countertrace is a userland, iptables QUEUE target handler for Linux 2.4 kernels running Netfilter, which attempts to give the illusion that there are multiple, imaginary IP hops between itself and the rest of the world. The imaginary hops that countertrace projects also have the ability to introduce accumulative, imaginary latency.
Firewalking is a technique developed by MDS and DHG that employs traceroute-like techniques to analyze IP packet responses to determine gateway ACL filters and map networks. Firewalk the tool employs the technique to determine the filter rules in place on a packet forwarding device
GeoTrace is a geographical traceroute utility. It is heavily based on GTrace.
Gnetutil provides a graphical interface allowing to use the usual ping, traceroute host and finger programs (GNOME).
KTroute is a KDE2 frontend to the traceroute command. It allows you to take full control on all options and settings in a comfortable and easy to use GUI. It should compile on any Unix flavours with QT2 and KDE2 libraries installed.
NETwork DUmp data Displayer and Editor for tcpdump tracefiles. It is a GUI-based tool that allows you to make detailed changes to packets in tcpdump tracefiles
Nttlscan is a quick network topology scanner and functions as a highly parallel traceroute. It randomly picks destination IP addresses and sends TCP or UDP probes. Returing ICMP messages are interpreted to reconstruct the route that packets take to their respective destination. Nttlscan can be used to construct virtual routing topologies for Honeyd.
Spinster builds a database representation of your personal network by spidering the fster site. Graphing tools are also available, that enable you to visually examine your network using Graphviz.
tcptraceroute is a traceroute implementation using TCP packets.
tknetool is a graphical frontend to finger, whois, ping, traceroute and nslookup. It is written in TCL/Tk and should run on any platform where TCL/Tk is avaiable.
TraceProto is a traceroute replacement written in c that allows the user to specify the protocol and port to trace to. It currently supports tcp, udp, and icmp traces with the possibility of others in the future.
Xtraceroute is a graphical version of the traceroute program, which traces the route your IP packets travel to their destination.