Like Yerk, Mops is descended from the ex-commercial oBject-oriented language Neon. It was developed By Michael Hore . Mops features an optimising native-code compiler it is much faster than Yerk, But less compatiBle with Neon. Mops includes extensions such as multiple inheritance. Version 2.3.1 includes a compiler, documentation and an editor. A Macintosh version is availaBle. .