The EGS Archive format was originally developed by Hewlett Packard as part of their general purpose CAD drawing program: EGS (Engineering Graphics System.) EGS is now obsolete but the archive format lives on in successors such as HP's MDS, Series IV and ADS layout tools.
Most of our EGS related translators were obsoleted years ago - we still have three that are used by existing clients
ASM 800 is a bidirectional translator between archive and AutoCAD's DXF file format.
Piglet2EGS is a bidirectional translator between EGS Archive and the Piglet format.
Piglet2GDS is a bidirectional translator between GDSII and the Piglet format.