Dev

• Opentutorials
• Baekjoon Online Judge
• LeetCode
• codecademy
• Nomad Coders
• Python Code

Design

• All Illustrations
• AutoDraw
• 0to255
• Flat UI Colors 2
• Placeholder.com

IDE

• Github Gist
• Carbon
• codepen
• goorm
• Repl.it
• CodeSandbox
• Color Scripter
• codeshare
• Pastebin
• codeimg
• snippet shot

JavaScript

• Modern JavaScript Tutorial(kor)

Editor

• Telegraph
• Calmly Writer
• Writer

miscellaneous

• rainbowhunt
• simon’s computer

Media

• Hankyoreh
• Media Today
• Junior Media Today