SearchAssist is a simple but practical search engine application that uses a ternary search tree. It uses Java's dynamic loading feature to make the search engine highly customizable, and uses takes Mozilla bookmarks as input. A Swing UI allows users to enter search words and view the results.
SlimSearch is a quick and easy search extension for Firefox. It allows you to perform searches on text selected with the mouse by using the contextual (right-click) menu. You can do normal searches, dictionary searches, address searches, Froogle, and many other kinds. Google is extensively used for most of the searches, but other specialized search engines are used too. The focus is on simplicity of utilization: less is more.
Ojax provides an OAI-PMH harvester to harvest metadata from multiple repositories and builds a single searchable Lucene index of this data. OJAX provides a dynamic user experience enabled by Ajax and full OpenSearch integration with the IE 7 and FireFox 2 search fields. It supports OpenSearch Discovery, OpenSearch Atom results, and OpenSearch Search Suggestions. Loosely coupled Web Services and OpenSearch Atom standard allow integration with a range of VLEs, CMSs, institutional repositories, and portals.
Urd is a Web-based Usenet binary download manager. It stores the newsgroup information in a MySQL database and aggregates the articles into sets of a single download (e.g. one album or movie). The Web interface can be used to search with regular expressions. It uses its own downloading daemon that has support for scheduling downloads and updating databases. URD can also download directly from NZB files and even create NZB files. Further features include custom scripts, multiple languages, a template based Web interface, support for multiple servers, automatic par2 and unrar support, and an intuitive user interface.