Yes, both Pivotal Tracker and Hubstaff offer a Free Trial.
Pivotal Tracker is designed for Large Enterprises, Medium Business and Small Business.
Hubstaff is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Pivotal Tracker Starts at $6.50/User/Month whereas for Hubstaff Starts at $5.83/User/Month when Billed Yearly.
Some top alternatives to Pivotal Tracker includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Wrike, TeamGantt, Teamwork, ProjectManager.com, Microsoft Project, Backlog, Trackboard, Quick Base, Projectsly by 500apps, Height and Project Insight.
Some top alternatives to Hubstaff includes Time Doctor, DeskTime, TimeTracker App, Harvest, Timesheets.com, TrackingTime, Clockify, TimeTrack, Timebase and AtTrack.