Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
The Dude - MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Pandora FMS - Pandora FMS: Opensource monitoring software
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
cStatus - Monitor and scan a network.