Platform similar to SubText that allows teachers to publish PDF, ePub, Word and Excel & classes / students can read collaboratively on any device. Documents are published using HTML5 = iPad friendly.
Flashcard Exchange works much like Quizlet but with a slightly cleaner interface. Students can create flashcards with images or their own text and then test themselves. Flashcards can be published and shared as well. It does work with some apps for review on mobile devices.
The Virginia Department of Education helped to create this list of apps for students. You can download them from the Apple App Store. Some of them include digital texts from Pearson publishers.
Animoby is a sort of screencasting tool, but not really. The idea is to instantly create and publish products that include voice, drawings, and images.