Wordle is a toy for generating "word clouds" from text that you provide. The clouds give greater prominence to words that appear more frequently in the source text. You can tweak your clouds with different fonts, layouts, and color schemes. The images you create with Wordle are yours to use however you like.
Glogster is a cloud-based (SaaS) platform for presentation and interactive learning. It allows users to mix all kinds of media on a virtual canvas to create multimedia posters, and access a library of engaging educational content created by students and educators worldwide. Glogster encourages interactive, collaborative education and digital literacy.