Some 100% free and legal alternatives to en.bookfi.org
- http://freescience.info/index.php you find *a lot* of free ebooks
- http://www.e-booksdirectory.com/ another fantastic website with ebooks free-of-charge!
- http://freecomputerbooks.pickatutorial.com/ a new entry. It is specialized on computer science
The best en.bookfi.org alternatives …
In this case, here are the alternatives to library.nu you were looking for…. and if you know other links, just send me a message or leave a comment and I will update this post!
http://mirknig.com (in Russian, but typing something in a search field should not be a problem … )
http://lib.org.by/ It hosts books listed by category. Partially in Russian! (but you can translate the whole website with google translator … )
http://mirtitles.org/ specialized in the MIR titles (excellent collection of science books of the Soviet Union). An absolute must!
http://gen.lib.rus.ec/ (search engine)
http://www.freeetextbooks.com (login required, torrents)
http://www.textbooknova.com/ (login required, torrents)