So, Marc built a solution: .
If you install it today on a vintage Windows XP machine in offline mode, it still works—clicking and clacking as it did twenty years ago, mapping your keystrokes to characters that would otherwise be lost to silence. tavultesoft keyman 5.0 software free download
The original Keyman 5.0 free download is no longer on official servers. SIL’s current website warns: "Older versions have known security issues and do not support Unicode fully." However, archives like and oldversion.com still host the 5.0 installer, often labeled "keyman50.exe" or "setup_keyman_5.0.102.0.exe". So, Marc built a solution: