Yarn is a modern package manager split into various packages. Its novel architecture allows one to do things currently impossible with existing solutions: Yarn supports plugins; adding a plugin is as simple as adding it into your repository. Yarn supports Node by default but isn't limited to it - plugins can add support for other languages. Yarn supports workspaces natively, and its CLI takes advantage of that. Yarn uses a bash-like portable shell to make package scripts portable across of Windows, Linux, and macOS. Yarn is first and foremost a Node API that can be used programmatically (via @yarnpkg/core). Yarn is written in TypeScript and is fully type-checked.

Aprsdigi is a specialized Amateur Packet Radio (AX.25) UI-frame digipeater for the Automatic Position Reporting Systems, APRS(tm). It uses the Linux kernel AX.25 network stack as well as the SOCK_PACKET facility to listen for packets on one or more radio interfaces (ports) and repeat those packets -- with several possible modifications -- on the same or other interfaces. Aprsdigi can also use the Internet to tunnel connections among other APRS digipeaters and nodes using IPv4 or IPv6 UDP unicast or multicast.

GYP (Generate Your Projects) is a tool to generate native Visual Studio, Xcode, SCons and make build files from a description of a project in a simple JSON-inspired format. Its syntax is a universal cross-platform build representation that still allows sufficient per-platform flexibility to accommodate irreconcilable differences.

Foomatic is a printing system designed to make it easier to set up common printers for use with Debian (and other operating systems). It provides the "glue" between a print spooler (like CUPS or lpr) and your actual printer, by telling your computer how to process files sent to the printer.