This paper introduces a parser system for the meta grammar formalism of Extensible Dependency Grammar (XDG). XDG is a generalisation of Topological Dependency Grammar (TDG) (DuchierDebusmann01). The XDG parser system comprises a constraint-based parser for all possible instances of XDG, a statically typed grammar input language, and a flexible backend for handling parser output. A powerful graphical user interface provides for easy accessibility of all the functionality of the system. In the future, we will use the XDG parser system to accomodate new dependency grammar formalisms such as Semantic Topological Dependency Grammar (STDG), and to experiment with other interesting XDG instances.