Batfish
Network Automation
Open-source network configuration analysis tool validating network changes before deployment by modeling network behavior.
Network Automation
Open-source network configuration analysis tool validating network changes before deployment by modeling network behavior.
Configuration Management
Open-source configuration management system using declarative specifications for managing complex computing environments.
Incident Management
Open-source ITSM and CMDB platform providing configuration management, change tracking, and incident management with customizable data model.
Configuration Management
Next generation open-source configuration management tool written in Go with parallel execution and event-driven reactivity.
Configuration Management
Open-source Perl-based remote execution and configuration management framework with agentless operation and SSH-based connectivity.

Configuration Management
Open-source lifecycle management tool for physical and virtual servers covering provisioning, configuration, and orchestration.

Network Automation
Multi-vendor network configuration management and automation tool with backup, mass configuration, and compliance features.
Price$26.50+ / month

Network Monitoring
OpenNMS is an open-source enterprise-grade network monitoring platform designed for large-scale, distributed network environments with fault and performance management.
Price$500+ / month

Network Monitoring
Progress WhatsUp Gold provides network monitoring, configuration management, and traffic analysis for IT teams managing on-premises and hybrid infrastructure.

Configuration Management
CFEngine is one of the original configuration management tools, providing autonomous infrastructure management for large-scale server environments with minimal network dependency.