Lalilo is a web-based literacy app for K-2 teachers.
This year's list includes a wide variety of educational sites and apps, from student response systems to curation tools to multimedia resources.
I am going to be transitioning all of my class websites from traditional Google Sites to simple Google Documents.
Google Classroom helps teachers manage workflow and communication with their students (it's available as a website, an Android app, and an iOS app).
Storybird is an online social platform (and Chrome app) for storytelling. Students act as authors, pairing their words with site-curated, licensed art.