For lightweight stuff, there's vanilla Markdown, but you have no control over formatting. For more serious work using markdown, you can try out Ulysses[0] or Scribus[1].

And, if you feel like spending an obscene amount of money, on the order of $10k, there's Arbortext APP[2]. (I don't know why this even exists?)

[0]: https://ulyssesapp.com/ [1]: https://www.scribus.net/ [2]: https://en.wikipedia.org/wiki/Arbortext_Advanced_Print_Publi...