Constraints Manager

Constraints-Driven Design Methodology
The Constraints Manager guides engineers through a fully integrated, constraints-driven design methodology to meet high-speed performance requirements, reducing design costs and time-to-market by eliminating unnecessary prototypes and re-engineering cycles.
Zuken's Constraints Manager provides an easy-to-use, spread-sheet-like user interface, supporting constraint definition, sharing and updating, and cross-probing to schematics and layout.