For macOS 10.10 and later only. Apps and some AppleScript applets from this website already have a "Check for Update..." menu command. But for those that don't this applet can check for the latest version. Simply drag an AppleScript to this applet's icon or double-click to it launch and choose an AppleScript on your machine via an Open Panel to initiate the check.
Click the "Visit Website" button to go to the script's entry page at dougscripts.com.
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Check scripts downloaded to your computer from dougscripts.com for latest version