Wireshark is a network "sniffer" - a tool that captures and analyzes packets off the wire. Wireshark can decode too many protocols to list here.

Webissues is a system supporting team collaboration across the Internet. It can be used for storing bugs and other information with customizable attributes, comments and file attachments.

dnscrypt-proxy is a flexible DNS proxy, with support for modern encrypted DNS protocols such as DNSCrypt v2 and DNS-over-HTTPS.

Cuneiform is an OCR system. In addition to text recognition it also does layout analysis and text format recognition.

The Berkeley Open Infrastructure for Network Computing (BOINC) is a software platform for distributed computing: several initiatives of various scientific disciplines all compete for the idle time of desktop computers. The developers' web site at the University of Berkeley serves as a common portal to the otherwise independently run projects.

cpufreqd is meant to be a replacement of the speedstep applet you can find on some other OS, it monitors the system status and selects the most appropriate CPU level. It is fully configurable and easily extensible through the many available plug-ins (more to come). Despite its name it can be used to control also the NForce2-Atxp1 voltage regulator and the core and memory clock for NVidia cards (see README.Debian).