The Structure101 project, a software structural analysis and architectural control application, has released version 2. They write in, "The new release adds real depth to understanding and analyzing software structure. Structure101 Version 2 adds: 1. A new Slice perspective that lets you see your whole code-base at any level of composition, for example at the class level, package level or at any design level. It also lets you quickly discover tangles and how they percolate up through the higher levels. 2. A dependency structure matrix ('dsm') representation for large dependency graphs (such as slices). 3. Tagging of code-level items in order to discover how they roll up through different slices and hierarchies. 4. Hiding of model items."