2. ComplexityLibrary for calculating the complexity of PHP code units
4. StateThe State design pattern. Implemented in PHP and with style.
5. Code UnitCollection of value objects that represent the PHP code units
7. PhplocA tool for quickly measuring the size of a PHP project.
8. PhpcpdCopy/Paste Detector (CPD) for PHP code.
13. FoalTool to find lines eliminated by OpCache's bytecode optimizer
15. Php Code CoverageLibrary that provides collection, processing, and rendering functionality for PHP code coverage information.
18. Php File IteratorFilterIterator implementation that filters files based on a list of suffixes, prefixes, and other exclusion criteria.
21. ComparatorProvides the functionality to compare PHP values for equality.
22. MoneyValue Object that represents a monetary value (using a currency's smallest unit).
23. ExporterProvides the functionality to export PHP variables for visualization
24. EnvironmentProvides functionality that helps writing PHP code that has runtime-specific (PHP / HHVM) execution paths
30. TypeCollection of value objects that represent the types of the PHP type system
36. shakuTool to automatically generate type-safe Collection and CollectionIterator classes
41. bugminerMines a source code repository for bug and churn information.
43. global-stateSnapshotting of global state, factored out of PHPUnit into a stand-alone component