Although there are no specific instructions, portable desktop applications can be built utilizing Kiss in conjunction with Electron (https://electronjs.org). These applications would be portable to Linux, Mac, Windows, and other platforms with a single codebase.
Kiss would provide the back-end portion of the application as a local server and could be written in Java, Groovy, or Lisp.
The front-end portion of Kiss would be used in conjunction with Electron in HTML, CSS, and JavaScript.
The two halves would communicate locally and operate as a standard desktop application.
If there is interest, please contact this author for assistance.