Trello offers Free Trial, but Intercom does not.
Trello is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Intercom is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Trello Starts at $5/User/Month when Billed Yearly whereas for Intercom Starts at $59/Month.
Some top alternatives to Trello includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Freshbooks, Jira, Basecamp, Wrike, monday.com, Asana, Teamwork, ProjectManager.com, Microsoft Project, Worksuite, Trackboard, Quick Base, Todoist, Resource Guru and Height.
Some top alternatives to Intercom includes ZoomInfo Chat, ClickDesk, LiveAgent, LiveChat, Crisp, LiveEngage, Zendesk Chat, Smartchat, ChatFlow247, Freshchat and Let's Connect.