Toolbar Buttons
Toolbar Buttons is a button set for several applications including Firefox, Thunerbird and Sunbird. It boast over 100 buttons for Firefox alone. This easily makes it the largest set available. It does everything from opening the Add-ons manager, bookmarking pages or translating them to restarting the application or disabling JavaScript. There have been over 1 million downloads to date.
MinimizeToTray Plus
MinimizeToTray Plus will minimise the current window to the system tray for Firefox, Thunerbird and Sunbird among others. It also has a selection of options including ones to enable it to minimize the window instead of closing, open the application at system start-up.
Xrl.in
Xrl.in is a link shortening service run along side Codefisher.org. It has a companion Firefox extension Xrl.in Tiny Links that is intended to be small, fast and intuitive.
Pastel SVG Icons
Pastel SVG is an icon set based on the popular silk icons found as FamFamFam.com. It uses the same style, so some of the icons are almost identical. The goal of the project is to recreate the entire set in a full range of sizes while also adding many icons that we think the original set is missing.
Sharp Color Picker
The Sharp Color Picker was my entry for 10k Apart. It is a fairly full featured color picker with a color wheel, and HSV panel, starting palette and text boxes to retreive and modify various attributes of the color. It also can remember colors in a custom palette.