The following list was generated by a Thunderbird extension (that I've tweaked for use here). The extension is listed in the list it created. And the extension works with Firefox, too. See my Firefox extensions here.
Application: Thunderbird 2.0.0.5 (2007071612)
Operating System: Linux (x86-gcc3)
- Display Mail User Agent Extension
Displays the news/mail program with which the selected mail or post was written
- Extension List Dumper
Dumps a configurable list of the installed extensions to a text, an HTML file or to the clipboard.
- Maximize Message Pane
Maximize the message pane by collapsing the thread pane.
- MessageFaces
Displays "face" images in the message header.
- Quote Colors
Configure text and background colors for different quote levels in mail/news messages,
replace the vertical bars on left margin that represent the traditional ">" quote level
indicators with those traditional indicators, and more.
- Reply In Group
Adds "Reply In Group" toolbar button to the main window.
- Talkback
Sends information about program crashes to Mozilla.
- View Headers Toggle Button
Toolbar toggle button for viewing normal headers or all full headers.
- XNote
Add notes, locally, to emails and news posts.