Interesting projects on steem

Just a short post today, but I spent most of my time exploring the Steem ecosystem, so I don't have that much time left in my days to write. But while exploring, I found these interesting projects and resources:

• http://join.utopian.io/ - Contribute to Open Source and earn steem
• https://busy.org/ - I'm not quite sure what it is though... 😄
• https://steemit.chat/ - Nice chat with a lot of active steamians
• https://steemdata.com/ - Parses the blockchain and produces good graphs and datasets

What interesting resources did you discover? Please leave your top posts, projects or websites in the comments - I want to spend even more time reading about Steem.