Fred Karl

About me

Developer Information
Name Fred Karl
User since October 17, 2007
Number of add-ons developed 0 add-ons
Average rating of developer's add-ons Not yet rated

My Reviews


Slowed me down Rated 2 out of 5 stars

It works well enough, although I'd like to see both more browser functionality built-in (e.g., ability to use Diigo toolbar) and an easier way to choose between viewing in a TB tab vs a browser tab.

But before I disabled this add-on, TB was using over 100% of available CPU cycles. And boy! Was my computer running hot! I disabled the app, and now TB is mainly using about 25% of CPU cycles.

Similar problems have been reported for a similar app, WebApp Tabs:

Allow HTML Temp

A useful tool that can use better integration Rated 4 out of 5 stars

This is a useful tool that makes it easier to keep HTML off and thereby protect oneself from various forms of spyware. But I'd like to see better integration with TB's junk filtering and untrusted image loading features. If junk detection declares an email as a false positive, you should be able to (1) declare it not junk, (2) download images, and (3) view as HTML in one click. Instead, right now you have to do each thing separately. I realize some won't want to do this, but I'd like this add-on to have the option of doing all three steps at once.

This review is for a previous version of the add-on (3.0.3). 

Evernote Web Clipper

Won't Install in Thunderbird Rated 2 out of 5 stars

On a Mac running TBird 3.0.1, installation says it is not compatible with Thunderbird 3.0.1. But the add-on's page says it is.

(I use this add-on very successfully from Firefox and Thunderbird on a PC.)

This review is for a previous version of the add-on ( 

It's All Text!

Could be better Rated 4 out of 5 stars

This is a good plugin EXCEPT: It installs an EDIT button for the text window, and right-clicking the button brings up a menu of file types to edit. One would think choosing from the menu would start up different editors depending on the file type. Nonetheless, the application only allows one editor. Apparently it just uses this editor for different kinds of files. The developer suggests supplying a script or CMD file to do more complex things, but I think the application should allow individual editors to be associated with individual extensions.

This review is for a previous version of the add-on (0.8.2).