AAnsibleRed Hat (Ansible community) · Infrastructure & provisioningAgentless configuration management and orchestration tool that runs YAML playbooks over SSH, with collections for clouds, network gear and applicationsGPL-3.0-or-laterOpen sourceFreeLocalSelf-hostedNov 2, 2026
KKubernetesCloud Native Computing Foundation · Containers & virtualizationIn-depth entryOpen-source system for scheduling, scaling and operating containerized workloads across a cluster of machinesApache-2.0Open sourceFreeSelf-hostedNov 2, 2026
OOpenTofuLinux Foundation (OpenTofu project) · Infrastructure & provisioningCommunity fork of Terraform under the Linux Foundation, keeping the HCL language, provider ecosystem and state model under the MPL-2.0 licenseMPL-2.0Open sourceFreeLocalNov 2, 2026