CatWiki is very simple wiki software that stores its articles as text files.

• Stores articles as text files, so they are easy to back up and manipulate. Even if the wiki software goes down, you can still get at your notes.
• Uses an enhanced version of the the Markdown markup language.
• Allows multiple wikis per installation, each one in its own directory.
• Allows subdirectories. You can navigate through the directories using the web interface. If the directory includes image files, the web page shows thumbnails of them.
• You can add Font Awesome icons in your wiki pages.

CatWiki is written in Python and uses the Flask lightweight web framework.

Here are some screenshots of CatWiki in action.

Here is an article in CatWiki:

Here is the same article in CatWiki's text editor:

This shows all the articles, other files, and sub-folders in a folder.