Google Books Alternatives

Google Scholar is a freely accessible web search engine that indexes the full text of scholarly...

Scinapse is a free, nonprofit, Academic search engine for papers, serviced by Pluto Network.

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Scopus is a bibliographic database containing abstracts and citations for academic journal articles.

An academic search engine that utilizes artificial intelligence methods to provide highly relevant results and novel tools to filter them with ease.

Biohunter is a one-stop portal for literature search, batch-download PDFs and reference manager

Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Open Source

Microsoft Expression Web, part of Microsoft's Expression Studio, is an HTML editor and general...

WorldWideScience is an all in one global science gateway service that is accelerating the scientific discovery and progress with databases and portals.

PubMed comprises more than 29 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.

Science.

Access scientific knowledge, and make your research visible

Educational Resources Information Center is all in one database of indexed full-text education literature and resources that is authoritative.