LeetCode
Description: LeetCode is an online platform for preparing technical coding interviews. It contains a large database of coding questions and allows users to practice and submit solutions to these questions, track progress, participate in contests, and more.
Type: software
RubyMonk
Description: RubyMonk is an interactive Ruby tutorial website for beginners. It teaches Ruby concepts and coding through hands-on exercises and quizzes.
Type: software
Pricing: Open Source