When comparing Wekan vs Zettlr, the Slant community recommends Wekan for most people. In the question“What are the best open source cross-platform note taking apps for programmers?” Wekan is ranked 4th while Zettlr is ranked 9th. The most important reason people chose Wekan is:
Open source software benefits from collaborative development from the user community.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
Open source software benefits from collaborative development from the user community.
Pro Install with a few clicks with Cloudron or Yunohost
Making it really easy to self host.
Pro Easy to create instance on sandstorm.io
Wekan is available as an app on sandstorm.io. For personal use, it may be sufficient to run an instance in a free sandstorm account.
Pro Easy to install on most arm64, x86 and x64 linux systems
Pro Friendly support
Developers are very helpful and friendly.
Pro Clear UI/UX
Well-thought-out user interface – despite the high complexity of the functionality very intuitive.
Pro Can easily be integrated with NodeJS apps
Since it's built using Meteor, it can easily be integrated with existing NodeJS apps.
Pro Written in JavaScript
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 No print version of the ticket page
Con No desktop notifications
Con Obtrusive, like someone WITH CAPS LOCK ON
Too loud, too much going on, and definitely an in-your-face sort of feeling.