I downloaded the eval version and took a quick peek. It looks very iaWriter-like. It’s designed to be both a markdown editor and blog publisher, with support for Wordpress, Metaweblog API, Wordpress.com, Evernote, Blogger, Medium, and Tumblr. That last one gets my notice-I’m on Tumblr for linkblogging and other ephemera.
It seems to also support images, and some esoteric syntaxes like mermaid, viz, echarts, plantuml, sequence, flow that I’ve heard of but don’t use.
Thoughts?