This document lists and describes 20 free online tools that can be used for education. Some of the tools described include blogs like WordPress and Blogger that allow students to present work and receive teacher feedback, Socrative for interactive quizzes and polls, Storify for compiling research from multiple online sources, and Diigo for bookmarking and annotating websites. Other tools mentioned are for collaboration (Tricider), creating videos (Animoto) and presentations (Prezi), timelines (Dipity), flashcards (Quizlet), finding answers (Quora), comics (MakeBeliefComix), podcasts (Podomatic), and file conversion (Zamzar).