Yes, both ClickUp and KiSSFLOW offer a Free Trial.
ClickUp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
KiSSFLOW is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ClickUp Starts at $7/User/Month when yearly whereas for KiSSFLOW Starts at $9.90/User/Month when Billed Yearly.
Some top alternatives to ClickUp includes Basecamp, Trello, TeamGantt, Asana, Teamwork, ProjectManager.com, ProWorkflow, nTask, Todoist and Height.
Some top alternatives to KiSSFLOW includes GoodFlow, VisionFlow, Zoho Flow, ProcessMaker, Pipefy, K2, Flowingly, BPMapp by 500apps, Kissflow Procurement Cloud and Cflow.