RUGE [1] is another open source PROLOG framework for functional and load testing. Brendon McCarthy originally developed it for testing financial applications at American Express.

Brendon presented it at the 2013 Workshop on Domain-Specific Languages for Financial Systems [2]. One observation made by the Haskellers was that PROLOG approaches such as these are attempting to solve a problem that has already been solved by QuickCheck [3].

[1] http://bmccarthy.bitbucket.org/ruge/faq.html [2] http://dslfin.org/ [3] https://en.wikipedia.org/wiki/QuickCheck