Welcome back.
Pretty much whole Steem community minus some Koreans moved to Hive.

There are many front end interfaces which allow you to blog on the Hive blockchain.
Peakd.com, hive.blog and Eccency are the three biggest generalist ones.

Then there are community based front-ends like Leofinance.io, stemgeeks.net and many more. They only display content with their relevant tag.

All the content goes on the Hive blockchain and all can earn HIVE and HBD as rewards.
Many communities also have their own 2nd layer token (eg LEO) which creates an additional source of earning for upvotes.

There are also games like Splinterlands.com and short form content platforms like D.Buzz.

Its all accessible with a single password and click using Hive Keychain.