ther's alot of services in steemit here are a few of them :
http://whaleshares.net/
for whaleshare you need to have bitshare account and use whaleshares or beyound bit for it.
https://www.minnowbooster.net/
you can buy delegation for here or like @booster from @minnowboster you can get upvote 1 steem = to 100 SP delegation so it's worth it as i've already tried it
for you @xpilar i think selling your delegation is more worth cause you don't realy post alot that's my opinion :)
minnowbooster you need to join discord and subscribe with 0.002 steem in their program they give every 12h upvote worth 0.3$ worth it
for the other like randowhale booster i'm not realy into them cause of steem variance in the market that's all :)
i add the https://steemfollower.com/?r=49 for more follower and more upvote not alot but more it's new