Wikipedia and its sister projects are organized in the Wikimedia Foundation.

Loft-2, a sister project with 496 units, sold out in two and a half days.

It shares the same folder as Ilium, so I guess it's some kind of sister project.

It is a sister project to the Korrespondent printed weekly magazine also containing the latter's reduced free online version.

Many of these are directly analogous to Wikipedia's sister projects.

A sister project known as 33 Charlotte Street was later built on the adjoining site, and has a very similar facade.

It is a sister project of the Simple English Wikipedia.

Since 2009 independent sister projects were founded in many other cities around the world.

The site was originally hosted on the servers of its sister project, Filipiniana.net.

There is also a sister project called Living River which runs from 2006 to 2010.