Zenario

Main features:

- Free and completely open source code written in PHP

- WYSIWYG tools for arranging page layouts and editing content

- Version-controlled content, allowing pages to be previewed and a history to be stored

- Intuitive tools for managing site navigation

- Support for blogs, news items, events, and other content types (developers can create their own content types)

- Ability to create micro-sites

- Extranet user and contact management; full set of user-side extranet features (login, register etc.)

- Powerful Forms feature, with which data can be captured and then emailed or merged with a user's data

- Document management through a familiar folder-like hierarchy, powerful tagging features

- Datasets, with which you can easily add fields to many types of data (Users/contacts, Documents, Countries etc.)

- Gridmaker tool for creating responsive or fixed-width designs using a grid-based design