Ganjoor vs Gutendex

REST API behind the Ganjoor open-source classical Persian poetry archive, covering hundreds of poets (Hafez, Rumi, Ferdowsi, and more) with full poem text, biographical metadata, manuscript images, and audio recitations. Every read endpoint (poets, poem categories, verses) is fully keyless; only the write endpoints used by the project's own contributor tools require an OAuth2 bearer token.

Gutendex is a free, open-source JSON API — built independently of Project Gutenberg — that wraps its roughly 75,000 public-domain ebooks with searchable, paginated metadata: authors, subjects, bookshelves, languages, and direct links to every available download format from plain text to EPUB and Kindle. No account or key is needed to query it, and the project's own source enables cross-origin requests from any domain rather than restricting them. Anyone needing sustained high-volume traffic is asked to run their own instance of the open-source server instead of hammering the public one.