ThinkCascade is a paradigm shift from the current methods of style sheet development. It combines the flexibility of a text editor with the user-friendliness of a spreadsheet. You can now make use of variables and expressions instead of entering style values directly, just like a spreadsheet. Things like indenting and CSS syntax are now a thing of the past. Styles are displayed in a clean, collapsible and attractive grid. You can apply different styles to different media types on a per style basis, as opposed to fumbling with @media blocks. It uses a clever profile system to eliminate the need for CSS hacks. You can apply different styles to different visitors based on almost anything like their browser name, browser version, operating system, language, screen resolution, whether the Adobe Flash player is available, and more. It's free for internal web sites and non-commercial use. Commercial users will have to buy.