What are some alternatives?
When comparing Ginger and ProWritingAid, you can also consider the following products
Grammarly - Clear, effective, mistake-free writing everywhere you type.
LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.
Hemingway Editor - Hemingway App makes your writing bold and clear.
Ludwig.guru - Linguistic search engine and contextualized translator. The final solution for your writing doubts!
Slick Write - Slick Write checks your writing's grammar and style for free!
Editsaurus - Highlights potential pitfalls in your writing to encourage good habits.