Yes, both OnePlan and monday.com offer a Free Trial.
OnePlan is designed for Large Enterprises and Medium Business.
monday.com is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for OnePlan Starts at $65/Month whereas for monday.com Starts at $9/user/month when monthly.
Some top alternatives to OnePlan includes Jira, Smartsheet, monday.com, Social Tables, Joi, SoPlan, Eventsair, Grenadine Event Planner, EventERP and EventMapStudio.
Some top alternatives to monday.com includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Basecamp, Trello, Wrike, ProofHub, Asana, Teamwork, ProjectManager.com, Microsoft Project, Taskworld, Quick Base and Zoho Cliq.