I'm an independent developer that is looking to get into the hosting software business. What I'm curious to hear is what sort of software you would consider purchasing that doesn't exist, isn't very good, or is too expensive. My aim is to work on specific types of web-based applications, instead of an all-inclusive control panel system or something along those lines. If you could respond with something along the lines of "I would like a customizable shopping cart system that supports PayPal", that would be very helpful. Any feedback you can offer is greatly appreciated.