Home / AI Stack Directory
84 tools. The whole modern AI stack.
Every tool we evaluate, integrate, or build on for clients — from generative AI and computer vision to payments and automation. Filter by how it's delivered (SaaS, PaaS, IaaS, DaaS, FaaS, open source) or what it's for.
ChatGPT
SaaSThe most-used AI assistant — drafting, analysis, brainstorming, and custom GPTs.
Best for: Everyday knowledge work across any team
Claude
SaaSAnthropic's assistant — strong on long documents, careful reasoning, and coding.
Best for: Contract review, reports, complex writing
Google Gemini
SaaSGoogle's assistant, woven through Gmail, Docs, and Android.
Best for: Teams already living in Google Workspace
Microsoft 365 Copilot
SaaSAI layer across Word, Excel, Outlook, and Teams.
Best for: Microsoft-first enterprises
Perplexity
SaaSAI search that answers with citations instead of links.
Best for: Research with verifiable sources
Jasper
SaaSMarketing-focused content generation with brand voice controls.
Best for: Content teams producing at volume
Notion AI
SaaSAI writing and Q&A inside the Notion workspace.
Best for: Docs-heavy startups and teams
Canva Magic Studio
SaaSAI design generation for non-designers — social posts, decks, videos.
Best for: SMB marketing without a design team
Midjourney
SaaSThe aesthetic benchmark for AI image generation.
Best for: Brand imagery, concept art, campaigns
Adobe Firefly
SaaSImage generation trained on licensed content — lower IP risk.
Best for: Commercial brand work needing legal safety
Stable Diffusion
OSSOpen-source image generation you can self-host and fine-tune.
Best for: Custom pipelines and full control
Runway
SaaSAI video generation and editing — text-to-video, effects, cleanup.
Best for: Video marketers and studios
Synthesia
SaaSStudio-quality avatar videos from a script — no camera.
Best for: Training and product-explainer videos
HeyGen
SaaSAvatar video plus translation and lip-synced dubbing.
Best for: Multilingual sales and support videos
ElevenLabs
SaaSThe leading realistic voice synthesis and cloning platform.
Best for: Voiceovers, IVR, and audio content
Suno
SaaSFull-song music generation from text prompts.
Best for: Jingles, background scores, creators
GitHub Copilot
SaaSIn-editor AI completion and agent tasks across major IDEs.
Best for: Developer productivity at any scale
Cursor
SaaSAI-first code editor that reasons across your whole repository.
Best for: Fast-moving product teams
Replit
PaaSBuild, run, and deploy apps from the browser with AI agents.
Best for: Prototypes and learning to ship
OpenAI API
PaaSGPT models, embeddings, images, and speech via API.
Best for: Building AI features into products
Anthropic API
PaaSClaude models via API — long context, strong tool use.
Best for: Agents and document-heavy workloads
Google AI Studio
PaaSGemini API with a generous free tier — this site's assistant runs on it.
Best for: Startups validating AI features at zero cost
Hugging Face
PaaSThe open-model hub — hundreds of thousands of models, spaces, and libraries.
Best for: Anything open-source AI
OpenRouter
PaaSOne API across dozens of model providers with fallbacks.
Best for: Model flexibility without rewrites
Groq
PaaSUltra-low-latency inference on custom hardware.
Best for: Realtime chat and voice applications
Together AI
PaaSHosting and fine-tuning for open models at scale.
Best for: Open-model production deployments
LangChain
OSSThe most-used framework for building LLM applications and agents.
Best for: RAG pipelines and agent orchestration
AWS Bedrock
IaaSManaged foundation models inside your AWS environment.
Best for: Enterprises with AWS governance needs
Azure AI Foundry
IaaSOpenAI and other models with enterprise controls on Azure.
Best for: Regulated industries on Microsoft cloud
Google Vertex AI
IaaSEnd-to-end ML platform — training, tuning, and serving on GCP.
Best for: Data science teams on Google Cloud
RunPod
IaaSOn-demand GPUs at hobbyist-friendly prices.
Best for: Fine-tuning and burst GPU workloads
Lambda
IaaSGPU cloud built for training and inference.
Best for: Serious model training runs
CoreWeave
IaaSHyperscale GPU infrastructure powering major AI labs.
Best for: Large-scale training and inference
Replicate
FaaSRun thousands of models via API, billed by the second.
Best for: Shipping model features without infra
Modal
FaaSServerless Python with GPUs — deploy functions, not servers.
Best for: ML engineers who hate DevOps
Cloudflare Workers AI
FaaSInference at the edge on Cloudflare's network.
Best for: Low-latency AI in web apps
Baseten
FaaSProduction model deployment with autoscaling and observability.
Best for: Serving custom models reliably
Roboflow
SaaSDataset labeling to deployed vision model in one platform.
Best for: Shipping computer vision fast
Ultralytics YOLO
OSSThe real-time object detection standard.
Best for: Defect detection, counting, monitoring
OpenCV
OSSThe foundational computer vision library.
Best for: Classical vision and preprocessing
Amazon Rekognition
PaaSVision API — faces, objects, text, moderation.
Best for: Vision features without training models
Google Cloud Vision
PaaSOCR, labels, and document understanding via API.
Best for: Document and image pipelines
PyTorch
OSSThe dominant deep-learning framework in research and industry.
Best for: Custom model development
TensorFlow
OSSGoogle's production-grade deep-learning ecosystem.
Best for: Mobile/edge deployment (TFLite)
scikit-learn
OSSThe classical ML toolkit — regression to clustering.
Best for: Tabular business problems
XGBoost
OSSGradient boosting that still wins on tabular data.
Best for: Scoring, risk, and forecasting models
MLflow
OSSExperiment tracking, model registry, and deployment.
Best for: Keeping ML projects reproducible
Weights & Biases
SaaSExperiment tracking and evaluation for ML teams.
Best for: Teams training models seriously
HF Transformers
OSSThe library behind most modern NLP — one API for thousands of models.
Best for: Any NLP task, any model
spaCy
OSSIndustrial-strength NLP pipelines — entities, parsing, classification.
Best for: Production text processing
OpenAI Whisper
OSSOpen-source speech-to-text that handles accents and noise.
Best for: Transcription without per-minute fees
AssemblyAI
PaaSSpeech-to-text API with summarization and sentiment.
Best for: Call analytics and meeting intelligence
Deepgram
PaaSFast, accurate realtime transcription API.
Best for: Voice agents and live captioning
Gymnasium
OSSThe standard API and environments for reinforcement learning.
Best for: Learning and benchmarking RL
Stable-Baselines3
OSSReliable implementations of the major RL algorithms.
Best for: Applying RL without reimplementing papers
Ray RLlib
OSSDistributed reinforcement learning at cluster scale.
Best for: Industrial RL — pricing, scheduling, control
Unity ML-Agents
OSSTrain agents inside 3D simulations.
Best for: Robotics and simulation-first training
Khanmigo
SaaSKhan Academy's AI tutor that guides instead of answering.
Best for: Schools and self-learners
Duolingo Max
SaaSAI conversation practice and explanations for languages.
Best for: Language learning at scale
Quizizz
SaaSAI-generated quizzes and lessons from any content.
Best for: Teachers and corporate trainers
Coursera
SaaSUniversity courses with an AI learning coach.
Best for: Upskilling teams affordably
Kaggle
DaaSDatasets, notebooks, and ML competitions.
Best for: Finding data and proving skills
HF Datasets
DaaSHundreds of thousands of ready-to-use ML datasets.
Best for: Training and evaluation data
Snowflake Marketplace
DaaSCommercial datasets delivered straight into your warehouse.
Best for: Enterprise data enrichment
Alpha Vantage
DaaSStock, forex, and crypto market data APIs.
Best for: Market dashboards and research tools
TradingView
SaaSThe standard for charting, screening, and trade ideas.
Best for: Technical analysis and watchlists
Kite Connect
PaaSZerodha's trading and market-data APIs.
Best for: Building broking-grade tools in India
Sensibull
SaaSOptions analytics — strategy building, Greeks, payoff charts.
Best for: F&O traders who want discipline
Screener.in
SaaSFundamental screening for Indian equities.
Best for: Long-term stock research
Alchemy
PaaSThe leading web3 development platform — nodes, APIs, tooling.
Best for: Building on Ethereum and L2s
Etherscan
SaaSThe Ethereum block explorer and contract verifier.
Best for: Auditing transactions and contracts
Chainlink
OSSDecentralized oracles connecting contracts to real-world data.
Best for: Smart contracts needing external data
CoinGecko API
DaaSCrypto market data across thousands of assets.
Best for: Portfolio and research tooling
Razorpay
PaaSIndia's leading payment gateway — UPI, cards, subscriptions, payouts.
Best for: Accepting payments in India
Stripe
PaaSGlobal payments infrastructure with world-class APIs.
Best for: International SaaS billing
Cashfree
PaaSPayments plus bulk payouts and verification APIs.
Best for: Marketplaces and lending flows
PayU India
PaaSEnterprise-grade payment processing in India.
Best for: High-volume Indian merchants
HubSpot
SaaSFree CRM with marketing, sales, and service hubs.
Best for: Inbound lead management
Apollo.io
SaaSB2B contact database with outreach automation.
Best for: Outbound prospecting
Mailchimp
SaaSEmail marketing with automation and AI content.
Best for: Newsletters and campaigns
Clay
SaaSAI-powered lead enrichment across 100+ data sources.
Best for: Personalized outbound at scale
n8n
OSSSelf-hostable workflow automation with AI steps — our automation backbone.
Best for: Business automation you own
Zapier
SaaSThe easiest way to connect 7,000+ apps.
Best for: Quick automations, low volume
Make
SaaSVisual automation with strong branching logic.
Best for: Complex flows without code
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