A pluggable search engine designed to find alternative copies of textbooks. Allows you to plug in a python module that provides textbook data for your institution, then indexes that data in elasticsearch and lets people search for books. It will try to find alternatives through various means. At the moment it only searches the Internet Archive, and Open Library, however the plan is to refine it to find better matches.
The code is available under the GNU Affero General Public License. This means you must make any changes you make available if you run it on your own server and allow people to use it, in addition to the regular requirements of the GPL. See here for more info.