WordPress FAQ is a cool plugin for creating your FAQ section . It has a lot of parameters to set, and it will allow you set your own theme from scratch. It has a user-friendly front-end and back-end interface, allowing you to set all parameters quickly and easily. FAQs have SEO-friendly URLs.
documentr is a Web-based tool for editing and presenting software documentation. It allows you to easily maintain documentation for multiple products and product branches. Edits can easily be copied between branches, with merge conflicts being handled gracefully. It uses Markdown as its markup language, along with some extensions, and has a role-based permission system.
Exponent CMS is a content management system for Web sites. It allows site owners to easily create and manage dynamic Web sites without necessarily directly coding Web pages or managing site navigation. Exponent uses an intuitive and flexible content editing system that allows Web pages to be edited on the page as it is displayed. This avoids the need for more back-end administration or for navigating many administration pages to add a simple line of text. You can simply visit the page you need to edit as if you were a site visitor, and make the change.