Which cloud-based project management tool runs in a browser window with no software installation required?

The choice of Gantter as the answer reflects a misunderstanding of Gantter’s deployment method. Gantter is a project management tool that is typically known for its integration with Google Drive, but it may require additional steps or software for specific functionalities, which is not the case for all of the other listed options.

On the other hand, tools like Trello, Asana, and Basecamp are widely recognized for their pure cloud-based design, enabling users to access fully functional project management features directly in a web browser without needing to download or install software. These applications provide user-friendly interfaces and a range of collaborative features that help teams manage tasks, projects, and workflows effectively.

Trello is particularly noted for its card and board system that allows users to visualize progress and manage tasks seamlessly. Asana offers comprehensive project tracking and task management features, while Basecamp focuses on team collaboration and communication.

Thus, among the listed options, it is essential to correctly identify the cloud-based project management tools that are entirely functional without requiring any software installation.