I use Jarvee for automation, but I have this tool that really helps cut down my scraping with my desired account, called Helper Tools for Instagram:
What I like about this tool is I can scrape a list of people that liked the last X number of posts and really get a good batch of engaged people to follow. On Jarvee, you will hit errors if you try to go too far back.
I would like to know if there is a tool out there that scrapes the accounts that liked, retweeted and commented on a twitter account. Really even just the likes would be great.