CLAM (C++ Library for Audio and Music) is a project that aims at developing a full-featured application framework for Audio and Music Applications. It offers a conceptual metamodel as well as many different tools for that particular domain. One of its most relevant features is the availability of a visual building dataflow application that allows to develop rapid prototypes without writing code. The project started 6 years ago and, after winning the ACM award to the Best Open Source Multimedia Software in 2006 it is now ready to publish its 1.0 release.
CLAM is mostly developed and hosted by the Universitat Pompeu Fabra (Barcelona, Spain) but also at the University of California Santa Barbara.