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Print binary sFlow feed to ASCII, or forward it to other collectors. This tool receives sFlow data, and generates either a simple-to-parse tagged-ASCII output, or binary output in tcpdump(1) format. It can also generate Cisco NetFlow version 5 datagrams and send them to a destination UDP host:port, or forward the original sFlow feed to a number of additional collectors.

Siproxd is a proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections possible via a masquerading firewall. It allows SIP clients (like kphone, linphone) to work behind an IP masquerading firewall or router.

The urelay tool is a simple connection forwarder which may work with many different protocols - TCP, Unix sockets, IPX - in general, anything that has a client or a server supporting Prof. Daniel J. Bernstein's UCSPI framework - http://cr.yp.to/ucspi.html

TCPWatch is a utility written in Python that lets you monitor forwarded TCP connections or HTTP proxy connections. It displays the sessions in a window with a history of past connections. It is useful for developing and debugging protocol implementations and web services.

Mono.Zeroconf is a cross platform Zero Configuration Networking library for Mono and .NET. It provides a unified API for performing the most common zeroconf operations on a variety of platforms and subsystems: all the operating systems supported by Mono and both the Avahi and Bonjour/mDNSResponder transports.

UNFS3 is a user-space implementation of the NFSv3 server specification. It provides a daemon for the MOUNT and NFS protocols, which are used by NFS clients for accessing files on the server. Since it runs in user-space, you can use it in a jail.

usbredir is a protocol for redirecting USB traffic from a single USB device, to a different (virtual) machine than the one to which the USB device is attached. See usb-redirection-protocol.txt for the description / definition of this protocol. With the official 0.3 release the protocol is now frozen (only extensions advertised through capabilities can be added from now on).

VNC stands for Virtual Network Computing. It is, in essence, a remote display system which allows you to view a computing 'desktop' environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures.

vnStat is a console-based network traffic monitor. It keeps a log of hourly, daily and monthly network traffic for the selected interface(s). However, it isn't a packet sniffer. The traffic information is analyzed from the proc(5) filesystem. That way vnStat can be used even without root permissions.

Slrnconf is a graphical configuation utility for the newsreader slrn. It is intended to make the hairy configuration of SLRN a bit easier. Slrnconf will try to read your ~/.slrnrc at startup. If you're using a different file, just open it via File -> Open. There are no command line switches.