Sharehound is a network file systems indexer and Google-like searcher written in Java and based on Apache Lucene. It currently supports SMB file shares (i.e. MS Windows-based network shares) and FTP resources. A Web UI is used for search and crawl monitoring. An RSS feed is provided for search results that include deleted files info.
Vayala is a multi-purpose chat client for developers. It offers a platform and an easy to use Eclipse plugin. Based on multicast technology, each client is automatically connected to one chat client network without a central server or much configuration or installation effort. You add the Eclipse view, and you are connected to your colleagues. In addition to basic chat functionality, you can also exchange files, graphics, and much more.
MUTE File Sharing is an anonymous, decentralized search-and-download file sharing system. Several people have described MUTE as the "third generation file sharing network" (From Napster to Gnutella to MUTE, with each generation getting less centralized and more anonymous). MUTE uses algorithms inspired by ant behavior to route all messages, include file transfers, through a mesh network of neighbor connections.
JPartialDownloader is a program for downloading files using HTTP[S]/FTP/BitTorrent protocols. It supports many features like resuming unfinished downloads, retrying, and multi-connection HTTP[S]/FTP. What makes this program different from similar programs is that you can download any part of a file.