Anki
Used by 4 peopleapps.ankiweb.net ↗
“Anki for memorizing things I want at my mental fingertips”
Devon Zuegel Interview, Writer, developer · via Uses This 
“Right now I'm trying to learn a new spoken language, so Anki deserves a mention.”
Adam Wiggins Interview, Hacker, entrepreneur (Heroku) · via Uses This 
“For learning anything, I use the awesome Anki, which I love so much I donated $500 to.”
Derek Sivers Interview, TED speaker, founder of CD Baby · via Uses This
