When comparing Joomla! vs Kirby CMS, the Slant community recommends Kirby CMS for most people. In the question“What is the best PHP CMS?” Kirby CMS is ranked 2nd while Joomla! is ranked 4th. The most important reason people chose Kirby CMS is:
Installing means uploading some files to your server and that's it.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Highly customizable templates
Joomla allows for heavily customizable templates to be changed from the admin interface without needing to hack.
Pro Powerful and user-friendly admin interface
Admin interface is constantly being iterated on to remove unnecessary legacy features and to streamline the interface. Resulting in a very clean and easy to understand interface that also offers a wide range of options.
Pro More than 8000 extensions
Which can be found here.
Pro Easy to pick up
Pro Great for social networking and commerce sites
Joomla has both a good native support and a great list of extensions that make creating either a social networking or a commerce site easy.
Pro Kirby is a file‑based CMS
Installing means uploading some files to your server and that's it.
Pro Great Community
Pro Good support
Well documented and friendly community.
Pro Markdown syntax
Write your content with plain Markdown or use Kirbytext.
Pro Custom panel
You can create custom panel (admin section) for every page type with ease.
Pro Very customisable
From very simple pages to highly customised content models, almost anything is possible. Fast prototyping.
Pro Great community
Pro Open source
Pro Not free for commercial
This is good thing. Free CMS always have some hidden pricing model that you eventually pay actually more than this.
Pro Super Flexible
The entire CMS is extremely flexible and very easy to use.
Pro Open for unconvetional/exoerimental solutions
Cons
Con Insecure
It's common-place for a Joomla-based website to be defaced, often very quickly. This is most often due to the low quality of extensions.
Con Extensions are scarce, badly maintained & rarely good
If it's not part of the default Joomla installation, quality extensions are rare. Joomla has a extensions library, but it is full of abandoned, dated or bloated components, modules and plugins.
Con Euro 99,– per domain
Kirby CMS costs Euro 99,– (plus VAT) per installation. There is no longer a discount for private websites.
Con Kirby 3 pricing went up
The price went up with Kirby 3 as the CMS grew. It's still worth it but maybe not for small websites. Tip: They sometimes offer social pricing on demand for small structures or students.