Yes, both Structural and Social Cycle offer a Free Trial.
Structural is designed for Large Enterprises, Medium Business and Small Business.
Social Cycle is designed for Medium Business and Small Business.
Pricing for Structural Starts at $5/User/Month whereas for Social Cycle Starts at $29/User/Month.
Some top alternatives to Structural includes OurPeople, PeopleForce, Qualified, People.ai, Aptly.Pro, Workvivo, JobTarget, Social Cycle, Salesforce Connect, JOIN, SwoopTalent and SkillSpring.
Some top alternatives to Social Cycle includes Salesflare, SalesIntelligent, B2B Salesfuel, Outbound, Qualified, SalesQL, Workvivo, Blog To Social, CoSell, WeSales, Social Lead and IFTTT.