FileTornado is a set of CGI scripts coded in Python that provides a Web-based file repository. FileTornado provides member registration facilities and supports file uploading, voting, and comment functionality for members. The code is derived from the CGI scripts run on http://screammachinescentral.com.
Keyman is a key manager for storing Freenet SVK keys; it keeps all SVK private keys in a encrypted form. This could even work with any type of public/private key encryption (although it focuses on Freenet) and can hopefuly be extended so it can use any future Freenet public/private key types.
XSatellite GUI for AGSatellite, is a GUI for the Linux version of AudioGalaxy Satellite. It allows you to view the progress of your transfers (file, size, transfer rate, percentage), search for songs and queue them directly from the client (no browser needed), configure AGSatellite, and listen to the songs you are donwloading.
ncp can copy files between networked computers and accounts without hassles (nor features like compression and encryption), and you do not even have to name the target machine if it is in the same LAN. npush and npoll can copy files (and pipe data) between machines without having the specify or even know the machine name in advance.