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Library Genesis is a scientific community targeting collection of books on natural science disciplines and engineering.

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Vienna Symphonic Library creates high-end orchestral sample libraries and software for professional music productions.

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LibreTexts is developing the next generation of open-access texts. Open. Free. Accessible to all.

Need writing help for your college essays and research papers? Your search ends here. IPL provides suitable samples for a wide array of topics, so you can write a top-notch essay every time.

The Jewish Women’s Archive documents Jewish women’s stories, elevates their voices, and inspires them to be agents of change.

Wolfram Library Archive has thousands of downloadable resources for Mathematica and other Wolfram products, collected over the full history of Wolfram Research

IEEE Xplore, delivering full text access to the world's highest quality technical literature in engineering and technology. | IEEE Xplore

The most complete library of Marxism with content in over 60 languages and the works of over 700 authors readily accessible by archive, sujbect, or history.

Encyclopedia of Jewish and Israeli history, politics and culture, with biographies, statistics, articles and documents on topics from anti-Semitism to Zionism.

The World Digital Library provides free access to manuscripts, rare books, maps, photographs, and other important cultural documents from all countries and cultures, in Arabic, Chinese, English, French, Portuguese, Russian and Spanish.

One of the largest and most authoritative collections of online journals, books, and research resources, covering life, health, social, and physical sciences.

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 591 billion archived web pages.