@1 Links Submission and Approval System I lets visitors submit free links to your site. Their links will only be added to the main datafile once you have viewed and approved them. A password- protected admin interface for searching, adding, marking, approving, holding, editing, and deleting is included. The user may also upload an optional site logo.
Java Search Engine is a server-side search engine program for Web sites written completely in Java. It features HTML and PDF indexing, a built-in Web crawler, international encodings support, words and phrases search, and returning results as quotations with highlighted words (like Google). It is available as EJB, JSP, servlet, or Java API library. For non-Java enviroments, it is available as an XML server with XSLT support.
WebSuck goes through a Web page, following links and making a list of the datafiles encountered along the way. It is useful for such tasks as downloading large image galleries without clicking all the links yourself. It can output a file list in a format appropriate for wget, and another for GetRight. It can be used either via a Swing GUI or in console mode.
Net::Z3950::SimpleServer is a Perl module which implements the server side of the Z39.50 (information retrieval) protocol. It hides the complexity of network exchanges, packet serialization, and session handling. You are required only to implement simple callbacks to support searching and record retrieval. It is the basis of the "Zoogle" project, which is a Z39.50 gateway to the Google web index.
Dowser is a Web research and archiving tool that clusters results from search engines, associates words that appear in previous searches, and keeps a local cache of all the results you click on in a searchable database along with summaries and links to related information. It helps you to keep track of what you find, with no advertising.