Basically this embeds the edu-apps.org interface into various LMSs to make it easier to configure LTI apps that are available on that site.
Right now it's been configured to work in:
- Canvas
- Moodle
- CourseSites (Blackboard)
To try it out, load the .crx file in Chrome to install the extension. Do this by going to Tools -> Extensions and then dragging and dropping the .crx file onto that page.
Then go to the LTI config page in a supported LMS and watch the magic happen.