When comparing Quoll Writer vs Zettlr, the Slant community recommends Quoll Writer for most people. In the question“What are the best apps for writers?” Quoll Writer is ranked 8th while Zettlr is ranked 12th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Automatic chapter save
Pro Open Source
Pro Frequent updates
Pro Image attachment
Pro Organizing-friendly
Pro Encryption
Any project can be encrypted with a password.
Pro Distraction-free mode
Pro Problem Finder
The Problem Finder helps you to identify issues with your writing.
Pro Import from Microsoft docx
Pro Export projects to docx, epub and html
Pro Achievements
Achievements are aimed at helping you get to know Quoll Writer and providing rewards for writing (after all no one else will be doing it).
Pro Cardboard
Pro Customizable
It's possible to change several aspects from displaying to character's datasheet.
Pro Statistics
Pro Focuses on writers
While many Markdown editors don't offer specific support for a certain type of workflow, or offer features for scientific workflows only, Zettlr offers features that help the writing process of journalists or researchers in the arts and humanities. It's a lot more text-focused than most editors.
Pro Citation support
While it supports a diverse range of syntax (chart, easy image insert, etc.) found in other editors, the great citation support made it possible to write real articles. Citation from Zotero and Mendeley can be inserted easily which is a huge plus.
Pro Almost perfect
This is the best option, still not perfect, there are some bugs like creating / editing tables and resizing images, but the PROS destroy the CONS, easy quotes, WYSIWYM , attachments tab (supports attaching and opening links to any file), table of contents, TAGs, easy hyperlink between files (same as citations), export to many formats (like Word, HTML5, PDF)...
Pro Renders math in-place through KaTex
Cons
Con Windows only
Although it should be possible to make a multi platform version as Quoll is written in Java.
Con No mobile app
Con No cloud support
Unfortunatelly, there's no cloud support, which is very important nowadays.
Con Obtrusive, like someone WITH CAPS LOCK ON
Too loud, too much going on, and definitely an in-your-face sort of feeling.