OpenLibro: PDF Books

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About this app

OpenLibro — Free, legal PDF books for learning

OpenLibro is a free digital library of books you can legally download and read. Our catalogue focuses on programming, computer science, artificial intelligence, data science, engineering, cybersecurity, mathematics and more — all distributed under open licenses.

★ 100% free, no subscription
Every book is available at no cost and without hidden fees. OpenLibro does not host copyrighted material without permission: titles are published under open licenses (Creative Commons, MIT, Apache 2.0, GPL, GFDL, public domain, Open Access and others) or shared with the express permission of their authors or publishers.

★ A curated catalogue
Hundreds of titles from universities, public institutions and independent authors. Every book page includes useful details: author, publisher, year, pages, reading time, level (beginner, intermediate, advanced), language and license.

★ Find exactly what you need
• Browse by category, level, language and author
• Sort by newest, top rated or most downloaded
• Search the whole catalogue
• Discover popular authors and related books

★ Your library, everywhere
Sign in with Google and keep your library in sync with openlibro.com:
• Save favourites and mark books as read
• Track your reading progress
• Download PDFs to read offline
• Rate and comment on books, with the same rules as the website

★ Read your way
Download any book as a PDF and read it offline, or open it online. The reader remembers where you left off.

★ New book alerts
Get a notification whenever a new book is published.

★ Available in Spanish and English
The app adapts automatically to your device language (Spanish or English), and you can change it anytime in Settings.

OpenLibro is an independent project. If you are an author or publisher and want your book included — or removed — contact us.

Website: https://openlibro.com
Contact: [e-mail]

What's new:
What's new in OpenLibro 1.4.0:

• The app is now available in English (auto-detection + language selector in Settings)
• In-app updates: get notified when a new version is ready
• Improved library sync with openlibro.com (favourites, read books, progress, downloads)
• New author profiles with bio, photo and links
• Browse by level, language and author; sort by top rated or most downloaded
• Performance and stability improvements

What’s new

What's new in OpenLibro 1.4.1:
• Sign in with Google and sync your library
• Ratings and comments with the website rules
• Author profiles with photo and bio
• Explore by level, language and author; sort by rating
• New book alerts
• Expanded book page: table of contents, FAQ and source panel
• Notification permission fixed and instant comments
• Better download bar and automatic updates
• 100% free, no subscription