I used to help maintain Vimperator which has now stopped development due to Firefox addon API deprecation. Tridactyl however has proven to be a worthy successor! The user experience is great, and long time users of similar addons such as Pentadactyl should feel at home. Due to the nature of changes in WebExtensions and its earlier and current limitations I'm really excited to see it come this far!

Importantly, the project also has great development momentum with lots of features being added or bugs being fixed all the time. This is truly a breath of fresh air in the enthusiast community of power users looking to vimify or otherwise enhance their browser experience, which for some time has been stale with the foreshadowing of the deprecation of XUL/XPCOM and ultimately the need to port or discard lots and lots of old code.

Remember to check out #tridactyl on the many platforms its available, including the ever present Freenode. More information can be found in the README on their GitHub project.