Sharehound is an open-source multiplatform network file systems indexer and searcher with Google-like query syntax. Currently supported protocols are SMB (file shares in MS Windows-based networks) and FTP. Web UI is used for search and some administration.
It doesn't consider file contents - only file path and name are indexed. Historical data (deleted files and offline hosts info) is kept. Search can be limited to single directory and optionally its subdirs. An RSS feed is provided for search results which allows to have notifications about added, changed and deleted files of interest.
These details are provided for information only. No information here is legal advice and should not be used as such.