Yes, both Trello and Mopinion offer a Free Trial.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Mopinion is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Mopinion Starts at $229/Month.
Some top alternatives to Trello includes Smartsheet, Miro, Process Street, Wrike, Notion, Freshbooks, Jira, Basecamp, Zoho Projects, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, ClickUp, Resource Guru and Height.
Some top alternatives to Mopinion includes SurveyMonkey, QuestionPro, SurveySparrow, easyfeedback, ngSurvey, Cognito Forms, Liveform, UserFace, Freddy Feedback, Feedbackery and Usabilla.