OpenSourceClassifieds is LAMP software for creating highly-scalable classified ad websites. It supports general ads or specialized ones through plugins (cars, jobs, real estate, dating, etc.), many languages, lots of options for customization, integration with TinyMCE for WYSIWYG editors for rich formatting, extensibility through plugins (Google Analytics, Google Maps, Time elapsed, etc.), an interchangeable look and feel with themes, search engine (SEO) features (Sitemap.xml generation, robots.txt, nice URLs), an integrated search engine with full text support, an unlimited number of categories and sub-categories, and out-of-the-box anti-spam facilities (Akismet, Re-captcha).
Show Lockerz is a simple Joomla! module that displays pictures posted by Facebook and Twitter users on Lockerz (formerly Plixi/TweetPhoto). It displays the public or personal feed, shows pictures in single or multiple picture modes, displays the description when the mouse is over the picture, and displays large versions using Highslide JS or the Lockerz Website.