Coming soon for Windows, macOS & Linux
The modern alternative
to Calibre.
Everything you need to organize, convert, and read your books in a fast, modern interface.
App in development
Everything you need to organize, convert, and read your books in a fast, modern interface.
Liber is designed to handle every aspect of your reading journey.
Instantly find any book in your library. Missing a classic? Browse public-domain sources like Project Gutenberg — or add your own — and download books right into Liber.
Convert any ebook to the perfect format for your device — EPUB, MOBI, CBZ, PDF and more — then send it effortlessly to your eReader in one click.
A distraction-free reading environment. Customize themes, adjust typography, and seamlessly add highlights and notes as you read.
Get personalized book recommendations, generate smart tags, summarize books, and chat with your library to uncover key ideas.
Plug in your Kindle and Liber automatically syncs your reading progress and highlights back into your library.
Convert hundreds of books to EPUB, AZW3, PDF, MOBI, CBZ, and more instantly. (Single-book conversion is free).
10 GB of secure backup. Your library is fully encrypted, completely private, and can be recovered at any time if you lose your device.