The reference implementation of Python has been designed to be easy to port to other languages. Since PlanOut’s initial release, it has been ported to all major Web programming languages
These implementations of PlanOut have been used routinely by major websites and are considered stable.
Java: full-featured implementation of PlanOut by Glassdoor, including experiment lifecycle management and code review.
PHP: Vimeo’s implementation of PlanOut. Includes native API with PSR logging.
These implementations are currently under development, and may change substantially in the future.