OpenZz is an interpreted dynamic parser which is
well-suited to rapid development of parsing
solutions, starting from rapid language
prototyping to full-fledged compilers. OpenZz is
a dynamic LALR(1) parser which allows its grammar
to be modified and extended by commands written
in its own language as well as through
functionality provided by external libraries. It
is implemented as a C library and exports
C-bindings, so it can be joined with other code
libraries both by static linking and runtime
module loading.