The company has said that it will make programming for that software compatible with its current Windows software, which already includes some object-oriented features.

A more complex version, showing some of Vala's object-oriented features:

The Aldor language combines imperative, functional, and object-oriented features.

It offers functional, object-oriented and imperative features.

Version 4 of S, often abbreviated S4, provides advanced object-oriented features.

Apple's Hypercard program, which allows Macintosh users to store information on computerized notecards, incorporates some of the object-oriented features.

In designing Enterprise Objects developers can leverage the object-oriented feature known as inheritance.

It also handled object-oriented features like classes, subclasses (inheritance), attributes, and methods.

About 1985, SMALL had some object-oriented features added to handle structures (that were missing from the early language), and to formalise file manipulation operations.

Lisp was the first language to normalize object-oriented features, despite having been designed years before object-oriented ideas were invented.