What platforms support Icon?
The current implementation of Icon is a Unix implementation. This includes Linux, BSD, Macintosh, and the Cygwin environment under Windows. Version 9.4.3 was revalidated in November, 2008, under Ubuntu 8.10 and MacOS 10.5.5. Older versions are available for Windows and some other systems. An alternative Java-based implementation for Unix, Jcon, is also available. None of these environments includes a window-based development environment. While Icon programs can open windows and use graphics, programming is done using Unix editors and other tools from a command shell.