Ansible Inventory Grapher
Ansible Inventory Grapher generates inventory graphs, so we can quickly see what groups are used for a particular host in Ansible inventory. The tool creates a GraphViz DOT file format in quite an opinionated fashion (currently there is no way to choose fonts or shapes, the program decides for you!)
The tool can be found in ansible-inventory-grapher GitHub repo. As mentioned above, we need both Ansible and Graphviz installed to be able to use the tool.