BrewScript is a web application for helping homebrewers make all the necessary calculations for their brew day.
The application is written primarily in JavaScript with some non-critical server-side PHP for data storage in MySql. Recipes can also be Imported and Exported via XML.
C# Website system. This is going to be the "Newer" Internet, and even has a custom theme system. This is going to let users do "anything" that won't harm the client computer in any way.