What Zettlr is
Zettlr is a free, open-source Markdown editor written by an academic for academic writing. It edits plain-text files like any Markdown editor, and adds the two things that separate writing a paper from writing a blog post: live citation autocomplete from your reference library, and one-click export through Pandoc with a correctly formatted bibliography in your journal’s style.
That combination is the whole proposition, and it is narrower and more useful than it sounds. Obsidian can be configured to do both through community plugins, and many people do. Zettlr does them out of the box, as core features, because they are what the tool is for. If your goal is to write cited academic prose in Markdown rather than to build a knowledge system, that difference is the difference between an afternoon of configuration and opening the application.
Why researchers use it
- Type
@and get your library — citation keys autocomplete from your Zotero export while you write, with no plugin to install. - Export that produces a real manuscript — Pandoc integration to Word, PDF, or LaTeX with CSL styles applied, from a menu rather than a command line.
- Plain Markdown files — the same ownership and durability as any text-based tool, versionable in Git.
- Zettelkasten support — IDs, internal links, and a file-based structure for people who work that way, without forcing it on people who do not.
- Free and open source — no tier, no account, no plugin marketplace to evaluate.
Where it fits in a research workflow
Zettlr occupies the space between notes and manuscript, and it is deliberately one tool rather than an ecosystem. Upstream is Zotero with Better BibTeX producing a bibliography file; downstream is a .docx for your supervisor or a PDF for submission.
For humanities and qualitative social science in particular, that covers the entire writing pipeline without touching LaTeX: read, note, draft with citations, export. The Markdown and Pandoc workflow is the same pattern assembled from parts; Zettlr is the version where the parts are already assembled. Where it hands off: Obsidian if you want a linked knowledge system with a plugin ecosystem, Scrivener if fragment-based restructuring is your bottleneck, and Overleaf or Quarto if the document needs LaTeX or executable code.
Getting started
An hour, and the citation setup is the part that matters.
- Install Zettlr and Pandoc — Zettlr uses Pandoc for export, so without it the export menu does nothing useful.
- In Zotero, install Better BibTeX and set up an automatic export of your library to a
.jsonor.bibfile that stays current. - Point Zettlr’s citation settings at that file. Now typing
@in any document offers your actual references, which is the moment the tool justifies itself. - The step people skip: download the CSL style for your target journal and configure it before drafting. Exporting with the right bibliography style from the first draft means never doing a reformatting pass.
Zettlr vs the alternatives
| Alternative | Does it better | Pick it if |
|---|---|---|
| Obsidian | Linking, plugins, and a knowledge system that compounds | Notes matter as much as drafts |
| Scrivener | Restructuring a long document from movable fragments | Your problem is the shape of a thesis |
| Quarto | Executable code inside the manuscript | Your figures come from analysis |
| Pandoc plus any editor | Flexibility and scriptability | You want to assemble it yourself |
Zettlr’s advantage is that it is one thing that works. Its disadvantage is that it is only that thing.
Cost, licensing, and your data
Free and open source under the GPL, cross-platform, developed by a small academic-led project. There is no paid tier and no account.
Files are plain Markdown on your disk, so ownership, portability, and version control are all straightforward and nothing leaves your machine. That makes it appropriate for drafting work containing unpublished findings or participant quotes without any governance conversation. The dependency worth noting is project scale: Zettlr is maintained by a very small team, which is fine for a tool whose output is plain text — if development stopped tomorrow, your files remain files and Pandoc remains Pandoc — but it does mean slower fixes and a smaller community when something breaks.
The honest review
Strengths. Zettlr is the shortest free path from literature notes to a properly cited draft without learning LaTeX. For humanities and social science researchers who want plain-text durability and academic citations and do not want to assemble a system from plugins, it is exactly right — and the fact that citation and export are core features rather than community add-ons means they keep working across updates.
Limitations. It is less polished than the larger note applications, with an interface that has visible rough edges and occasional awkwardness in areas the core developer has not prioritised. There is no meaningful plugin ecosystem, so what ships is what you get. Large collections feel slower than in Obsidian. Development is thin, which shows in the pace of fixes. And it sits in an uncomfortable position: less capable than Obsidian as a note system, less capable than Scrivener at long-form restructuring, and better than both only at the specific citation-and-export path.
Verdict. Adopt it if you want one simple free tool that writes cited academic Markdown and exports properly. Skip it if you already use Obsidian, where the Citations and Pandoc plugins cover the same ground inside a system you have already built. The condition that flips the answer is whether you want a tool or an ecosystem.
Common questions
Is Zettlr free?
Yes — free and open source under the GPL on Windows, macOS, and Linux, with no account and no paid tier.
How do I set up Zotero citations in Zettlr?
Install Better BibTeX in Zotero, configure an automatic export of your library to a .json or .bib file, and point Zettlr’s citation settings at that file. Typing @ then autocompletes from your actual library.
Zettlr or Obsidian?
Zettlr if you want one free tool that writes cited academic Markdown and exports to Word or PDF with a correct bibliography, with no configuration. Obsidian if you want a linked knowledge system with a large plugin ecosystem and are willing to assemble the citation workflow yourself.