Skip to content

extra credit Search 85,062 technologies ⌘K

How it works Catalog

Download for Mac

Technologies
APIs and services
Books

Greenlit Books

Catalog of practical AI books with search, series, glossary and a claim ledger

Official docs↗

More in Books

Bible-api Free Bible API with multiple languages
BookRank Book rankings from open reader ratings: books, series, reading orders and authors
British National Bibliography Books
Crossref Metadata Search Books & Articles Metadata
Ganjoor Classic Persian poetry works including access to related manuscripts, recitations and music tracks
Google Books Books
GurbaniNow Fast and Accurate Gurbani RESTful API
Gutendex Web-API for fetching data from Project Gutenberg Books Library
KDP Intelligence KDP niche demand scores, competition analysis and revenue estimates
Open Library Books, book covers and related data
Penguin Publishing Books, book covers and related data
PoetryDB Enables you to get instant data from our vast poetry collection

Learn Greenlit Books from your own work

Extra Credit turns the code your agents write into short lessons, and outlines the official docs the first time your work uses it.

Download for Mac

A Mac app that turns the code your agents write into short lessons.

Catalog updated Nov 5, 2026.

Product

How it works
Catalog
Download for Mac

Data sources

endoflife.date
Simple Icons
Package registries
Official documentation

Docs outlines list section titles and link to each technology's official documentation, which belongs to its authors. Trademarks and logos belong to their owners.

↑↓ move ↵ open