When comparing ReText vs Mark Text, the Slant community recommends Mark Text for most people. In the question“What are the best open source Markdown editors for UNIX-like systems?” Mark Text is ranked 13th while ReText is ranked 27th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro MathJax support
MathJax is a display engine that helps render mathematics properly.
Pro Preview incldues syntax highlighting
The syntax is highlighted in the Preview pane. The programming language in use is guessed. The code block has to be indented 4 spaces (or a tab) for the syntax highlighting to work.
Pro Package available for Fedora
Easy installation and auto-updates.
Pro Can export to Google Docs
Pro Open Source
Pro WYSIWYG or TEXT visualisation
Pro Has RTL language support
Can be used with languages such as Hebrew and Arabic.
Pro Very light : 103 Mb only
Cons
Con Lacks synchronized scrolling
The editing and preview panes don't scroll together. They have to be manually adjusted to align.
Con Not lightweight
On Windows 10 the installed size was 259 Mb, no surprise as this is an Electron based app.
Con Not a WYSIWYG editor, no formated preview
There is only plain text editing.