Grokking is new to me--looks like a powerful search possiblities that allows a mindmap of related terminology. You can create a teacher account, specify difficulty level, create graphs and more. Looks very interesting.
Locating similar websites can be a challenge--here's a quick way to seek alternative websites. Looks interesting! Good to share with kids too. I think it could be described as a targeted search engine.
PaperHelper is aniPad app that allows split screen--search web and take notes on other side ($1.99). This app really makes research online quite easy. Recommend.
mp3 collection of 'free' stories and poems; can search by author, title, reading level, content. All have PDF of passage so can be read as listened to.
Qrcodes (really just bar codes) will make it easy to make sure our students (and others) connect immediately with the item we want--no more searching through a class website. Looks interesting.