noflushd is a simple daemon that monitors disk activity, spins down disks whose idle time exceeds a certain timeout, and stops writes to them in order to keep them spun down as long as possible. It's mainly used on laptops to save power, but can also be useful to desktop users with noisy hard disks. noflushd requires a kernel thread named kupdate which is present in Linux kernel version 2.2.11 and later. For earlier kernels, bdflush version 1.6 provides equal functionality.
NoodeInstaller attempts to make distributing software easier for people who don't know how to use make and RPM. It is simpler and less powerful than these traditional methods, but it should suffice for most people. Its features include NoodleUnInstaller (for automating uninstalls), TkNIAK (a GUI program for making the install scripts), and InstallMaker (for making self-extracting installers).
npadmin is a command line tool to administer network printers. It is based on the concepts of JetAdmin and other vendor's tools but is designed to be scriptable. It uses SNMP to query the common printer MIB (RFC 1759) and return information about the printer. There is a surprising amount of information available in the common printer MIB and since the vendors all use their private MIBs, this appears to be the only tool that makes it available.
NSA Security-enhanced Linux is a set of patches to the Linux kernel and some utilities to incorporate a strong, flexible mandatory access control architecture into the major subsystems of the kernel. It provides a mechanism to enforce the separation of information based on confidentiality and integrity requirements, which allows threats of tampering and bypassing of application security mechanisms to be addressed and enables the confinement of damage that can be caused by malicious or flawed applications. It includes a set of sample security policy configuration files designed to meet common, general-purpose security goals.
nscache is a simple program to browse the Netscape cache directory with a GTK UI. It shows the contents of the browser cache in a three level hierarchy of files: protocols, servers and documents or in sorted list. nscache permits you to view files from the cache, remove files, or gather various information about specific files.