Here's another website that lists all the candidates:
http://politics1.com/p2012.htmI compared your list to theirs. They are missing the Freedom Socialist Party, which you listed. Your list is missing:
Grassroots Party (Jim Carlson/George McMahon)(no website, I don't think they are on ballot)
Objectivist Party (Tom Stevens/Alden Link)
http://www.objectivistparty.us/Party of Socialism and Liberation (Peta Lindsay/Yari Osorio)
http://www.pslweb.org/votepsl/2012/Reform Party of Kansas (Chuck Baldwin/Joseph Martin)
http://chuckbaldwinlive.com/home/Socialist Equality Party (Jerome White/Phyllis Scherrer)
http://socialequality.com/Socialist Workers Party (James Harris/Maura DeLuca)
http://www.themilitant.com/index.shtmlAnd there are a bunch more independents listed there.