Otter Wiki vs OutWiker
A side-by-side comparison of two self-hosted wikis & documentation options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Otter Wiki | OutWiker |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 84 · Excellent | 77 · Good |
| Category | Wikis & Documentation | Wikis & Documentation |
| License | MIT | GPL-3.0 |
| Language | Python | Python |
| Setup difficulty | Easy | Easy |
| Min. RAM | 128 MB | 256 MB |
| Deployment | docker, bare-metal, source | binary, source |
| GitHub stars | ★ 1,544 | ★ 331 |
| First released | 2021 | 2010 |
| Replaces | Confluence, Notion | Notion, OneNote |
What are Otter Wiki and OutWiker?
Otter Wiki
Otter Wiki is a minimalistic open-source wiki that stores its pages as Markdown in a Git repository. It offers a simple web interface with editing, history, and search for small teams.
- Git-backed Markdown pages
- Built-in history and diffs
- Full-text search
- Minimalist interface
OutWiker
OutWiker is a cross-platform desktop application for storing notes and knowledge in a tree structure, functioning as a personal wiki. Each page can use wiki markup, HTML, or Markdown, and plugins extend its capabilities.
- Tree-structured pages
- Multiple markup modes
- Plugin support
- Cross-platform desktop app
Otter Wiki vs OutWiker: key differences
Both projects are written in Python. Licensing differs — MIT for Otter Wiki versus GPL-3.0 for OutWiker. Otter Wiki is the lighter option, starting around 128 MB of RAM against 256 MB for OutWiker. OutWiker is the more established project (first released 2010), while Otter Wiki arrived in 2021. Otter Wiki has the considerably larger community, at 1,544 GitHub stars versus 331. Otter Wiki lists first-class Docker deployment; OutWiker does not.
Why pick each one
Choose Otter Wiki if…
- Easy to host and back up
- Clean, simple UI
Watch out for
- Basic feature set
- Smaller community
Choose OutWiker if…
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- Written in Python
- Tiny footprint — runs in 256 MB RAM
Watch out for
- Desktop only
- No built-in collaboration
Frequently asked questions
Is Otter Wiki or OutWiker better?
Neither is universally better. Otter Wiki has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Otter Wiki and OutWiker free and open-source?
Yes. Otter Wiki is licensed under MIT and OutWiker under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Otter Wiki and OutWiker with Docker?
Otter Wiki: yes. OutWiker: check the project docs for container support.
Which is lighter on resources, Otter Wiki or OutWiker?
Otter Wiki has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for OutWiker. Real-world usage depends on library size, user count, and enabled features.