Giki is a flat-file, simple PHP wiki system based on Wiki! but with added features.

Features:
- File uploads
- An option to allow guests to post
- History
- Templatable nav-bar
- More secure logins
- A plugin system
- Support for multiple languages
- Support for nodes used as part of the page template. For example, the sidebar at the left is actually the LeftBar node, and was included in the template