Bookwyrm - foss federated alternative to goodreads
Reading Length - How long will it take to read that book?
StoryTerra.com - an interactive map where you can explore books, movies, games, and historical events by location and time
WhichBook.net - Book recommendations rated by readers, not robots. Pick a mood and discover great reads.
Bookmarking
LinkWarden - Bookmark manager that backs up every page in multiple formats, including full HTML content, ensuring you always have access to the original content. It also allows annotation.
BookMarkIt - Bookmark, Categorize, and Favorite your websites.
Wallabag - Save and classify articles. Read them later. Freely.
Faved - self-hosted solution to store, categorize, and access your saved web content and links from anywhere.
Brace.to - helps you save links to everything and visit them later easily, anytime, on any of your devices.
Foliate - a beautifully crafted eBook reader. The developer has put a lot of effort in ensuring its easy to navigate around eBooks. Range of features with a distraction-free reading experience that lets the interface fade out of view to enable the reader can concentrate on reading.
KOreader - KOReader is a document viewer for E Ink devices. Supported fileformats include EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP files. It’s available for Kindle, Kobo, PocketBook, Android and desktop Linux.
Inventaire - Keep an inventory of your books and of what can be done with them (Lending, Gifting, Selling). Share it with your friends and communities. Remember the books you lend or borrow.
Komga.org [software] - A media server for your comics, mangas, BDs, magazines and eBooks
OpenLibrary - Millions of ebooks and audiobooks available to borrow through controlled digital lending. The ultimate goal of the Open Library is to make all the published works of humankind available to everyone in the world.
Hyperlegible Fonts - free, easy to read fonts from the Braille Institute
Liblouis [software] - The Liblouis software suite provides an open-source braille translator, back-translator and formatter for a large number of languages and braille codes.
DangerZone.Rocks - Take potentially dangerous PDFs, office documents, or images and convert them to safe PDFs.
Xikipedia.org - is a pseudo social media feed that algorithmically shows you content from Simple Wikipedia. Demonstrates how even a basic non-ML algorithm with no data from other users can quickly learn what you engage with to suggest you more similar content. Also functions as an educational alternative to doomscrolling. No data is collected or shared here, the algorithm runs locally and the data disappears once you refresh or close the tab.