Comrade:Cassette/sandbox/Online libraries

Website Content Formats offered
http://www.marx2mao.com/ only from Marx to Mao as the name implies but also has some stuff on other topics. Better quality than MIA. All works from Marx&Engels, Lenin, Stalin and Mao are available in their respective Collected Works, which can easily be downloaded. Plain text, PDF.
annas archive All kinds of books in many different formats mostly epub and pdf PDF, EPUB, MOBI, and others
http://ciml.250x.com/archive/index.html never tested it, only has Marx, Engels, Lenin, Stalin, Hoxha (it's a hoxhaist website) Plain text, PDF
https://redsails.org/categories our comrades at Red Sails also have a library (look under Authors); they also say where they source their works from. Plain text
https://openlibrary.org they have books on everything and from everyone, including marxist authors. However they have to use a "borrowing" system by law, and you have to make an account. Maybe use them to find a book, then download it from libgen. Plain text, PDF
https://www.redstarpublishers.org/ lots of different books and documents PDF
https://www.bannedthought.net has mostly documents about countries, but some books can be found there as well PDF
http://hiaw.org/defcon6/works/cw/index.html Has the M&E letters which are otherwise copyrighted by a patent troll. Plain text
https://espressostalinist.com/the-real-stalin-series/ this page collects excerpts and collides them into topics; you can look for the original book on libgen. Could help you find books to add. Plain text
http://www.desmondgreavesarchive.com books from Desmond Greaves, Irish historian on communist figures from Ireland. PDF
http://www.korean-books.com.kp/en books from the DPRK, in English PDF
https://www.michael-parenti.org/articles Articles from Michael Parenti, from his official website Plain text
From Marx to Mao All works from Marx&Engels, Lenin, Stalin and Mao are available in their respective Collected Works, which can easily be downloaded from marx2mao for example as PDFs. PDF
leninist.org haven't used it yet
Bannedthought library It's known to be Maoist but still has some good books
marxist.org They are run by trots and are known to edit stuff to fit their bias -- notably in Mastering Bolshevism from Stalin, whole sections are missing and they give the work a completely different name. They've also removed portions and footnotes from Progress Publishers (Moscow) books. HTML, PDFS
Memory of the World Library A general library but a fellow comrade used it to find some works that weren't in Anna's Archive PDF Epub