Trello offers Free Trial, but ProductFlare does not.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
ProductFlare is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for ProductFlare Starts at $1/Month.
Some top alternatives to Trello includes Smartsheet, Miro, Process Street, Wrike, Notion, Freshbooks, Jira, Basecamp, Zoho Projects, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, ClickUp, Resource Guru and Height.
Some top alternatives to ProductFlare includes Aha!, Roadmunk, ProdPad, ProductPlan, Jira, productboard, Productroad, ProdCamp, Next Please and IdeaPlan.