Builds of ooRexx and its associated components are performed nightly. They are available here.
Currently ooRexx and its components are built on a variety of machine architectures and operating systems. Some of these machines are Linux KVM virtual machines and some are real machines. The real machines exist in a variety of locations and in most cases are only loaned to the ooRexx Project, thus they may come and go over time.
Nightly builds are always performed from the SourceForge Subversion repository trunk for a component (interpreter, docs, etc.). When a major branch of the code is performed then builds for that branch are also performed nightly. Beta and release builds are performed by hand by the ooRexx Team members.