The D-Net Software Kit is an Open Source service-oriented solution for the construction of customized Data Infrastructures. Data Infrastructures address the need increasingly manifested by research communities to operate over the integration of content collected from several information sources (such as institutional repositories endowed with OAI-PMH interfaces, or archives of research data).
FileWatcher is a ftp search engine which monitors more than 450 million files on more than 5,000 ftp servers. It allows you to search for files by specifying parts of the filename or other criteria.