MindGrader is described as 'provides high quality testing & certifications for professionals across a wide range of technology related disciplines. Our certifications make a great addition to your resume or portfolio - giving you the competitive edge in any job market' and is an website in the Development category. There are more than 25 alternatives to MindGrader, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and iPad. The best alternative is Codecademy, which is free. Other great sites and apps similar to MindGrader are W3Schools (Free), tutorialspoint (Free), Code.org (Free) and Grasshopper (Free).
Code.org is a non-profit whose goal is to expose all students to computer programming. We believe that computer programming is a liberal art; it's something EVERY student in the world should be exposed to at some point in their childhood education.
Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on applying your algorithmic thought process on any problem you want at anytime.