Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
This extension is for those TB3 users who want the multiple-columns view that TB2 allowed
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
Collections are groups of related add-ons that anyone can create and share.Explore Collections