This may be the single greatest tool ever made for adding to Internet Explorer’s functionality. Add-In Express allows developers to use a GUI based environment to build test and deploy IE addons. Whoa. Normally it is done with a ton of C++ code and etc. and this tool really helps to cut the “crap” so to speak. You still have to do programming logic in C++ usually but heck more than half the battle is just getting the dang interfaces all lined up and working. This tool ROCKS!