I'm a developer based in the US, a lot of my open source work is related to web development stuff, but I do some other random projects as well. My largest project is OpenCircuits which is a free, online, digital circuit designer.
My website is http://leonmontealeg.re/
Currently, I'm doing a lot of small side-projects related to physics simulation, along with readily working on OpenCircuits.
You can follow me on Twitter, Instagram or whatever else you can find me on probably.