Well I'm not aware of all of these applications of steemit but some of the steemit application I do know.
I think steem.supply by @dragosroua is a very good application, helps you to keep track of all of your payouts.
Another great application is steembottracker by @yabapmatt , here some of the people think that it's not right to use bots but I think it's very important to use them bots for minnows. All these applications are great and thanks to those who developed these.