This is a little app I created to make comparing changes between live and staging versions of web sites easier for some of our testers and us poor dev's who get told something doesn't look right on the test server but looks fine on the dev box ("it works on my machine!").
Its pretty simple, all it does is take two URL's from the user and then shows the user two embedded browsers in the application. What ever the user clicks on in the top browser gets browsed in the bottom URL. So for example if I put the URL http://www.conchango.com in the top browser and then http://testcomsite in the bottom URL browser. If I navigated to say http://www.conchango.com/Web/Public/Content/AboutUs/AboutUs.aspx the browser below will navigate to http://testcomsite/Web/Public/Content/AboutUs/AboutUs.aspx , or attempt to load the same page on that site.
My latest version of this application now includes a plugin that enables users to browse Mozilla and IE pages side by side using a Mozilla ActiveX plugin I found here. I will shortly be uploading the binary and code for this simple app after I've packaged it up. If anyone has found a more up to date Mozilla ActiveX plugin that is more recent than 1.7 I'd love to hear from you.