Markdown editor, open source with good tables support for edition : 

  * ⭐⭐⭐ https://www.zettlr.com/ 
  * ⭐⭐ https://www.jetbrains.com/ with plugin 
  * ⭐https://www.qownnotes.org/
  * https://joplinapp.org/
  * https://ghostwriter.kde.org/fr/
  * https://keenwrite.com/
  * https://www.marktext.cc/
  * https://markflowy.vercel.app/ https://github.com/drl990114/MarkFlowy
  * https://yank-note.com/
  * https://zed.dev/ with plugin