The KiWi core system is a flexible platform for building different kinds of semantic social software applications on top (currently the Semantic Wiki and the TagIT application). It provides all the core services required in such applications, like editing and tagging, the storage of content and associated meta-data, its own triple store, transactions and versioning over content and meta-data, a linked open data server, and many small features semantic social software developers will like (like convenience services for working with ontologies or SKOS thesauruses, etc.).
SitemapGen4j is a Java library to generate XML sitemaps. It supports gzipped output, sitemap validation, and sitemap index generation. It can also generate Google-specific sitemaps, such as Mobile sitemaps, Geo sitemaps, Code Search sitemaps, Google News sitemaps, and Video sitemaps.
Compare Ikea Prices is a Firefox addon that displays prices from Ikea stores in other countries and converts the prices to Euros. It works for most Eurozone countries. After installing, it has to be turned on by checking an "Enable price comparing" checkbox in Tools > Compare Ikea prices.
PHP Weby directory script provides many options for running a directory, a catalog of sites, or simply a link exchange with other sites. Users can submit their favorite sites and optionally charge for the review. It offers many features including an integrated payment system with PayPal, link validation, SEO URLs, e-mail templates, a Smarty-driven template system, unlimited categories and subcategories, reciprocal linking, a link editor, compatibility with phpLD templates, and more.
lamos is PHP-based software for bookmark management and exchange. Links/bookmarks for multiple users are stored in a database and can be retrieved and added via a Web frontend. lamos supports hierarchical categories for links and includes a simple search function. The idea is to allow synchronization of bookmarks between different browsers, systems, and places with a single service that can be accessed from everywhere.