There are two open-source projects available here.

The latest version of gnetman for gEDA is gnetman_20031226.tar.gz.

The latest version DataDraw, which is used to build data structures for gnetman and other EDA projects is datadraw_20031226.tar.gz

There is a README file in the gnetman directory that explains how to use it. Basically, the current version supports advanced SPICE netlisting from gschem. The primary use so far has been for complex IC design. Supported features include multi-level hierarchy, instance arrays, and buses. If you're just doing flat designs for PC boards or spice simulations, the usual path is to use the spice-sdb netlister for gnetlist.

The long term goal of gnetman is far greater. Two projects under consideration include a schematic generator, and a technology mapping back-end for Icarus Verilog. Basically, gnetman is a netlist manipulation database well suited for low-level manipulation of netlists. Reality dictates that I wont be able to start on such projects until at least March of '04.

If you have questions or ideas for either project, feel free to send me e-mail at bill@viasic.com. I've also been reading the geda-user mailing list from the geda.seul.org site.

Bill Cox