Unfortunately WxWidgets are too buggy on every platform, and bugs are different accross platforms.

I have several friends trying Wx for their commercial apps, all of them abandoned it due to bugs and lack of features.

Very nice move!

This also means serious damage to RIA aproach too. Without QT, it was very difficult to create cross-platform apps (running on OSX, Linux and Windows).

Java was an option, but too few people used it for small apps like shareware utilities.

RIA was an option, but their are immature and do not allow to implement a lot of things.

Gtk was another ugly option.

Also running web server locally (e.g. with web server for CD and USB drives ) was elegant option for some cases when UI is rendered by web browser and backend is implemented using server-side programming language like php or python running locally.

Now it seems a lot of shareware authors will start using QT even for developing Windows-only apps. This means a lot of new apps that are stable and cheaper to develop will enter the market soon. Hopefully most of those apps will probably be ported to OSX (and even Linux) by their authors afterwards.

I hope they are running Wiki directly from CDs. There are some web servers for running sites from CDs, some of them even allow to start web server and php, perl, python, java server-side scripts directly from the same cd on Windows, Linux and Mac OS X.