search engines and collections of links

• 2020ok - directory of free online books
• The Assayer: collection of reviews to freely available texts, including Mathematics (there are no much reviews, so currently this is merely a (big) collection of links)
• dmoz.org: math texts section
• [!] eboogle
• [!] poiskknig.ru - a sort of meta site with search for links to (mainly Russian) books (not exhaustive!)
• [!] Ulf Rehmann (Digital Mathematical Library): free (most of them listed in other repositories mentioned here, conveniently arranged alphabetically) and google books (non-exhaustive?)

separate sources

• Alexandria eLibrary (most links are broken)
• [!] AMS: list of online books
• archive.org (aka The Internet Archive): Mathematics section of Million Books Project (small number of XIX-early XX centuries texts, some of them classical)


• Biblioteka Wirtualna Matematyki: Monografie Matematyczne (Banach, Kuratowski, Sierpinski, Mostowski and other classics)
• Digital Library of India (mainly old texts)


• ega-math.narod.ru
• eqworld
• EMS: lists of online books and proceedings
• [!] Euler's Library (LOMI)


• Gallica (Bibl. Nat. de France)
• [!] Historical Collections (XIX and early XX centuries) at Cornell, Göttingen, and Michigan; search across all 3 repositiories.
• [!] Ikhtik Library: [ihtik.lib.ru] [ihtika.net] (big collection of math, physics, biology and philosophy books including Einstein & Infeld, Poincaré, Aristotle, Russell, Bohr, Heisenberg, Wiener, Leibniz, Descartes, Shafarevich)
• [!] Kolkhoz mirrors/snapshots:
  • lib.homelinux.org [slow, unstable and semibroken]
  • Belorusskaya nauchnaya biblioteka [slow and incomplete]
  • eknigu.com [semibroken] brilliant translations
  • whitelist2007.narod.ru - very small subset, with rapidshare links.
  • Grodno State Univ. - old mirror; no online access, but promise to sent 1 book per week by email
  outdated Kolkhoz indices


• Franz Lemmermeyer's collection of lecture notes on Algebra, Algebraic Geometry and Number Theory: [Bilkent] [Heidelberg]
• [!] lib.mexmat.ru
• Librusec


• [!] MCCME: free books at MCCME & Independent Univ. of Moscow (all in Russian):
  courses, many of them with lecture notes and drafts;
  books (old pages: recent books, old books)
  list of publications of MCCME


• O'Reilly:
  • Safari
  • Open Books Project
  • CD Bookshelves: [hackemate.com.ar] [unix.org.ua] [cs.ait.ac.th [ as of Sep 22, 2006]]
• Open Library
• Open Russian Electronic Library


• Rancho - some badly organized seemingly big collection of books (subset of Kolkhoz?)


• Samizdat Press
• ScienceDirect (Elsevier; semibroken, search is disfunctional!)
• [!] Springer
• William A. Stein: scanned books and articles mainly in Number Theory and Algebraic Geometry.


• Boaz Tsaban: textbooks in Hebrew


• The Universal Digital Library

• some of the books and book archives are solely of historical interest
• Biology books:
  • Proprius (in Russian).
  • NCBI NIH bookshelf
  • (very) Russian forum on ru-board.com [spam-linked registration required]
• few physical gems from "Bibliotechka Kvant": [vivovoco] [lib.mexmat.ru] (in Russian)