Pligg
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Pligg Requires PHP and MySQL

Pligg is an open source content management system available for download at no cost. Pligg is based on PHP/MySQL, please see the server requirements list to check if your host is compatible with the latest version of Pligg. For additional support please visit the Pligg Forum where you can find help 24 hours a day thanks to our excellent development team and contributors. Pligg is free software, but you are welcome to donate any amount by clicking the button below.

Pligg Pro
The Pligg Pro shop is the official site to get premium Pligg Templates, Modules and Services. Many of the items in the shop are developed by the creators of Pligg, and a percentage of each sale goes toward further development of the Pligg Content Management System. In an effort to promote quality work on the Pligg Pro shop and to encourage the expansion of free downloads we require that all developers who sell work on Pligg Pro have donated modifications, modules or templates to the Pligg Forum.
Pligg Features
Multiple Authors

Multiple Authors

While most content management systems are designed for just a few authors to control the content, Pligg is designed from the ground up to have thousands of authors on each site.
Ajax Voting

Article Rating

Pligg started as a simple CMS that let users submit and vote on news articles, and that's still what we do best. Vote on articles that interest you and articles with enough votes will appear on the homepage of a Pligg site. Pligg offers a 5 star method for voting or the more traditional numbered voting as seen on sites like Digg, Mixx or Reddit.
Private Message

Private Messaging

A social network site isn't very social without the ability to communicate with each other. That's why we include a private messaging module with Pligg, so you can leave messages in your friends inboxes.
Commenting

Advanced Comment System

Not only can you comment on articles, but you can rate comments posted by other users. This effects the way that the comments are displayed, putting higher quality comments on top where they belong.
Modules

Module System

Add additional functionality to your Pligg site without having to alter the Pligg code. There is already a large library of modules to choose from that will greatly enhance your Pligg site.
Template System

Smarty Templates

We use the Smarty template system to keep our code seperate from the design. This makes updating your site to the latest version of Pligg easier, and designing new templates a breeze.
Spell Check

Spell Check

Our built in Spell Check system lets users check their spelling before submitting an article or comment.
Universal Language

Support for Multiple Languages

A single file handles all of the words used in Pligg, making it extremely simple to change the language by translating just one file. Pligg has also been designed so that users choose a language during the first installation step.
User Profile

User Profiles

Each user that signs up on a Pligg site gets their own profile page, where they can add contact information, personal messages, an avatar and other information.
RSS Feed

RSS Feeds

We're big fans of using RSS feeds to follow the latest news from our favorite sites and that's why we have added RSS functionality all over Pligg. You can subscribe to a user's voting trends, the front page, upcoming page and categories.
Import RSS Feeds

Import RSS Feeds as News Articles

Import an existing site into Pligg by using Pligg's RSS Import module. The Pligg RSS Import module checks subscribed RSS feeds automatically and adds them to your site. This technology gives you one more tool that will make your Pligg site less dependent on original content.
Sorting

Sort Articles

News items are categorized, tagged, timestamped and attributed to authors, making articles easier for users to find relevant and fresh news items that appeal to them.
Live Page

Live Ajax Newsfeed

Watch as news items appear instantly as updates become available on the "Live" page. Comments and Articles being added to your Pligg site are constantly appearing on active sites, letting your users keep an eye on the latest news available without having to even refresh their browser.
Search Engine Optimization

SEO Enhanced

We've done our best to help drive more traffic to your site by being as search engine friendly as possible. Our SEO methods will help get your site indexed faster and more often.
URL Blacklist

URL Blocklist

Don't want to have your competitors submitting links to their sites? Blacklist them with Pligg's built in URL Blocklist capability.