LangChain
Agent FrameworksFreePopular
Framework for building LLM-powered applications and workflows.
Best for
RAG systemsAgent applicationsMulti-step workflows
Open SourceAPISelf-hostedPython SDK
AI Tools Directory
Discover and compare AI tools for developers, researchers and businesses. Find the right framework, model, database or platform faster.
Popular
Editor's Pick
Claude
FreemiumAPICloud
Anthropic’s conversational AI focused on reliability and safety.
Best for
Long document analysisCode generation and reviewResearch synthesis
ChatGPT
AI AssistantsFreemiumPopular
General-purpose conversational AI assistant from OpenAI.
Best for
Research and brainstormingContent draftingCode assistance
APICloud
Claude
AI AssistantsFreemiumPopular
Anthropic’s conversational AI focused on reliability and safety.
Best for
Long document analysisCode generation and reviewResearch synthesis
APICloud
Cursor
AI CodingFreemiumTrending
AI-native code editor for building software with LLMs.
Best for
Full-stack developmentLarge codebase refactoringAI-assisted development
APICloud
Pinecone
Vector DatabasesFreemiumPopular
Managed vector database for similarity search and RAG.
Best for
RAG systemsSemantic searchRecommendation engines
APICloudSelf-hostedPython SDK
Gemini
AI AssistantsFreemium
Google’s multimodal AI that works with text, images, and code.
Best for
Google Workspace usersMultimodal tasksCode generation
APICloud
LangGraph
Agent FrameworksFreeEditor's Pick
Graph-based framework for stateful, multi-agent LLM workflows.
Best for
Multi-agent orchestrationStateful workflowsHuman-in-the-loop AI
Open SourceAPICloudSelf-hostedPython SDK
LlamaIndex
RAGFree
Data framework for connecting LLMs to private and structured data.
Best for
RAG over documentsKnowledge base Q&AData-heavy AI applications
Open SourceAPICloudSelf-hostedPython SDK
CrewAI
Agent FrameworksFreeNew
Library for building "crews" of collaborating AI agents.
Best for
Content pipelinesBusiness process automationTeam-like AI workflows
Open SourceAPISelf-hostedPython SDK
AutoGen
Agent FrameworksFree
Framework for multi-agent conversations and tool-using AI systems.
Best for
Multi-agent codingResearch pipelinesTask delegation
Open SourceAPISelf-hostedPython SDK
Weaviate
Vector DatabasesFreemiumMaintained
Open-source vector database with hybrid search and modules.
Best for
Enterprise searchRAG with hybrid retrievalSelf-hosted vector storage
APICloudSelf-hostedPython SDK
Ollama
Model ServingFree
Local model runner with simple command and HTTP interface.
Best for
Local LLM developmentPrivacy-sensitive workflowsModel testing
Open SourceAPISelf-hostedPython SDK
GitHub Copilot
AI CodingPaidEnterprise Ready
AI pair programmer integrated into IDEs and GitHub.
Best for
Code completionBoilerplate generationLearning new APIs
APICloud
Hugging Face Transformers
ML LibraryFree
Library for using pretrained transformers in Python and beyond.
Best for
Model fine-tuningNLP tasksResearch experimentation
Open SourceAPISelf-hostedPython SDK
Llama
Open LLMFree
Open model family from Meta for local and hosted LLMs.
Best for
Self-hosted AIFine-tuning for domain tasksPrivacy-sensitive applications
Open SourceAPISelf-hostedPython SDK
Streamlit
App FrameworkFree
Python framework for building data and ML web apps quickly.
Best for
ML demosInternal toolsData dashboards
Open SourceAPICloudSelf-hostedPython SDK
Gradio
App FrameworkFree
Python library for quick ML app interfaces and demos.
Best for
ML model demosQuick prototypesHugging Face Spaces apps
Open SourceAPISelf-hostedPython SDK
Midjourney
Image GenerationPaid
Text-to-image model accessed primarily through Discord.
Best for
Concept artMarketing visualsCreative exploration
API
DALL·E
Image GenerationFreemium
OpenAI’s image generation models accessible via API and ChatGPT.
Best for
Content creationAPI-driven image generationQuick visual prototyping
APICloud
Stable Diffusion
Image GenerationFree
Open-source text-to-image model family.
Best for
Self-hosted image generationCustom fine-tuned modelsBatch processing
Open SourceAPISelf-hostedPython SDK