud for running model and agent code.

• ESP32 iPhone Agent Visit iphone · esp32 · vision

  Lets a vision model use a real iPhone via AirPlay mirroring and a $7 ESP32 acting as USB mouse and keyboard.

• Chainguard Workspaces Visit security · sandbox

  Isolates untrusted code in Chainguard-hardened microVMs so agents cannot steal your secrets. In beta.

• Docker Agentic Platform Visit docker · sandbox

  Runs your agents in isolated sandboxes on Docker-managed cloud infrastructure. Experimental.

• Agentic Batch Changes Visit sourcegraph · migration

  Describe a change in plain language. The agent scopes it across your indexed codebase and tracks it through to merge.

• Omnara Visit agent · api

  Open-source agent API for any model and machine. Self-host free under Apache 2.0, or use the cloud with a $0 platform fee.

• Alter Visit agent · security

  Privileged access for AI agents. Vaulted credentials, per-call policy, and an audit log. Free tier is 10,000 API calls a month.

• OpenShell Visit agent · sandbox

  Safe, private runtime for fleets of autonomous AI agents. Sandboxes enforce file, syscall, and network policy. Apache 2.0.

• Agensh Visit agent · harness

  Self-organized multi-agent harness. Agents claim sub-tasks and merge progress without a central orchestrator. MIT.

• LearnHarness Visit agent · learning

  Agent harness that plans and teaches from your current understanding, then keeps a knowledge graph. AGPL-3.0.

• Harness² Visit agent · harness

  Framework that refines an agent harness on new tasks while model weights stay fixed. Apache 2.0.