Yes, both Flocknet and FollowerSearch offer a Free Trial.
Flocknet is designed for Individuals, Large Enterprises, Medium Business and Small Business.
FollowerSearch is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Flocknet Starts at $5/Month whereas for FollowerSearch Starts at $14.50/Month when Billed Yearly.
Some top alternatives to Flocknet includes FollowerSearch, Social Opinion, Twitonomy, yatta! analytics, Tweetastic, Tweet Niche, Qualified, Workvivo, Create Target Audience, IFTTT and MentionMe.
Some top alternatives to FollowerSearch includes BuzzSumo, Twitter Analytics, NetBase, Followerwonk, Twitonomy, Tweet Archivist, SocialTracker, Planable, SocialStats, SocialBee, Tweetastic and Tweepsmap.