Praxis is described as 'Open-source, self-hosted Linux fleet operations for patching, privileged access, compliance, audit evidence, and automation via SSH or a lightweight agent' and is an app in the development category. There are four alternatives to Praxis for Linux, Web-based, Self-Hosted, Ubuntu and SaaS. The best Praxis alternative is Landscape. It's not free, so if you're looking for a free alternative, you could try Landscape or Uyuni.
Landscape automates security patching, auditing, access management and compliance tasks across your Ubuntu estate. Use it in well-connected or airgapped environments: at sea, in space and everywhere in between. Landscape is available with an Ubuntu Pro subscription.
United Kingdom
Uyuni is a solution for organizations that require absolute control over maintenance and package deployment on their servers. It lets you manage large sets of Linux systems and keep them upto date, with automated software management, asset management, and system provisioning.
System management product that delivers system provisioning, configuration management, life-cycle management, and overall scalability and security.
United States