Ansible is described as 'Radically simple IT automation engine that automates cloud provisioning, configuration management, application deployment, intra-service orchestration, and many other IT needs' and is a popular server management tool in the system & hardware category. There are more than 50 alternatives to Ansible for a variety of platforms, including Linux, Mac, Windows, Web-based and BSD apps. The best Ansible alternative is Puppet, which is both free and Open Source. Other great apps like Ansible are Salt, Chef, pyinfra and Nix Package Manager.
It's the most secure, efficient, auditable, and well-documented.