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AI Tools Directory

Discover the tools behind real AI build, eval, and deployment workflows.

Browse by role in the stack, not just by vendor. Compare fit here, then open a tool detail page when it earns deeper inspection.

Open My AI StackBrowse Agent Capabilities

Stack layer

Narrow the directory by what the tool does in the workflow.

All Tools467Models886Environment6Action Space411Observation19Reward / Eval10Policy Serving35Training Infra5Safety / Guardrails7Orchestration16

Browse tools

467 results in the directory

Suggest a tool
Agent FrameworkLangfuseOpen source

Langfuse

Open-source LLM observability and evals.

8 related challengesInspect tool
Agent FrameworkLangChainOpen source

LangGraph

Runtime for stateful agent workflows.

4 related challengesInspect tool
Agent Systems · Multi-Agent SystemsLangroidOpen source

Langroid

Agent Systems · Multi-Agent Systems

Free (OSS)Inspect tool
Agent FrameworkLangChainCommercial

Langsmith

LangChain tracing, debugging, and evaluation platform.

SubscriptionInspect tool
AI Workflow Automation · Observability, Evaluation & GovernanceLangWatchFreemium

LangWatch

LLM monitoring and analytics

1 related challengeInspect tool
AI Workflow Automation · Observability, Evaluation & GovernanceLarridinFreemium

Larridin

AI evaluation platform

UnknownInspect tool
AI Engineering Tooling · Security & Risk Management PlatformsLasso SecurityFreemium

Lasso Security

GenAI security platform

UnknownInspect tool
Models · Large Language ModelsLastMile AIFreemium

LastMile AI

LLM app development & evaluation

1 related challengeInspect tool
AI Engineering Tooling · Security & Risk Management PlatformsLatticeFlow AIFreemium

LatticeFlow AI

AI quality and security

UnknownInspect tool
AI Engineering Tooling · Developer ToolsLazy DevPaid

Lazy Dev

AI full-stack code generator

SubscriptionInspect tool
INFERENCELepton AICOMMERCIAL

Lepton AI

PaidInspect tool
Agent Systems · Memory ManagementLettaFreemium

Letta

Stateful LLM framework (formerly MemGPT)

UnknownInspect tool

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