For several years, I was also curating a Tools site for students. I decided to stop updating that and to gradually move the more useful tools from that site to this Topics site, adding new tools as I come across them. Starting January 2017, here is (the beginning of) an index, by category:

Free Online Courses

Games & Puzzles

Images / Photography

  • Photofunia (free photo editing & effects site/app)


Video collections

Vocabulary improvement