There have been a wide number of Haskell variants produced, exploring new language ideas, including:

Various variants produced from 1982 to 2009, over 1000 produced.

Numerous variants of the Mamba have been produced, as well as vehicles derived from it.

Of the five variants produced the 3A-2500 was the most numerous.

This rule (and similar variants) produces an optimal solution well before the enumeration tree is fully explored.

A variant of the tree produces white coloured fruit.

Three variants of the camera were produced, each of which was available with a quartz date imprint back.

Another compensated variant was produced, known as the Glock 18C.

The variants described below produce the DA by separate derivations.

The most numerous variant with over 1,935 units produced.