Given the nature of Gridsync as an application intended primarily to work in the "background" (i.e., run while users perform other tasks and mostly stay out of the way), it would be desirable if both its Dock icon and presence in the active applications list could be concealed while still remaining accessible via the macOS menubar icon.

Normally, this behavior can be achieved by setting the LSBackgroundOnly and LSUIElement Launch Service Keys in the application bundle's Info.plist file to True (as described here), however, this is not currently possible with PyInstaller-generated macOS applications, whose "bootloader" does not respect or passthrough the appropriate values (as described in this issue and elsewhere).

Accordingly, Gridsync should switch to a different packaging/freezing tool for shipping macOS binary distributions (such as py2app or cx_Freeze) -- if even temporarily or until the issue is resolved -- in order provide such behavior for macOS users.