You can download PLT Scheme 4.2.5 from our software library for free. This free program was originally produced by PLT Scheme Inc. DrScheme.exe, Help Desk.exe, MrEd.exe, MzScheme.exe or plt-help.exe are the default file names to indicate this program's installer.
The following versions: 4.2 and 4.1 are the most frequently downloaded ones by the program users. The latest version of the program can be downloaded for PCs running Windows XP/Vista/7/8/10, 32-bit. Our built-in antivirus scanned this download and rated it as virus free. The file size of the latest installer available is 25.6 MB. The software lies within Development Tools, more precisely IDE.
From the developer:
PLT Scheme is an innovative programming language that builds on a rich academic and practical tradition.
It is suitable for implementation tasks ranging from scripting to application development, including GUIs, web services, etc.
You may want to check out more software, such as PLTS for ArcGIS - Foundation, Amethyst PLT-2-DWG or Scheme 48, which might be similar to PLT Scheme.