libgedit-gtksourceview is a library that extends GtkTextView, the standard GTK widget for multiline text editing. This library adds support for syntax highlighting, undo/redo, file loading and saving, search and replace, a completion system, printing, displaying line numbers, and other features typical of a source code editor.

The POCO C++ Libraries are a collection of open source C++ class libraries that simplify and accelerate the development of network-centric, portable applications in C++. The libraries integrate perfectly with the C++ Standard Library and fill many of the functional gaps left open by it.

Ruff is a linter for Python that includes implementations of many common checks implemented by flake8, flake8 plugins, and pylint.

This is the debugger underlying debugpy, which is used by IPython and Spyder, among others.

node-pac-proxy-agent provides an `http.Agent` implementation that retreives the specified PAC proxy file and uses it to resolve which HTTP, HTTPS, or SOCKS proxy, or if a direct connection should be used to connect to the HTTP endpoint.

node-args makes creating command line interfaces a breeze.