pcb trace freeware downloads
KiCad for Mac OS X
8.0.2 freeware downloadMake professional PCB layouts with up to 32 copper layers. KiCad ... capable of routing differential pairs and interactively tuning trace lengths. KiCad comes packed with many useful features ...
Sonnet Lite
18.53 freeware download... or stripline filters MIM capacitors Mounting pad characterization PCB trace crosstalk analysis Planar couplers/splitters Package resonances Any arbitrarily ...