Add-Ons & Download Managers in Sidebar
Allows the Add-Ons and/or Download Managers to be opened in a sidebar instead of pop-up window

---

Tweak Type:	Display
Fx 2:	YES
Fx 3:	YES
Fx 3.5:	YES

1. Click the New Bookmark Button
2. In Name field enter what you want to call this bookmark (Add-Ons or Downloads)
3. In the Location field copy/paste the appropriate address below:
   • Add-Ons: chrome://mozapps/content/extensions/extensions.xul
   • Downloads: chrome://mozapps/content/downloads/downloads.xul
4. Check the box: Load this bookmark in sidebar
5. Click OK

To make it even easier to access the Add-Ons & Download Managers, you can drag the bookmarks from the Bookmark Menus onto your Bookmark Toolbar.

Source