<div dir="ltr">I've generally used Eagle, one of the best supported and documented design packages out there. Free for non-commercial use too.<br><br>If you're going to send a board design off for fabrication its going to need to be in Eagle format. The simulation, auto-router, and editing functions work well and the learning curve isn't very steep. Pretty much every component manufacturer offers footprints that import easily.<br><br>You do have to pay for commercial use or large boards though.<br></div>