"Wave Browser" is the common one that comes to mind immediately. I have several flagged in the "endpoint security" software I support, though.
The workflow is: (1) User wants some software functionality they don't have, (2) they search-engine using keywords like "convert Word to PDF", (3) they find a program that promises to do the thing they want, (4) they download it and click thru any warnings because they "want the thing", and (5) they end up with persistent per-user malware installed in their "AppData" folder.
This is really what any Electron-based app is. It's just Chromium running out of the AppData folder. There's a whole ecosystem of "shadow IT" software that installs out of the AppData folder, meant to end-run IT and central control, that functions great w/o Administrator rights.
https://download-chromium.appspot.com/
It's linked from the main chromium site:
https://www.chromium.org/getting-involved/download-chromium/