Quick Code - Curated list of free online programming courses
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
Py - Learn to code on the go 📱
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Mimo - Learn how to code on your iPhone📱
Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.