Firefox just got better: Tree Style Tab

(tags browser, Firefox, customize)

For years I have been using Sleipnir just for the hierarchical tabs, but now Firefox has this functionality in multiple different ways. Earlier this month I started using Tab Kit, but it was just a disorganized mess because it was trying to handle both the tree-view and the normal tab list, with nonsensical grouping options and no manual rearranging. But then I found Tree Style Tab (ツリー型タブ), which is pretty much what I want. Hierarchical, manual tab group rearranging, fast. Now I will be opening Sleipnir less and Firefox more. Coupled with the del.icio.usBookmarks extension, the Session Manager extension and FEBE user setting/extension backup extension, I finally will enjoy Firefox more.