ClickUp offers Free Trial, but Nexttask does not.
Nexttask is designed for and undefined.
ClickUp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Nexttask Starts at $5/User/Month whereas for ClickUp Starts at $7/User/Month when yearly.
Some top alternatives to Nexttask includes Todoist, Wrike, Smartsheet, Teamwork, ProWorkflow, SwiftKanban, Kanbanize, Flowist, ClickUp, Kanban Tool, Flow, KanbanFlow and Taskiem.
Some top alternatives to ClickUp includes Basecamp, Trello, TeamGantt, Asana, Teamwork, ProjectManager.com, ProWorkflow, nTask, Todoist and Height.