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
Caret - Better Markdown Editor for Mac / Windows / Linux
Pine - A lightweight, modern macOS markdown editor written in Swift
Jekyll-Markdown - An elegant markdown blog generator using Jekyll
LightPaper - Admired by thousands, LightPaper is a powerful markdown editor with features such as Multi-Tabs, Folder Navigator, Distraction Free Mode, Quick Open, Live Preview, Full GFM Support, Math rendering etc.
Write.md - Sharable, distraction free markdown editor.
MWeb - Pro Markdown writing, note taking and static blog generator