The addon "Tab Kit" is not compatible with GNU IceCat 17 & 24 (The only ones that I have tested it with) and the author has seemed to disapear as well. There is a TabKit 2nd Edition that is compatible with those versions and it is licensed under the GPLv2.
Links to addon page: http://code.google.com/p/tabkit-2nd-edition/ https://addons.mozilla.org/en-US/firefox/addon/tabkit-2nd-edition/ Also this addon which is not on the list has a custom license: MPL 1.1/GPL 2.0/LGPL 2.1 Link to addon: https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/ Link to license: https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/license/0.14.2014051101 I wonder if that addon is okay to add to the list? I'm not sure though. Thank you for reading! -- http://gnuzilla.gnu.org
