jr-apputils - the library for an app launched by jr: what jr told it about itself (JrApp), an app's own install and update commands in a few lines, the per-OS standard folders, and the Windows wiring (user PATH, shortcuts, start at sign-in) through FFM, with a receipt so uninstall is exact.

JavaFX approval window, access list, passphrase dialogs and tray shell for a leasegate gate.