Zettlr vs zk
A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Zettlr
Markdown editor for writers, researchers, and Zettelkasten users
VS
zk
Plain-text note-taking and Zettelkasten assistant
| Feature | Zettlr | zk |
|---|---|---|
| Category | Notes & Knowledge Base | Wikis & Documentation |
| License | GPL-3.0 | GPL-3.0 |
| Language | TypeScript | Go |
| Setup difficulty | Easy | Easy |
| Min. RAM | 256 MB | 64 MB |
| Deployment | bare-metal, binary | binary, source |
| GitHub stars | ★ 13,354 | ★ 2,748 |
| First released | 2017 | 2021 |
| Replaces | Notion, Obsidian | Roam Research, Obsidian |
Why pick each one
Choose zk if…
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- Active community (2.7k GitHub stars)
- Written in Go
Frequently asked questions
Is Zettlr or zk better?
Neither is universally better. Zettlr has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Zettlr and zk free and open-source?
Yes. Zettlr is licensed under GPL-3.0 and zk under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Zettlr and zk with Docker?
Zettlr: check the project docs for container support. zk: check the project docs for container support.