Ic Design Software. Part of a tool set from alliance which is probably the best open source software for ic design. All products are developed by experienced pcb design engineers who are familiar with the emerging technology needs of the eda industry.
Hades is a circuit design and simulation software for windows. Custom ic analog rf design. Dreal is the companion software to view cif and gds.
As a mixed signal analog designer i m using and have used lots of tools like hspice spectre eldo ams.
Just like the protel software this one is also by altium. All products are developed by experienced pcb design engineers who are familiar with the emerging technology needs of the eda industry. Lambda based layout editor allowing conversion to cif and gds with appropriate technology files. Hades is a circuit design and simulation software for windows.