Review for uBlock Origin by AxelMel
Rated 3 out of 5 stars
Source code link still won't load
Notabug.org seems to be working, but if you right click the download button for the addon and click "save link as". It will give you an xpi that you can open like a zip file. The source code is there.
To create your own collections, you must have a Mozilla Add-ons account.