LazySync is a file-synchronization program written for handheld devices using the SavaJeXE Java operating system. It attempts to offer similar functionality to HotSync and ActiveSync of the Palm and CE platforms, and supports synchronization via an existing TCP/IP network connection between handheld and host.
Spana/Panorama is a protocol and a reference implementation for a new peer-to-peer network with the primary goals of providing anonymity and a robust network. Some of the implemented features are: anonymous file transfers (on both ends) and news (NNTP), RSA-based virtual identities for file authentication, advanced file indexing for searching (such as on bit rates), and automatically resumed downloads from multiple hosts using cryptographically strong checksums on files (cf. heuristics based on filenames) for security and flexibility.