F2 is an elegant, interactive and flexible charting library for mobile.
F2 is born for mobile, developed for developers as well as designers. It is Html5 Canvas-based, and is also compatible with Node.js, Weex and React Native.
EasyTimer.js is a simple timer/chronometer/countdown library compatible with AMD and NodeJS.
EasyTimer.js released under the MIT license
date-fns has 140+ functions for all occasions.