Namazu is a full-text search engine intended for easy use. Not only does it work as a small or medium scale Web search engine, but also as a personal search system for email or other files. Namazu broadly consists of three components, mknmz that creates index before searching (written in perl), namazu which searches documents based on the created index - command line script (written in C), and namazu.cgi, a CGI scrip for searching documents based on the created index (written in C).
Excite for Web Servers makes it easy for you to add searching -- Excite, Inc.'s advanced concept-based searching -- to your Web site. Excite for Web Servers provides a simple Web-browser interface for doing all the things necessary to enable concept-based searching of collections of documents such as administering, indexing, and searching over the collections. In particular, one can: define a document collection -- that is, specify a set of documents to be considered a single collection over which one can search, design customized pages for displaying to users who wish to search over that collection, index that collection, monitoring the progress, and search the collection.