Brushup is a review tool through which you can create handwritten notes and comment online on documents, images, videos, etc.
As Box and Brushup are linked, you can use Box for content management and sharing, and Brushup for feedback, which facilitates a smooth overall production management.
For instance, one may harness the two tools in accordance with the following operational flow:
・Using Box as the storage location for the final version of content created on Brushup
・Using Brushup to retrieve content stored in Box, mark it in red, and add comments to indicate its location
In addition to its feedback feature, Brushup also possesses other functionalities such as Gantt charts, comparing 2 images to detect their differences, etc. As such, it is a tool that combines the management functions essential for content production.
You can learn more about Brushup here（https://www.brushup.net/）.