Open textbooks for post-secondary levels
Here shows the websites offering open textbooks at post-secondary levels. You may choose the websites based on the disciplines they purposed for. Here is a chart helps you to source open textbooks from these websites:
| Icon | Meaning |
 | Many resources of the designated category are available (as at 30 July, 2013) |
 | Some resources of the designated category are available (as at 30 July, 2013) |
 | No resource is available in the designated category (as at 30 July, 2013) |
The table below is for reference only. The availability of resources in these websites may subject to change.
(as on 31 Oct, 2013)
| Open textbooks (OTB) Projects | Discipline | ||||||
| Arts & Humanities | Science & Engineering | Information Technology | Business | Social Science | Education | Others | |
| College Open Textbooks http://collegeopentextbooks.org/ |  | | | | | |  |
| Connexions http://cnx.org | | | | | | | |
| University of Minnesota, Open Academics University of Minnesota, Open Academics https://open.umn.edu/opentextbooks/BookDetail.aspx?bookId=40 | | |  | | | | |
| Flat World Knowledge http://www.flatworldknowledge.com | | | | | | | |
| Open Access Publishing in European Networks http://www.oapen.org/home | | | | | | | |
| Boundless Open Textbooks https://www.boundless.com/ | | | | | | | |
| Intech http://www.intechopen.com/books | | | | | | | |
(as at 30 July, 2013)