Find and compare tools for every layer of your AI agent stack.

Compare AI agent frameworks, memory, RAG, MCP, evaluation, and tracing tools for every layer of your agent stack.

Top 10 by Agent Stack Layer

Switch dimensions to compare the strongest options for each layer.

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1. LangGraphStateful graph orchestration for controllable agents.stateful workflowshuman review nodesOpen source
2. OpenAI Agents SDKA lightweight SDK for agents, tools, handoffs, and traces.OpenAI-first teamstool callingOpen source
3. LlamaIndexData and retrieval framework for LLM and agent apps.RAGdocument workflowsOpen source
4. CrewAIRole-based multi-agent workflow framework.role modelingmulti-agent teamsOpen source
5. Microsoft AutoGenFramework for multi-agent conversations and collaboration.multi-party dialogueresearch prototypesOpen source
6. AgnoLightweight agent framework with a clear path from SDK to production API.rapid prototypingproduction API deploymentOpen source
7. Strands AgentsAWS-native agent SDK for tool use and deployment.AWS-native teamstool calling agentsOpen source
8. E2BCloud sandbox for agents that write code, execute commands, and handle files.code executionagent sandboxingOpen source
9. Browserbase StagehandNatural-language browser automation backed by production cloud browsers.browser agentsweb automationOpen source
10. OpenHandsOpen-source software engineering agent for code, files, and terminals.coding agentsPR generationOpen source

See all in Agent Frameworks

Choose by Architecture Layer

Each layer opens a focused shortlist for tools, guides, and comparisons.

Agent Frameworksorchestration, state, tools, handoffs

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Agent Memorypersistent user facts and task state

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Agentic RAGretrieval loops, evidence, reranking

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MCP Serversreusable tool and context boundary

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Agent Evaluationregression tests and quality checks

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Agent Tracinginspectable runs, latency, cost, errors

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Which agent stack decision are you making?

Start from the problem you need to solve.

Choose a framework when orchestration, state, tools, and handoffs need one runtime boundary.

Agent Frameworks OpenAI Agents SDK vs LangGraph

Recently Added

New tool pages added to the directory — scan logos and dates at a glance.

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LangfuseAdded 2026-06-03

BraintrustAdded 2026-06-03

HeliconeAdded 2026-06-03

TraceloopAdded 2026-06-03

LangWatchAdded 2026-06-03

Weights & Biases WeaveAdded 2026-06-03

Compare Alternatives

High-intent swap comparisons when you already know the incumbent tool.

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The Best OpenAI Agents SDK AlternativesCompare OpenAI Agents SDK alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

The Best LangGraph AlternativesCompare LangGraph alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

The Best LlamaIndex AlternativesCompare LlamaIndex alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

The Best CrewAI AlternativesCompare CrewAI alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

The Best Microsoft AutoGen AlternativesCompare Microsoft AutoGen alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

The Best Mem0 AlternativesCompare Mem0 alternatives by when to choose each option, when it is not ideal, and what to consider before switching.3 alternatives

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