VERY VERY ALL-INCLUSIVE. As it is been said, ZenTao is a tool for application lifecycle management, covering the management from the start to the end. Our team finds the Story, Bug, Task, and Test Case in ZenTao are quite useful as they are all connected with each other. It does help improve the performance and team communication on tasks.
The document sharing feature needs to be optimized, although you can integrate LibreOffice and Collabora Office in ZenTao.