Based on our record, Iceberg Editor seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Regarding the backend editor, there's a plugin called Iceberg that do just what you described: https://useiceberg.com/. Source: over 2 years ago
Pine - A lightweight, modern macOS markdown editor written in Swift
Dillinger - joemccann has 95 repositories available. Follow their code on GitHub.
Caret - Better Markdown Editor for Mac / Windows / Linux
MWeb - Pro Markdown writing, note taking and static blog generator
Write.md - Sharable, distraction free markdown editor.
Loose Leaves for Mac - Instantly share what you write in Markdown