Check out the mobile app eSteem. Also there is busy.org, d.tube, dlive.io, zappl.com, steepshot.io, dsound, and many more sites/apps you can log into with your steemit account. Some may ask for a different key besides your main steemit master password which controls your wallet. You can find the other keys in your wallet tab, then select the permissions tab and click show key. Some keys require your main password to show the private key. This allows you to use other Steem sites without giving up your main password.
thankyou! that is very helpful! I had a few questions and you answered some of them before I even had to ask that was awesome.
so do I need to make copies of all of those keys o rjust my primary password?
The keys are tied to your primary pw. Just back up and never lose that pw and you're good.