Modern markup

Mostly a subset of WikiCreole, except with a completely different LinkSyntax.

Modern HTML

Generated pages normally validate as HTML5 (though it's possible to break that), and CSS is supported. We're not in 1995 anymore.

UTF-8 support

While page names are restricted to ASCII characters, page contents are handled as UTF-8, permitting a wide range of characters.

Page transclusion

Can be used as a poor man's redirect, plus other things.

Flat-file storage

Pages are saved as ordinary text files on disk, making them easy to backup, inspect or change from outside WabiSabi.

Page backups

The previous two versions of any page are saved. A future release will probably offer access to them.

Captcha

The simplest possible system, based on a fixed password. Before you ask, yes, this is effective, and also allows for a non-public wiki simply by hiding the password.

Recent changes

On the other hand, it should be easy to watch when pages are changed, in order to catch vandalism quickly.

Wanted pages

The first attempt to access a non-existent page marks it as wanted, making it easy to see which content might be desired on the wiki.

Plugin support

Allows creating extra wiki actions and markup plugins, and replacing or modifying the built-in templates, without any changes to the core file.

Universal Edit Button

See http://universaleditbutton.org/Universal_Edit_Button