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

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

All Tools461Environment6Action Space411Observation19Reward / Eval10Policy Serving35Training Infra5Safety / Guardrails7Orchestration16

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411 results in the directory

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INFERENCELepton AICOMMERCIAL

Lepton AI

PaidInspect tool
Agent Systems · Memory ManagementLettaFreemium

Letta

Stateful LLM framework (formerly MemGPT)

UnknownInspect tool
Agent FrameworkLetta AIFreemium

Letta AI

Persistent memory for AI agents

Contact / DemoInspect tool
AI Workflow Automation · LLM Benchmarking & Model RoutingLibrettoFreemium

Libretto

LLM testing platform

1 related challengeInspect tool
AI Engineering Tooling · Developer ToolsLightning AIOpen source

Lightning AI

AI training & deployment platform

Freemium / SubscriptionInspect tool
AI Engineering Tooling · Developer ToolsLightski AIFreemium

Lightski

AI auto-documentation generator

Beta / ContactInspect tool
AI Engineering Tooling · Developer ToolsLIMEOpen source

LIME (Explainability)

Explainability

Free (OSS)Inspect tool
AI Workflow Automation · Low-Code PlatformsLindyFreemium

Lindy

AI assistant builder

UnknownInspect tool
Models · Large Language ModelsLingo DevPaid

Lingo

LLM observability & evaluation

SubscriptionInspect tool
AI Engineering Tooling · AI Web Search APIs & ScrapersLinkupFreemium

Linkup

Web search for AI

UnknownInspect tool
Assistants & Interfaces · VoiceLiveKitFreemium

LiveKit

Real-time voice and video infrastructure

1 related challengeInspect tool
Models · Large Language ModelsMetaOpen Source

Llama 3.1 405B

LLM

Free (OSS)Inspect tool

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