Streemian
From Steem Center
Streemian is a curation trail website that can be used to auto-vote on content when another account votes on certain content.
Firstly head over to Streemian (http://streemian.com) and setup an account - you will need to authenticate your account with 0.001 STEEM
There you can choose a trail to follow. Click on JOIN THE TRAIL and then you will be presented with the following choices.
Select whether to allow: - upvote - downvote - upvote on comment - disable
Then set your % for each vote and click UPDATE.
That is it. Now whenever your curator votes on a post (or comment), your account will automatically vote on the same content.