What do you use your iPad (or iPhone) for?
Ever had a need to edit text files or code?
Brett Terpsta maintains a list of iOS text editors and features that is nothing short of phenomenal. Titled iTextEditors, this webpage lists each text editing app in a dynamically filterable matrix of features.
Touching (or clicking on) the app name opens a pop-up window with additional information not captured by the feature matrix. Touching the More info … link takes you to a review of the app.