Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
Pocket - When you find something you want to view later, put it in Pocket.
Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.