Writing Tools
LanguageTool
2022-12-31 - I'm using the paid version of LanguageTool and I like how it takes care of the basics like commas, typos, and word choice. The rephrasing works good for single sentences (only available in the App). It also offers corrections in German and other languages than English. LanguageTool offers an API so I can use it in Obsidian (but only the Correction Mode works there).
Quillbot
2022-12-31 - Quillbot is only available as a webapp that includes a grammar checker, rephrasing tool, summarizer, and citation generator. Then there's Co-Writer, which combines all of the tools in a document editor. https://quillbot.com
DeepL Translator
https://www.deepl.com/translator
Hemingway
Grammarly
I guess it's good, but costly. Maybe it could replace the following two I am actually paying for :)