The name Cate is a girl's name of English, Greek origin meaning "pure". Cate and is often added to lists like Supermodel Baby Names and discussed in our forums with posts like "Baby a Day".
From the experts:
Time was, even C-starting Catherines who called themselves Kate spelled it with a K, but Cate Blanchett changed all. Cate is now as acceptable as (but not as well used as) Kate. Cait might be short for Caitlin.