WP:Collections

The Collection extension is an optional MediaWiki software component installed on Wikipedia, which enables users to create lists or collections of articles via a "Book" page containing links to them. Its main component is the [https://en.wikipedia.org/w/index.php?title=Special:Book&bookcmd=book_creator Book Creator] tool.

The Mobile sharing project "Gather" provided collections of article links in a different format. The project was stopped before full rollout.