ansible-cmdb is described as 'Ansible-cmdb takes the output of Ansible's fact gathering and converts it into a static HTML overview page containing system configuration information'. There are three alternatives to ansible-cmdb for a variety of platforms, including Online / Web-based, Linux, Mac, BSD and Self-Hosted solutions. The best alternative is Ansible Semaphore, which is both free and Open Source. Other great apps like ansible-cmdb are Ansible tower (Paid) and Relinx (Freemium).
Relinx is a flexible tool that can be used as an Asset Management, Inventory Management, Configuration Management Database. Define the model on the fly and validate your data against it. Changes to the model don't affect your data. Import your existing data in CSV format.