Total Network Inventory - Total Network Inventory is a piece of software designed to help with managing software inventory and auditing PC systems.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
Chef - Automation for all of your technology. Overcome the complexity and rapidly ship your infrastructure and apps anywhere with automation.
Spiceworks Help Desk - Help desk software features that work for IT
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.