Kirby vs ProcessWire
A side-by-side comparison of two self-hosted content management systems options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Kirby | ProcessWire |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 84 · Excellent | 79 · Good |
| Category | Content Management Systems | Content Management Systems |
| License | Proprietary | MPL-2.0 |
| Language | PHP | PHP |
| Setup difficulty | Medium | Medium |
| Min. RAM | 256 MB | 256 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 1,531 | ★ 1,153 |
| First released | 2012 | 2010 |
| Replaces | WordPress, Squarespace | WordPress, Drupal |
What are Kirby and ProcessWire?
Kirby
Kirby is a flexible file-based content management system that stores content in plain text files and gives developers full control over markup. It is popular for portfolios and custom-designed websites.
- File-based content storage
- Flexible panel for editors
- No database required
- Developer-friendly templating
ProcessWire
ProcessWire is an open-source CMS and framework that gives developers a powerful, jQuery-inspired API for working with content. It is known for flexible content modeling and clean front-end markup.
- Powerful content API
- Flexible field-based modeling
- Clean front-end output
- Module ecosystem
Kirby vs ProcessWire: key differences
Both projects are written in PHP. Licensing differs — Proprietary for Kirby versus MPL-2.0 for ProcessWire. ProcessWire is the more established project (first released 2010), while Kirby arrived in 2012.
Why pick each one
Choose Kirby if…
- Easy backups and version control
- Highly customizable
Watch out for
- Commercial license required for production
- Free only for personal use
Choose ProcessWire if…
- Excellent developer API
- Highly flexible
Watch out for
- Less polished for non-developers
- Smaller community
Frequently asked questions
Is Kirby or ProcessWire better?
Neither is universally better. Kirby has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Kirby and ProcessWire free and open-source?
Yes. Kirby is licensed under Proprietary and ProcessWire under MPL-2.0. Both can be self-hosted at no software cost.
Can I run Kirby and ProcessWire with Docker?
Kirby: yes. ProcessWire: yes.