HotModule is the name I publish my Windows Phone apps under. Currently I have a couple of apps live on Marketplace, a couple going through certification and a couple more being built.
Here is my Marketplace profile: http://www.windowsphone.com/en-US/publishers/HotModule
Here are my apps:
PATH Traveller is a beautifully simple and app to tell you where your nearest station is, when the next PATH Trains are coming. It has the entire schedule on your phone so works fine without a data connection. I automatically adjusts for holiday schedules. It allows you to look up trains for any station/time/day combination. Also lets you see each station on a map and can provide driving and walking directions from you current location.
Converts Currencies and Units easily and simply. Currency rates are updated daily. There a lots of unit categories to choose from with a big selection of units. If there are units or categories that that app doesnt have then you can add them to the app.