Hi Bill! I'm Esther, your JavascriptFirewall fan number one! (best add-on out there!). And now I'm testing your VerticalTreeTabs (very lightweight and nice as JavascriptFirewall).

But I have two questions, and couldn't find your GitHub repo for VerticalTreeTabs. So, sorry, please allow me to ask here in my review:

1) Are you planning to add tab-context-menu for each tab inside the SideBar?

2) Are you planning to add more tab status showed inside SideBar? (just a different background-color will be enough). In general, as tab status shown inside sidebar, I believe will be enough different background-color for: Unloaded, Loading, Loaded, Discarded and Selected.

In order to adopt your VerticalTreeTabs, I just need the two requests above. Both requests are a must!
I have not more requests... your VerticalTreeTabs is wonderful.

Thank you!

This rating is based mostly on the source code, rather than the usability. This add-on doesn't fit with my workflow, but none do. I'm the kind of guy who writes custom functions in my ~2,000-line vimrc, but I've never written a browser add-on. This is just a beautiful, simple starting point to getting a browser to act reasonably.

But the usability is pretty limited, as is. You can't create new tabs from within the sidebar, and typing “ctrl-t” puts the new tab at the end of the list, at the top level of the hierarchy. Also, you cannot drag a tab such that it becomes the sibling of the last tab within a level—that is, you can drag a tab so that it has the same level as the next pre-drag tab, or so that it is the child of the previous pre-drag tab, but nothing in-between.