Yes, both Montera and Project.co offer a Free Trial.
Montera is designed for Large Enterprises, Medium Business and Small Business.
Project.co is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Montera Starts at $35/Month whereas for Project.co Starts at $10/User/Month.
Some top alternatives to Montera includes Teamwork, CollaborateCloud, ClickUp, Project.co, Collabee, DoSheets, mi.team, Acollab, Melp, Collabtools and Witeboard.
Some top alternatives to Project.co includes TeamGantt, Zoho Projects, Teamwork, ActiveCollab, ProjectManager.com, Microsoft Project, Projectworks, TaskBranch, CollaborateCloud, ClickUp and Project Insight.