Just to let you know, per you request I've ported OpenList to the WebExtension format (so that it'll work other browsers as well). It's really a 1:1 port, nothing removed, nothing added.

It's available on Firefox Add-ons: https://addons.mozilla.org/en-US/firefox/addon/openlist/

The sources are available on my fork: https://github.com/Outpox/OpenList