Screenshots
About
It uses the most popular Stack Overflow questions, and sprinkles it with some spaced recall algorithms. The goal of this spaced recall is to help the student move answers into long-term memory. Stack Overflow is a natural good source of continuous, peer reviewed, modern Q&A content. (Heavily inspired by anki, an excellent flash card program.)
License
Code licensed under the MIT license
Platform
Ruby on Rails, PostgreSQL & Redis
Source
https://github.com/stefan-lz/topstack.io, contributions welcome.
Contact
By leaving a comment below.