WebGlimpse is a scalable, feature-rich search engine for indexing your Web site or any collection of local and remote sites you choose. Features include customizable output formats, custom ranking/ordering of hits, fuzzy matching, boolean queries, a Web administration interface for multiple archives, logging of queries, caching of results, and more. Localized search interfaces are provided in multiple languages including Spanish, German, French, Italian, Norwegian, Finnish, Russian, Hebrew, and others. It supports 3rd party filters for indexing PDF, Word, and Excel files. It is free for academic and most nonprofit users.
Doodle is a desktop search engine for Linux. It searches your hard drive for files using pattern matching on meta-data. It extracts file-format specific meta-data using libextractor and builds a suffix tree to index the files. The index can then be searched rapidly. It is similar to locate, but can take advantage of information such as ID3 tags. It is possible to do full-text indexing using the appropriate libextractor plugins. It also supports using FAM to keep the database up-to-date.