ELLs in Middle & High School A collection of resources from Colorín Colorado, "a national multimedia project that offers a wealth of bilingual, research-based information, activities, and advice for educators and families of English language learners (ELLs)."
ELL Best Practices Collection Teaching Tolerance.org compiles its best ELL resources here to ensure your classroom is a welcoming place for English Language Learners.
ReWordify Tool that rewords text that you copy and paste into it. Note: the resulting text is often longer because tricky words are replaced with phrases explaining them.
English For Everyone Comprehensive site with TONS of printable and online lessons and activities for teaching all things ESL.
YourDictionary Vast collection of articles and lesson plans for teaching ESL students. CamFind This iPhone app lets you take a picture of ANYthing and find out what it is, using visual search technology - no words or typing necessary! You can adjust the settings to a wide variety of languages so students can ID objects in their first language, then in English to get the translation.