A comparision of Zettlr with some very popular Markdown editors in table form.

Zettlr Typora The Archive Bear nvALT
Website zettlr.com typora.io zettelkasten.de bear.app brettterpstra.com
Price Open Source Proprietary 19,99€ Free or 15,99€/Year (Subscription) Open Source
Zotero Integration
Citations (BibTex, JSON, et al.)
Project Support
Full Zettelkasten support
Theme Customisation
Themes 4+ 4+ 5+ 3 (Free) / 16 (Paid) 5+
Languages da, de, en-GB, en-US, fr, it, es, hu, pl, ro, jp, zh, ru, uk cz, de, en, es, gr, fr, glg, hr, ind, it, nl, hu, pl, pt-BR, pt-PT, ru, swe, vie, zh, jp, ko en en, fr, de, it, jp, ko, pt, ru, zh, es de, en, fr, it, pt, zh
Word counter
Writing Statistics
Full Text Search
Code Highlighting
Dark mode Support
Markdown Preview In-place WYSIWYG In-place WYSIWYG
Export Formats HTML, PDF, OpenDocument, Word, RTF, and 35 more HTML, PDF, Word Markdown, RTF (Free) / PDF, HTML, Word, JPG (Paid) Plain, HTML, Word, RTF
File tagging and tag management