Create or enhance images or Animate

Image Chef
Image Generators
Image Generators and Clipart
Photobucket
GoAnimate
Mutapic
Artpad
TiltShiftMaker
SumoPaint

Mashups and Maps

Wayfaring (Mappable Mashup)
Placeopedia

Data Visualization

Manyeyes (data visualization)
Swivel (charts and graphs)
Gapminder (data visualization

Learning Games

GrammarNinja
Freerice
Capzles

Screen Captures

CamStudio
Screener
Jing

Lessons and Flashcards

Hippocampus
Muchobeets.com
Brainpop
Proprofs

Presentation alternatives to Powerpoint

PhotoPeach
animoto
Proprofs
Preezo
Glogster
Stupeflix
Prezi The zooming presentation poster.

Create Avatars and Characters

HeroMachine

Create Online Quizzes and Polls

Classmarker
Proprofs
PollDaddy
Poll Everywhere

Create Timelines

Timetoast

Video Blogging

Fliggo

File storage and sharing

Dropio
Notebook.Zoho

Fun with words and vocabulary

Wordle
Weboword

Science Videos

FuturesChannel

Create your own comic

PikiKids

Create your own microblogging network

Shoutem