Yes, both Shared SEO and PartnerShare offer a Free Trial.
Shared SEO is designed for Freelancers, Medium Business and Small Business.
PartnerShare is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Shared SEO Starts at $6/Month whereas for PartnerShare Starts at $41/Month when Billed Yearly.
Some top alternatives to Shared SEO includes SEOJet, SE Ranking, Mangools, SoloSEO, SEO Buddy, Zapier, MuleSoft Anypoint Connectors, SuiteJar, SEOcrawl and SheerSEO.
Some top alternatives to PartnerShare includes TrueSaaS, Ambassador Referral Marketing, Partner Insight, Partnero, Qualified, Workvivo, Smthg, AffSync, Partnered, Impact and IFTTT.