ClassDroid is an application designed for Android-based smartphones. It lets you take a picture of the student's work, or of the student, or anything else,  and instantly upload it to the student's on-line portfolio. 


ClassDroid is available for free from the Android Market. According to Johnny McClear, the app "supports images being stored on the wordpress site which can be accessed through a web browser on any web-enabled device. Parents and pupils can then view their work and grades online."


UPDATE
ClassDroid might be a great app for the new Android-based Galaxy Tablet:


[Image]
Credit: Reuters/Thomas Peter
Samsung launches Galaxy tablet for U.S. market (Reuters, 9/16/10)
SAMSUNG:  Do More on the Go with the GALAXY Tab


Here is a demo video of ClassDroid:


PrimaryPad is a "web-based word processer designed for schools that allows pupils and teachers to work together in real time". 

Primarypad - Etherpad Guide from ian addison on Vimeo.

PrimaryPad is a clone of EtherPad, a web-based collaborative word processor application that is now part of Google.  It is similar to PiratePad, which is powered by EtherPad. The EtherPad code is open source and can be found at http://code.google.com/p/etherpad/   Additional information can be found at http://etherpad.org/

Exciting Ways to Use Primary Pad in the Classroom 
Primary Paint goes public Beta! (Primary Paint is part of Primary Pad, I think.)


RELATED
John McLear's School Technology
Top 10 Google Android Apps for School #education (John McLear)
Richard Byrne's blog: Free Technology for Teachers