Two of my favorite resources for knitting cables, etc. is knittingfool.com which allows you to find a stitch pattern both by the length of the repeat and also its width. It has many categories to search for finding what is available. It has charts on some patterns but written instructions on all.
Another one I recently discovered is cableknittingstitches.com which offers some great patterns for free but so far most do not have charts. The pictures are excellent. It is organized more as a blog by month of pattern submission but if you dig a bit, there are some real gems.
I am making a cable afghan currently and am not as fond of some of the cable patterns so have been doing some experimenting.
Of course, everyone knows about ravelry.com but if you are more focused on a certain aspect of knitting, it is very handy indeed. Sometimes I don't want to invest in a pattern, just try it out and see if it is going to work.