Eclipse - A very popular IDE for Java programming, which is covered in the AP Computer Science class. www.eclipse.org
Technology Student Association - A large organization of high school and middle school student members who compete in engaged STEM topics. www.tsaweb.org
Construct 3 - A free software game engine that requires no programming. www.scirra.com
JGRASP - A simple IDE that the AP Computer Science class uses for Java programming. www.jgrasp.org
BeepBox - Website that allows people to create their own music using code. www.beepbox.co
OverTheWire - Various minigames based around website security, similar to Capture the Flag. www.overthewire.org
CSS Diner - CSS-based minigame that uses a single line of code to select a certain object. www.flukeout.github.io
Create a Google doodle - An activity sponsored by Google that allows one to create a Google doodle in Scratch. https://csfirst.withgoogle.com/c/cs-first/en/create-your-own-google-logo/create-your-own-google-logo/create-your-own-google-logo.html
HTML Hour of Code - A basic HTML/CSS activity that allows you to build a small website focused around people who've inspired your interest in computer science. https://app.bsd.education/project/the-people-who-inspire-me--hour-of-code
https://www.cyberstartamerica.org/