I am looking for some software to help my SE efforts. I would like something that can keep track of SER for a lot of my keywords. Give me keyword density, find my links out there, help find links and create and manage a links page. I have looked a Arelix but i want to know if there is something better out there.

>something that can keep track of SER for a lot of my keywords.

free here
http://www.digitalpoint.com/tools/keywords/

>Give me keyword density

IMHO that is typically not much of a useful stat.

>find my links out there

the keyword tool also tracks links
http://www.digitalpoint.com/tools/keywords/

>help find links and create and manage a links page. I have looked a Arelix but i want to know if there is something better out there.

Arelis is probably one of the better ones at that.

I am addicted to the tool Aaron recommended, and use it over 10X daily. Definately worth signing up - you have nothing to lose!