Document summarization system. By adding document content to system, user queries will generate a summary document containing the available information to the system.
DiskAt is disk/media catalogue app supporting multiple categories per item, good search and features which allow to use it as Movie/DVD/etc database. Written with PHP/Python/SQLite.
PHP Security Scanner is a tool written in PHP intended to search PHP code for vulnarabilities. MySQL DB stores patterns to search for as well as the results from the search. The tool can scan any directory on the file system.
a group of network tools aimed to promote, search and rate shared resources. Basicly, it consists of console indexing utilities and web front-end to the database.
Xapian is a Search Engine Library, written in C++ with bindings for Perl, Python, PHP, Java, Tcl, C# and Ruby. Xapian allows you to easily add advanced indexing and search facilities to your applications. See www.xapian.org for more information.