Add-ons
XPCOMViewer 1.4.2.1-signed.1-signed Requires Restart
by Ondřej Doněk
XPCOMViewer is tiny tool for exploring XPCOM components.
About this Add-on
XPCOMViewer - Explore world of XPCOM!
XPCOMViewer is tiny tool for exploring XPCOM components.
To create your own collections, you must have a Mozilla Add-ons account.
![[Warning]](https://addons.thunderbird.net/static/img/developers/test-warning.png?b=58a99cbb-667a0970)
Some add-ons ask for permission to perform certain functions. Since you’re in control of your Thunderbird, the choice to grant or deny these requests is yours.
Please note this add-on uses legacy technology, which gives it access to all browser functions and data without requesting your permission.
