Yes, both LiquidPlanner and ClickUp offer a Free Trial.
LiquidPlanner is designed for Large Enterprises and Medium Business.
ClickUp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of ClickUp begins at $7/User/Month when yearly, while pricing details for LiquidPlanner are unavailable.
Some top alternatives to LiquidPlanner includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Microsoft PPM, Wrike, ProjectManager.com, Microsoft Project, VisionProject, Projectworks, RationalPlan, Quick Base, Resource Management by Smartsheet, Height and Project Insight.
Some top alternatives to ClickUp includes Basecamp, Trello, TeamGantt, Asana, Teamwork, ProjectManager.com, ProWorkflow, nTask, Todoist and Height.