phpx augments PHP syntax with powerful metaprogramming constructs such as mixins, class-level eval()/macros, pattern matching, annotations and interface delegation. It also implements a simple compiler for converting this extended syntax to standard PHP. The "compiled" code can be cached to disk, allowing features to be used without any runtime performance penalty.
cencode encodes a stream or a file into quoted c-string escape sequences, suitable for use directly in C code. It is a universal alternative to dedicated export formats like XPM, unportable resource forks, linker flags, and Windows resources where dynamic loading of external data is not possible or undesired.
The Java Exorcist is a simple Java syntax extender. By default (with no extensions), it only compiles standard Java code, but with each extension to Exorcist a new Java language construct can be defined or redefined. The Exorcist preserves line numbering at runtime and at compile-time. It can be invoked on the command line and through an ant task.