Our "correct" and "warning" sounds come from

Our "buzzer" and "tada" sounds come from and are converted to mp3 format using

Our front end is written/generated in html5 and css3 using javascript and jquery hosted by Google.

The back-end is written in C++11 using the Clang compiler with further processing in Ruby and ERB.

We are statically hosted on Amazon S3 and install using gmake, custom Bash scripts, and the AWS CLI.

Domain management and DNS naming services are provided by Hover.

Our development environment consists of a mid-2007 mbp connecting via Mosh to a custom AWS EC2 AMI. Most program text editing is done in Vim, and self-hosted Git is used for configuration management.