About this Collection
Add-ons that work on SeaMonkey
43 Add-ons in this Collection
View HTTP headers of a page and while browsing.
Custom Buttons by Yan, cubegm, others
Gives a possibility to create custom toolbarbuttons...
Add more items to Add-ons Manager context menu.
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.
Pretty-prints JSON content in the browser for easy, unobtrusive viewing.
Install Browser Extensions straight from GitHub Repositories
Scriptish by Erik Vold, Nils Maier, others
The greatest user script engine on the Internet (a fork of Greasemonkey).
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Adds extension options dialogs to the Tools or Titlebar menu and includes toolbar icon.