Zettlr: A Privacy-First Writing App for People Who Actually Need to Cite Things
You've got a draft going, a folder full of references, and a deadline that's getting uncomfortably close. Your current setup involves three apps, a text file full of half-broken citations, and a lot of copy-pasting. What if your writing environment just handled all of that? Zettlr is an open-source publication workbench that tries to be exactly that—a single place to draft, cite, and export your work without sending your notes off to someone else's servers.
What It Does
Zettlr is a desktop writing application built around the idea that your notes are yours. It's privacy-first by design, meaning your text stays on your machine rather than living in a cloud account. It runs on macOS, Windows, and most Linux distributions, and it's available in over a dozen languages.
At its core, it's a Markdown editor, but it's aimed at people producing finished documents rather than quick notes. It handles citations through integration with reference managers like Zotero and JabRef, supports LaTeX and Word templates for drafting publications in a professional environment, and exports through Pandoc, LaTeX, and Textbundle. There's a full-text search that's meant to find anything, anywhere, plus support for Zettelkasten-style knowledge management if you're into that workflow. Snippets let you automate boilerplate insertion, custom CSS gives you control over appearance, and code highlighting covers a lot of languages. It's GPLv3 licensed and built as a proper open-source project, with a homepage, documentation, a community forum, Discord, and a Mastodon presence.
Why It's Cool
It treats citations as a first-class problem. Most Markdown editors wave in the general direction of footnotes and call it a day. Zettlr builds tight integration with Zotero, JabRef, and other reference managers directly into the workflow. If you've ever written an academic paper, you know how much friction that removes.
Privacy isn't a feature toggle—it's the premise. The README leads with "Your Notes are your notes." That framing matters. If you're working on anything sensitive, or you just don't want another subscription tied to your writing, this is the kind of architecture you want. It's a local app, not a service.
The export story is genuinely flexible. Pandoc, LaTeX, and Textbundle support means you can adapt to whatever pipeline your employer or school demands. Word templates, LaTeX templates—the app meets you where your institution is, rather than asking you to fight it.
It takes the Zettelkasten crowd seriously. State-of-the-art knowledge management techniques are supported natively. Combined with powerful full-text search, that's a real workflow, not a checkbox feature.
Customization runs deep. Themes, dark modes, and custom CSS mean you're not stuck with someone else's idea of what a writing app should look like. Snippets and code highlighting round out the practical stuff.
It's free and open source. GPLv3, actively maintained (there are build and lint badges, plus a DOI for citation), and backed by a real community rather than a single maintainer's weekend project.
How to Try It
- Head to the download page or grab a release directly from the GitHub repository.
- Install it like any other desktop app—there are builds for macOS, Windows, and most Linux distributions, with 64-bit installers for the common cases.
- If you want to build from source instead, the README includes a dedicated section for that, along with a tech stack overview, debugging notes, an architecture overview, development commands, build flags, and a directory structure walkthrough. There's also a list of recommended VSCode extensions if you're planning to contribute.
- Once it's running, point it at your reference manager (Zotero, JabRef, or similar) and start drafting. When you're ready to ship, export through Pandoc, LaTeX, or Textbundle.
- If you get stuck, the documentation and community forum are the first places to look. There's also a Discord and a Mastodon account if you prefer real-time or social channels.
Final Thoughts
Zettlr isn't trying to be everything to everyone—it's aimed at writers who need citations, exports, and control over their own files. If you're an academic, a researcher, a student, or anyone producing long-form work with references, the combination of Pandoc exports and Zotero integration alone makes it worth a look. If you just want a fast scratchpad, it's probably more than you need. But for the specific problem of "I need to write this properly and get it out the door in the format my institution wants," it's a solid, privacy-respecting answer. Worth downloading and poking at—the worst case is you find out it's not for you, and the best case is you stop juggling three apps to finish a paper.
Follow @githubprojects for more developer tools and open source projects.