FlashTabs - Flashcards in your new tab screen
Skillied - Learn locally
Flashcards + AR - Learn anywhere with augmented reality flashcards ✨
Brainscape - Find, create, and study SMART FLASHCARDS on any device. DOUBLE your learning speed using the most effective study system on the planet. Keep all your content in sync across Brainscape's website and your Android devices.
Educreations - Teach anything to anyone from anywhere.
Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.