#1: Spacegray was featured in last week’s Top 5 list.

#2: Free Programming Books is the one that just won’t go away. This project first appeared on our trending list back in October.

#3: SpinKit hit the Top 5 two weeks ago.

July is a Chinese programmer whose popular blog on classic programming questions got too trafficked to handle on his own. July open-sourced the project and turned his blog into the first 38 chapters of an ebook, in the hope that other programmers will help him add to and ultimately finish it.

#5: Christmas Tree
A simple animated Christmas tree built of two spirals using only 11 lines of code. Andrei Kashcha was inspired by a story on Reddit, and wanted to try out the idea in JavaScript. The result is elegant in its simplicity.