Springer offers access to over a million open access resources, including journal articles, book chapers and complete e-books. These can be found via:
To access open access resources exclusively you need to remove the "Include Preview-Only content" option:
The Open Research Library offers access to more than 20.000 E-Books within topics such as economics and history but also design, games, music and (performing) arts.
Access the Open Research Library
The content of the Open Research Library can be searched via standard search as well as advanced search. It is also easily possible to navigate by topics and download books from there.
The Directory of Open Access Books offers access to almost 30.000 scientific, peer-reviewed e-books.
Access the Directory of Open Access Books
The Directory of Open Access offers content in subjects such as economics and business, law, politics, statistics or social sicences and many more.
IntechOpen offers moreo than 4700 peer-reviewed e-books. These can be accessed here:
IntechOpen's content can be browsed or searched: