The following .zip files contain everything you need to start development with an S4 payload, including applications, libraries, an Arduino sketchbook, and the Arduino program itself.
Windows Software Package (09/18/14)
Mac Software Package (5/20/14)
Linux Software Package 64 bit (5/20/14)
Linux Software Package 32 bit (4/11/14)
You can also get the latest version of the Server Application (including the source code) from our GitHub Repository: