IsoStack free software tool is for PCB stackup design. Saves design files locally or shares via email in standard formats. Includes up-to-date database of globally available constructions and electrical data on high-speed digital Isola materials. Built-in pressed thickness calculator offers automatic design checks for hybrid builds and warnings for insufficient prepreg and glass stop. Features equation-based calculators for targeting desired impedance. Is available online in beta version.

Isola, www.isola-group.com/isodesign/