Category directory
Browse AI categories and the company hubs inside them
Track 17 active category hubs across 263 independent AI companies. Use this page to choose the right slice of the market before you open company pages or the full category signals.
AI Infrastructure and Foundation Models currently sit near the top of the category index by package demand. Use the directory to choose the right category hub first, then open company pages or the full category signals.
Where to start
Open a category hub, not just a category name
Each hub gives you leading companies, current signals, and the full company list for that slice of the market.
AI Infrastructure
Start with Hugging Face, Pydantic (Samuel Colvin), and Weaviate.
Developer Tools
All category hubs
Browse the full coverage map
Sort by downloads, company count, funding, or discussion signals depending on the question you are asking.
Search by category name or by one of the companies already leading that category.
Currently sorted by Downloads. Use downloads for the strongest adoption signal, or switch to coverage, funding, or discussion volume.