Yes, both SpecFuse and ProductPlan offer a Free Trial.
SpecFuse is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
ProductPlan is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SpecFuse Starts at $5/Month when Billed Yearly whereas for ProductPlan Starts at $39/User/Month when Billed Yearly.
Some top alternatives to SpecFuse includes Smartsheet, Miro, Process Street, Wrike, Notion, ProductPlan, Next Please, Microsoft PPM, ManagePro, Teamwork, ProjectManager.com, Microsoft Project, VisionProject, Changepoint PPM, Plan, Quick Base and ClickUp.
Some top alternatives to ProductPlan includes Aha!, Roadmunk, ProdPad, Jira, productboard, Productroad, ProductFlare, Next Please, IdeaPlan and LaunchNotes.