I've been working on some projects during my free time. All of them are open source and available on GitHub.
Scribble is a very simple web apps that allows you to easily write down math equation and symbols and share it with your friends.
Emoji for Jekyll is the most powerful and easy Jekyll plugin that you can find out there that allows you to use emoji on your Jekyll site.
Spritz for Jekyll simplifies the process of bringing Spritz to your Jekyll-powered sites.
Reddit Open All is a Chrome extension that allows you to open all links on Reddit main page and subreddits with a single click of mouse.
A scientific calculator emphasizes on complex numbers.
A Ruby library that draws Bézier curves.