A good collaborative tool for a group project could be Google Docs. Google Docs allows multiple people to work on a document simultaneously, making it easy for team members to contribute their ideas and make edits in real time. It also has features such as comments and suggested edits, which allow for easy communication and collaboration within the document. Google Docs also automatically saves changes, so there is no risk of losing work. Additionally, Google Docs is accessible from any device with an internet connection, making it convenient for team members to work on the project from anywhere.