Yes, both Celoxis and Basecamp offer a Free Trial.
Celoxis is designed for Large Enterprises, Medium Business and Small Business.
Basecamp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Celoxis Starts at $25/month when yearly whereas for Basecamp Starts at $15/user/month when monthly.
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 Basecamp includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Trello, Wrike, TeamGantt, monday.com, Asana, Teamwork, ProjectManager.com, Quick Base, Project.co and Notion.