Yes, both Miro and OpenProject offer a Free Trial.
Miro is designed for Large Enterprises, Medium Business and Small Business.
OpenProject is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Miro begins at $8/User/Month when Billed Yearly, while pricing details for OpenProject are unavailable.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.
Some top alternatives to OpenProject includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Jira, Wrike, Taiga, Asana, Teamwork, ProjectManager.com, Microsoft Project, Leantime, Worksuite, Quick Base, Resource Guru, Redmine X, Height and RedmineUP.