A service connection to PackageData.net. It supports pulling package information, searching for packages, and has limited support for installing packages. Generally operates on the ID parameter of packages

Qwant API connection

A service connection to the Stack Exchange API. Supports the majority of the functions defined in the API

A hacked-up ServiceConnection to the Wolfram Community website

A service connection to the YouTube Data API (https://developers.google.com/youtube/v3/docs)

A simple package to make simple documentation

A light-weight object framework for Mathematica