DeRan’s downloads for you …
This downloads includes only the source code, not an executable application. To let the apps run you can use the Free-Pascal compiler with the Lazarus IDE. You can find it for Linux, Mac, Windows and many other platforms there: Lazarus Homepage.
Ngs4Computer
In Free-Pascal exists no function to find the closest value in an array. Here is a sample for an own function: ClosestValue