Yes, both Nave and Kanbanize offer a Free Trial.
Nave is designed for Freelancers, Medium Business and Small Business.
Kanbanize is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Nave Starts at $31/User/Month when Billed Yearly whereas for Kanbanize Starts at $179/Month when Billed Yearly.
Some top alternatives to Nave includes Kanboard, Kanbanize, Screenful, Geckoboard, SheetChart, BrightGauge, InetSoft Style Scope, Kanban Tool, KanbanFlow and Kanban One.
Some top alternatives to Kanbanize includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Trello, Wrike, TeamGantt, GitScrum, Teamwork, Kaiten, SwiftKanban, Trackboard, Quick Base, Kanban Tool and Kanban Zone.