If by "patcher" you mean a system to push new content and updates to your users, then I think the answer is no.
Solutions would depend on whether you need to update the .exe, or just files in the "Files" folder of your standalone.
You might have to code one yourself with something like VB, C#, or FreePascal.
In today's Twitch at 30:07 Lee mentioned a vestigial FTP module that is still in GameGuru.
If you mention it on the "Feature Creep" forum they might be able to do something for you.
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