Unlike international auxiliary languages for global uses, they are intended to serve a limited linguistic or geographic area.
The following projects are examples of controlled English: Visual languages use symbols or movements in place of the spoken word.
Engineered languages are devised to test a hypothesis or experiment with innovative linguistic features.
The following two examples were created for Ill Bethisad, an alternate history project.
Until 2005, there were also versions of Wikipedia in the constructed languages Toki Pona and Klingon, but these have been deleted.