This Schematic Tool is online:

http://www.digikey.com/en/resources/scheme-it?wt.medium=email&wt.mc_id=em_Scheme_IT_Sept14&wt.z_email=18101_SchemeITBodyLink_EVN142B0US&wt.v_sub=2792557

(I thought it might be useful, or have some good ideas?)
The terms and conditions did not seem too bad?

- Brian