Yes, both Gainsight PX and productboard offer a Free Trial.
Gainsight PX is designed for Large Enterprises, Medium Business and Small Business.
productboard is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Gainsight PX Starts at $500/User/Month whereas for productboard Starts at $20/User/Month when Billed Yearly.
Some top alternatives to Gainsight PX includes ProdPad, Productroad, ProdCamp, ProductFlare, Productiv, Zoomph, Amplitude, Userpilot, Pendo and Amplitude Analytics.
Some top alternatives to productboard includes Aha!, Roadmunk, ProdPad, ProductPlan, Jira, Productroad, ProductFlare, Next Please, airfocus and IdeaPlan.