Yes, both Taiga and OpenProject offer a Free Trial.
Taiga is designed for Individuals, Large Enterprises, Medium Business and Small Business.
OpenProject is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Taiga begins at $5/User/Month when Billed Yearly, while pricing details for OpenProject are unavailable.
Some top alternatives to Taiga includes Smartsheet, Miro, Process Street, Wrike, Notion, Jira, GitScrum, ProjectManager.com, OpenProject, Backlog, Kanbanize, Quick Base, ClickUp, Height, Yodiz and Kanban Zone.
Some top alternatives to OpenProject includes Smartsheet, Miro, Process Street, Wrike, Notion, Freshbooks, Jira, Zoho Projects, Taiga, Asana, Teamwork, ProjectManager.com, Microsoft Project, Leantime, Worksuite, Quick Base, ClickUp, Resource Guru, Redmine X, Height and RedmineUP.