PmWiki - Free Wiki CMS

Pmwiki is a free open source wiki CMS, which is used by individuals, bloggers, developers to create wiki websites. It is written in PHP and is fully customizable.

Features

• Content Storage: Utilizes flat files for content storage, enhancing performance and simplifying backups.
• Wiki Structure: Organizes pages into namespaces, enabling hierarchical structures and customized configurations.
• Markup: Employs a straightforward markup language for formatting text, creating links, and embedding media. 
• Customization: Supports extensive customization through skins and plugins, allowing tailored appearances and functionalities. 
• Access Control: Offers password protection for pages or groups, with options for user-based permissions and integration with external authentication systems. 

Pros

• Ease of Use: Designed for simplicity, enabling users to create and edit content without technical expertise.
• Flexibility: Highly customizable to meet diverse needs, from personal blogs to corporate intranets.
• Community Support: Active community providing a wealth of plugins, themes, and assistance.
• Performance: Flat-file storage contributes to fast load times and straightforward backups.

Cons

• Learning Curve: While user-friendly, mastering advanced features and customization may require time.
• Limited Built-in Features: Core installation is minimal; some functionalities depend on third-party plugins.
• Compatibility Issues: Occasional challenges with integrating certain plugins or themes.

Free Plan Details

PmWiki is entirely free to use, with no licensing fees. Users can download and install it on their own servers without cost. While the core software is free, some advanced features or support services may involve additional costs.