I have two favorite steem it tools I look at when I can--the first has been around for awhile--it's the Steemitpond!!
This is a fun tool to see whose posting right now--I've heard it can help you know when to post by how many whales are on, but really I have found the best use to to find new and random people to read. You just click on a fish that you see and you go to their latest post. I've found great posts that I would not have searched for otherwise.
The other is at https://www.steemnow.com/
Just type in your handle and you can see what your votes are worth at what strength, you can see whose been upvoting you all in one place. It's a great tool, and I think it's helped me understand how the steemit world works just a wee bit better.