Where can i download Malwarebytes?

I go to this website a href="http://malwarebytes.org/" rel="nofollow"http://malwarebytes.org//a and i click on "Download Free Version" and then it takes me to this website a href="http://majorgeeks.com/download.php?det=5756" rel="nofollow"http://majorgeeks.com/download.php?det=5…/a and it says it costs $24.95. I want one that i don't have to pay. How do i download it? Also is it ok to have Microsoft Security Essentials and Malwarebytes on at the same time?