I use Hugo to build this site locally, and s3cmd to upload it to Amazon s3. Eventually I may also push the site to Amazon’s CDN, but for now the site seems plenty fast enough.
The fonts used are Lato and Ubuntu.
The design is adapted from the Casper theme.
Hardware
I predominantly use a Macbook, but I also have a custom-built desktop that runs both Windows and Linux (Ubuntu 13.04).