httpcmdd provides a way to have a (Web) browser user interface to programs running on the same machine as the browser. httpcmdd PEEKs the headers of the incoming message from the browser and finds a program that matches the request received. Programs are run with privileges of the user running the browser. Each user may have their private commands available in their home directory in addition to the common programs installed to the system (if any). Some programs may be placed in a special directory, and will then be run with root privileges.
Jif (Java + information flow) is a security-typed programming language that extends Java with support for information flow control and access control, both at compile time and at run time. Static information flow control can protect the confidentiality and integrity of information manipulated by computing systems. The compiler tracks the correspondence between information the policies that restrict its use, enforcing security properties end-to-end within the system. After checking information flow within Jif programs, the Jif compiler translates them to Java programs and uses an ordinary Java compiler to produce secure executable programs.
netgviz is a set of scripts that allows you to easily make graphs illustrating layouts of computer networks at ISO/OSI layer 3. It parses a text file with a list of network nodes with their addresses and generates the data in dot format, which is suitable for a Graphviz set of tools. You can then use Graphviz to draw a graph illustrating the network topology.