By default Grails comes with an Ant build file to control your web application. For some of us this seems like a step backwards in technology (although apparently not for Graeme Rocher the Grails mastermind). Even though Grails doesn't support maven 1 or 2, you can get support for dependency resolution via Ivy (see Using Ivy for Dependency Resolution). Another option available is called Maven Tools for Grails (MTG). It sounds pretty promising and an improvement over Ivy, but their most recent release (v0.2) appears to work only with Grails 0.5.6 and 0.6; the current release of Grails is 1.0-RC1.