This is the successor to SACAD. SADA stands for "Smith Airfoil Design Application" and it is intended for use as a way of generating NACA-style airfoil splines for use in CAD suites such as SolidWorks.
Installation: In order to run this application you must install the Mono framework on your computer. If you're using macOS or Linux, good luck. The source code is available as well as the project file, which can be opened in Monodevelop (possibly).