Duet vs Redmine: What are the differences?

Duet: Project Management for Freelancers and Small Businesses. Duet is an intuitive project management app created specifically for freelancers and small businesses. Duet does not have a monthly fee. Instead, it is available for a one time fee of $49; Redmine: A flexible project management web application written using Ruby on Rails framework. Redmine is a flexible project management web application. Written using the Ruby on Rails framework, it is cross-platform and cross-database.

Duet and Redmine belong to "Project Management" category of the tech stack.

Some of the features offered by Duet are:

• Tasks Management - Flexible task management allows you to create, assign, comment, and attach files to tasks. Drag and drop reordering. Multiple filter options and search. Integrated task timer.
• File Management - File gallery displays a preview of each file, helping you quickly identify the one you’re looking for.
• Visual Invoice Builder - Drag and drop tasks into the invoice builder to quickly create invoices. If the task has a time entry associated, it is automatically added to the invoice.

On the other hand, Redmine provides the following key features:

• Multiple projects support
• Flexible role based access control
• Flexible issue tracking system

Redmine is an open source tool with 3.41K GitHub stars and 1.86K GitHub forks. Here's a link to Redmine's open source repository on GitHub.