Visualizer is a tool designed to make understanding relationships within ConfigMgr easier. You can use it to build diagrams that represent data such as collection relationships and application dependencies.
In addition to making understanding your environment easier, it is also useful for fault finding. For example if a device that should be in a collection isn’t appearing, you can use the tool to find which collections the device is a member of within the dependancy chain. This allows you to quickly identify which collection you need to start your investigation with.
*Usual disclaimer: Visualizer4CM is provided as is, and offers no warranty. Use at your own risk.
Visualizer is open source software, licensed under the MIT license. Source code is available here.