What are the most common graphic design software programs used today;which ones will be in demand for awhile?

I was a PR major, but found out that I really don’t like writing as much as I thought I did. I’m planning on going back to my old major in graphic design. It’s been a few years, but what are the most common graphics programs that are used today besides Photoshop and Ilustrator? Also, I want to take digital graphics so I’d like to know what are some that are in demand for that type of medium as well. Thanks!