node-gyp is a cross-platform command-line tool written in Node.js for compiling native addon modules for Node.js.

Network UPS Tools (NUT) is a client/server monitoring system that allows computers to share uninterruptible power supply (UPS) and power distribution unit (PDU) hardware. Clients access the hardware through the server, and are notified whenever the power status changes.

Fcitx is an input method framework with extension support, which provides an interface for entering characters of different scripts in applications using a variety of mapping systems.

Unconstrained Non-linear Optimization toolkit for Octave, a numerical computation software. Included are functions to do linear least square fitting on data points, nonlinear regression using the Levenberg-Marquardt algorithm, Prony's method for non-linear exponent fitting and many more.

It is used in routers and Internet gateways to automate the task of keeping your DNS record up to date with any IP address changes from your ISP. It can also be used in installations with redundant backup connections to the Internet.

When persistence mode is enabled, the daemon prevents the driver from releasing device state when the device is not in use. This can improve the startup time of new clients in this scenario.