Connect with us and help expand our open access collection.

We're always looking for open access textbooks to add to our lists. If you have a suggestion, please let us know. Suggested texts should be complete textbooks (as opposed to course notes), preferably with exercises. It is best if they have been used as course texts for multiple courses (i.e. at different universities), contain relatively few errors, and are updated regularly (when errors are found).

We typically link to the page maintained by the book's author, in order to properly credit the author and to point to the most up-to-date version of the book. However, we can also host textbooks directly on our site, if the author does not wish to maintain their own webpage.