Pligg is a CMS that focuses on user-generated news.

Unlike other CMS like WordPress, Pligg is entirely geared towards having numerous users which all contribute to the site (think Slashdot, Digg or Reddit).

It only requires PHP 5 and MySQL to run correctly.

What you’ll like about Pligg:

• Built-in rating AND comment rating system
• Kick-ass RSS support; users can subscribe to categories, the front page, and more
• User management, profiles, private messaging, etc – all inside the default package
• Available in multiple languages
• Active community

What you won’t like:

• Relatively few add-ons (or modules), and many of them have a price tag
• Infamous previous versions create doubt about Pligg’s safety even now

• Website: http://www.pligg.com/
• Demo: http://www.pligg.com/demo/

Aloha is a powerful content editor which allows editing pages on the fly.

Although the front page of their website nearly crashed Opera, the editor works on Chrome; Safari; FireFox; and (wait for it) Internet Explorer.

Aloha works with WordPress too, and the thought about editing content on the fly would make any writer’s inner child weep in anticipation.

Furthermore, if you believe what an imaginary user says about Aloha, using this editor is like “having our own supersonic guinea pig.”

• Website: http://www.aloha-editor.com/index.html
• Demo: http://www.aloha-editor.com/demos.html