I wrote a Thunderbird extension (and my first one too!) that allows the display of all available about: windows in Thunderbird. Shredder Alpha 3 and above is required though. It is called ViewAbout and can be downloaded from Mozilla Add-ons.
Description of ViewAbout:
Enables access to various about: dialogs from the View menu.
Every available about: dialog can be viewed – about:buildconfig, about:config, about:crashes, about:credits, about:license, about:mozilla, about:neterror (seemingly useless) and about:plugins.
These windows can be closed using Ctrl-(or cmd-)w.
Try it and let me know how it is. I have also made ViewAbout’s AMO Dashboard public, so everyone can see just how many users need about:crashes or about:config and the like.
(Mark Finkle was a great help throughout the development period, so thanks, Mark!)

Komodo ViewAbout « Snippets code from my daily experience | 21-Nov-08 at 10:43 am | Permalink
[...] Filed under: Uncategorized — dafi @ 7:42 pm After reading ViewAbout post written by Gary Kwong I was curious to see what Komodo should have [...]
Smokey Ardisson | 22-Nov-08 at 12:37 pm | Permalink
Note that when you display about:license/about:licence, you’ll be displaying the wrong file for Thunderbird (unless Tb’s jar packing been changed subsequently); when I was working on auto-generating Tb’s license.html in bug 428144, Phil assured me that Tb would never want the correct version in the jar.
As a result, what you’re seeing in the viewer is probably a generic Mozilla Toolkit license, rather than the Thunderbird license. You probably want to disable about:licen[cs]e in your viewer, or load the stand-alone license.html file, or fix the build system to jar the right file and set up a chrome override like I did for Firefox and SeaMonkey.
James John Malcolm | 15-Dec-08 at 1:32 pm | Permalink
No statusbar? Would probably be handy…
(…and also – developers would notice that the statusbar isn’t Unified on the mac)
C@rb0n | 20-Dec-08 at 1:46 am | Permalink
Hi: the extension used to work great, but now when doing View –> ViewAbout –> {whatever} on Thunderbird Trunk builds, I get this in error console:
Error: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIWebNavigation.sessionHistory]” nsresult: “0×80004005 (NS_ERROR_FAILURE)” location: “JS frame :: chrome://global/content/bindings/browser.xml :: :: line 641″ data: no]
Source file: chrome://global/content/bindings/browser.xml
Line: 647
Gary Kwong | 01-Jan-09 at 4:07 am | Permalink
@Smokey: I’ll fix that in the next release, probably by changing the wording.
@C@rbon: I see the error too, though I’m wondering what could have gone wrong. It doesn’t affect the functionality of ViewAbout though, thanks for pointing it out..
Carl Umpin | 14-Jan-09 at 11:40 am | Permalink
What an intriguing theme. I’m emailing this to every individual that I know. This is just absolutely wonderful.