A ProductHunt user asked which products others use for correcting grammar and spelling, so I answered; here's my answer, rewritten.

I'm going for Grammarly. I am a premium user—i.e. I'm paying for it—and there are many advantages that go with this, mainly as it corrects my language and style depending on what kind of documents I'm writing; this is especially helpful when using their standalone app, which allows you to set goals when writing/importing a new document. A screenshot of this:

Also, I must shout out to Microsoft Word as it is today. I'm using the Word 365 version, where their "Grammar & Refinements" section is greatly improved where it comes to correcting style.

Here are a few screenshots of what they're checking, e.g. "Clarity and Conciseness":

"Formal Language" and "Inclusive Language", which is very interesting where "bias" is concerned:

...and "Punctuation Conventions":

Still, I believe Grammarly truly shines where using their "Insights"; an example of this:

Grammarly wins for reasons of clarity, style, and simplicity. Still, they have a long way to go where technical writing is concerned; I use Microsoft's Style Guide professionally, and Grammarly is not really adhering to their ways of thinking. Gotta give MS claps for using GitHub for their Style Guide, by the way. All in all: Grammarly is something I dig, as it allows the use of add-ons for Chrome, Firefox, et cetera, and also plugins for the MS Office products.