We present a development environment for Regulus, a toolkit for building unification grammar-based speech-enabled systems, focussing on new functionality added over the last year. In particular, we will show an initial version of a GUI-based top-level for the development environment, a tool that supports graphical debugging of unification grammars by cutting and pasting of derivation trees, and various functionalities that support systematic development of speech translation and spoken dialogue applications built using Regulus.