Yes, both TrueSocialMetrics and Article Insights offer a Free Trial.
TrueSocialMetrics is designed for Large Enterprises, Medium Business and Small Business.
Article Insights is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for TrueSocialMetrics Starts at $1,000 when Billed Monthly whereas for Article Insights Starts at $12/Month.
Some top alternatives to TrueSocialMetrics includes Minter.io, Twitter Analytics, Social Opinion, ListenFirst, Planable, Social Combiner, Vaizle, Socialinsider, SocialStats, Analyser PRO, SocialBee and GetSocial.
Some top alternatives to Article Insights includes Topic, Keyword Chef, TechValidate, SimilarContent Pro, WriterZen, Keyword Insights and ContextMinds.