STEM

Math, Data, Statistics

• https://www.mathway.com/ : get answers to math problems
• WolframAlpha.com: get answers quickly without searching (not just math!!!)
• ThinkCalculator.com: fancy calculator?
• https://www.desmos.com/ : graphing
• http://onlineconversion.com/ : convert stuff
• http://curiousmath.com/ : curious and useful math
• https://projecteuler.net/
• SageMath: alternative to Mathematica and Mapple
• Octave: computational program compatible with MatLab
• Microsoft Math Add-in: Graph and solve equations in Word and OneNote
• R: software environment for statistical computing and graphs

Programming and Computer Science

• http://wwwhere.io/: A curated list of tools and resources for people who make websites
• Notepad ++: Source code and text editor with support for various languages
• Zeal: offline documentation browswer
• Soap UI: API and Web Service testing tool
• Visual Studio: free, fully-featured IDE for students
• Virtual Box: virtualization software for various operating systems
• JetBrains: free IDEs and developer tools for students
• https://www.codecademy.com/ : learn to code
• https://www.w3schools.com/ : learn to code, includes references
• R: software environment for statistical computing and graphs
• https://learncodethehardway.org/
• http://htmldog.com/
• https://www.codeschool.com/users/sign_in
• https://rubymonk.com/
• http://codingbat.com/
• http://rosalind.info/problems/locations/