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WordPress

WordPress is an open source content management system (CMS). It provides a structured website that enables users to create and edit various types of web content without requiring in depth technical knowledge of web authoring or programming languages.

Novice users can create web pages and add basic text and graphics to them with only a minimal introduction to the system; they can also take advantage of WordPress plugins, widgets, and themes. WordPress can also be used simply as a blogging tool.

Technical Expertise Required: 
No programming
Cost: 
Free
Additional Information: 

While WordPress does not require technical skills to use once it is installed, as a server application the initial implementation of WordPress needs to be performed by a systems administrator with at least intermediate skills in server installation and management. There are also many hosting sites available (http://wordpress.org/hosting/), generally for a fee.
Ask around your department, lab, or institution, Wordpress instances may already be available to you.

Resources, guides and help: https://firstsiteguide.com/learn-wordpress/

Platform: 
Installs on any server with a web server