ngrep strives to provide most of GNU grep's common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to match against data payloads of packets. It currently recognizes IPv4/6, TCP, UDP, ICMPv4/6, IGMP and Raw across Ethernet, PPP, SLIP, FDDI, Token Ring, and null interfaces, and understands BPF filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.
Tellu is inventory management software that collects hardware and software information automatically from networked servers and workstations, and stores collected data in MySQL database where data is easily readable using a comprehensive user interface usable by any modern Web browser. Devices (like routers and switches), peripherals (like video projectors and displays), and service providers (like hosting and maintenance) can also be stored in the database using a Web interface called Tellu Skin. Inventory management is only one part of Tellu's capability, Tellu offers the possibility to group together workstations, servers, devices, passwords, file attachments, and others to form a faction. For example, a faction can contain all the stuff that a development team needs in their development environment.
mwcollect is an easy solution to collect worm-like malware in a non-native environment like FreeBSD or Linux. The first versions were used to collect binaries for botnet monitoring, and bots are still what it is mostly collecting. Some people consider it a next generation honeypot; however, that comparison often leads to the misunderstanding that computers running mwcollect can actually be infected with the malware, which is not the case.