I love Steemworld to manage my activity. I use Partiko several times a day to earn points, I also upvote a few Actifit posts through their platform, since you can earn 3 AFIT for upvoting 3 posts. They also let you earn AFIT for editing your post on their UI.
I also like Palnet and Steemleo. I find myself using a variety of UI based on what I'm doing in the moment.