Yes, both Celoxis and Smartsheet offer a Free Trial.
Celoxis is designed for Large Enterprises, Medium Business and Small Business.
Smartsheet is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Celoxis Starts at $25/month when yearly whereas for Smartsheet Starts at $9/month when yearly.
Some top alternatives to Celoxis includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Basecamp, Microsoft PPM, Wrike, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Quick Base, Resource Management by Smartsheet and Height.
Some top alternatives to Smartsheet includes Quickbase , ClickUp, Zoho Projects, Jira, Microsoft PPM, Trello, TeamGantt, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project and Airtable.