Alternate Spelling Plugin

Yes, I’ve used one called W-P.

Where can I find it? Google’s not being too helpful…

Actually it’s one of mine:

https://guff.szub.net/2005/01/22/w-p/

But it’s not quite the same sort of utility as you’re requesting, which would be more of a spellchecker plugin. Look here for a few of those:

https://codex.www.ads-software.com/Plugins/Admin_Tools

No, that’s not exactly what I’m looking for; I mean something more like Google Suggest, or Google itself, where it recommends popular/correctly-spelt phrases if you search for something and spell it wrong, or something.