Since SPX is an Open Source project it is available both as source code and as prebuilt binary packages, for Windows, Mac, and Linux operating systems.
Prebuilt binaries are delivered as a zip -file which can be extracted to a target folder on the computer and run as-is.
You can download the latest version of SPX from http://spx.graphics/download and read more about the latest features in this article. Binaries are the latest stable release and are recommended for most users.
Source code is available for developers on Github at Github: https://github.com/TuomoKu/SPX-GC