A standards compliant HTML filter library written in PHP. HTML Purifier will not only remove all malicious code (XSS) with a thoroughly audited, secure yet permissive whitelist, but it will also make sure your documents are standards compliant.

A wrapper collection for GD library in PHP. Defines a set of methods for flip, crop, resize, stamp and more, easily.

phpMussel is a PHP script designed to detect trojans, viruses, malware and other threats within files uploaded to your system wherever the script is hooked, based on the signatures of ClamAV and others. Works for any system with PHP+PCRE installed.

An e-commerce platform built with PHP, jQuery and HTML5. No junk, minimal code, and almost no third party components. Easy to install, extremely easy to use and easy to modify.

A free sitemaps generator that generates RSS-based, TXT-based and HTML-based sitemap files. It will spider your website and also your filesystem.

Silex is a PHP microframework featuring an intuitive and concise API, an extension system, a service container, a services type provider, a controller type provider, and more.

A portable public domain password hashing framework for use in PHP applications.

Admidio is a free open source user management system for websites of organizations and groups. The system has a flexible role model. The system contains several modules such as member lists, event manager, guestbook, photo album and download area.

A PHP class for querying the Twitter API and rendering tweets as an HTML list.

CalendR is an object oriented Calendar management library on top of PHP5.3+ Date objects. Use it to deal with all your needs for calendars and events.