A rack of ordinary servers becomes your own cloud, with tenants ordering real infrastructure from a catalogue instead of filing tickets. Cozystack is an open-source, Kubernetes-based cloud platform that turns bare metal into a self-service system for spawning Kubernetes clusters, databases, virtual machines, load balancers, object storage, and HTTP caching services through a standard REST API. Hosting providers use it to sell managed services on hardware they already own, platform teams use it to give developers isolated environments inside quotas, and organizations leaving VMware run virtual machines and containers side by side with live migration and replicated storage. Tenants stay separated, GPU capacity can be shared between groups, and every service instance ships with preconfigured monitoring dashboards and alerts, gathered per tenant or into one hub. Because services are requested as Kubernetes resources, a billing system integrates by submitting a manifest, and platform packages are plain YAML delivered by FluxCD, so extending the catalogue means editing files your team already understands. Installation bootstraps immutable nodes over PXE or ISO, and the built-in web dashboard deploys applications and shows what the platform is doing without hiding the API underneath. The whole control plane runs on your hardware, auditable end to end. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Your racks of hypervisor hosts become one private cloud with Apache CloudStack, the open-source IaaS platform that deploys and manages large networks of virtual machines behind a single web interface and API. One cloud can mix hypervisors side by side, running KVM, XenServer or XCP-ng, and VMware vSphere clusters under the same control plane, each organized into regions, zones, pods, and clusters that mirror your physical datacenters and racks. Administrators provision instances from templates and ISO images, take volume and VM snapshots on schedules, and migrate running instances between hosts in a cluster without downtime. Built-in networking spans isolated and shared networks, VPCs with tiered virtual routers, load balancers with SSL offloading, VPNs, and firewall rules, all exposed both to admins and to end users through separate, customizable interfaces. Multi-tenancy is native: domains, accounts, usage metering, and resource quotas let providers bill departments or customers for what they consume. The 4.22 LTS release strengthens backup and disaster recovery, adds a CSI driver for CloudStack Kubernetes Service, and streamlines VMware-to-KVM migrations for teams consolidating onto open virtualization. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

One front-end server can run your entire cloud: OpenNebula orchestrates KVM virtual machines and LXC containers across clusters of hosts, presenting everything through the FireEdge Sunstone web interface and a full API. Operators define VM templates once and instantiate them anywhere, attaching disks and networks, taking snapshots, scheduling actions, and opening remote consoles through Guacamole without leaving the browser. The OneDRS distributed resource scheduler reads historical and real-time metrics to predict demand spikes and migrate workloads before contention bites, with customizable policies and automation levels. GPU passthrough and PCI device hotplugging serve AI and accelerator workloads, while OVA import through the oneswap command ingests virtual machines exported from VMware vCenter for re-virtualization projects. Edge Clusters deploy on demand on premises or at remote providers, extending the same management model to hybrid and distributed sites without a separate stack. The 7.4 Helix release redesigns Sunstone with a slide-in side drawer and richer resource visualizations, and brings OneKS managed Kubernetes plus LVM storage to the Community Edition. Ceph and LVM datastores, incremental backups, cluster-level and generic quotas for resources like vGPUs, and OneFlow service orchestration for multi-VM applications round out daily operations. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Managing Kubernetes shouldn't require every developer to become a Kubernetes expert — KubeSphere wraps cluster operations, CI/CD, service mesh, and observability into guided web workflows that operations teams configure once and developers consume without kubectl. The LuBan extensible architecture treats each capability as an independently installable extension plugging into a lightweight microkernel: enable DevOps without service mesh, add monitoring without the app store, compose exactly what your organization needs. Multi-cluster management provides a centralized control plane for provisioning and operating clusters across cloud providers, data centers, and edge locations with unified identity and resource quotas. The DevOps extension integrates Jenkins for graphical pipeline creation with S2I and B2I workflows, while Argo CD powers GitOps continuous deployment with real-time sync status. Istio-based service mesh provides traffic management, canary deployments, circuit breaking, and distributed tracing through the console without CLI knowledge. Prometheus monitoring with custom dashboards, Fluentd log collection with multi-tenant search, and alerting via Slack and email complete the observability stack. Multi-tenant workspace hierarchy enforces resource quotas and fine-grained RBAC roles across teams. A built-in Helm-based app store handles lifecycle management across clusters. KubeKey deploys production-grade clusters on bare metal or VMs with air-gapped support. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

QVMConsole turns a KVM host into a small private cloud where tenants create, clone, snapshot, and console into their own virtual machines from one web panel without ever touching the hypervisor. Create machines from templates, linked clones, or ISO images across x86_64 and ARM hosts with BIOS or UEFI firmware, multiple disks, and multiple network cards, then manage power, reinstalls, imports, and exports from the same console. Each tenant receives an isolated VPC built on Open vSwitch with its own logical switch, VLAN, DHCP, NAT, and access control, plus cloud-style security groups, port forwarding with health checks, bandwidth limits, and monthly traffic quotas. Storage pools span host disks and LVM volumes, VM disks migrate between pools online, and snapshots carry their own quotas with restore and UEFI safeguards. Open any machine in the browser through the noVNC console, complete with shortcut keys and one-click password paste, and follow long operations in an asynchronous task center that streams progress live. Administrators enforce two-factor authentication, confirm sensitive actions a second time, and cap every tenant by CPU, memory, disk, VM count, public IPs, and runtime hours through fine-grained quotas or a lightweight cloud mode. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Used by over 30,000 teams and 650+ enterprise customers managing more than 5.2 million containers, Rancher has earned recognition as a Leader in the Gartner Magic Quadrant for Container Management and the Forrester Wave for Multicloud Container Platforms. The platform provides a single pane of glass for provisioning, upgrading, and securing Kubernetes clusters across Amazon EKS, Google GKE, Microsoft AKS, RKE2, K3s, and any CNCF-conformant distribution. Multi-Cluster Management enables centralized authentication via Active Directory, LDAP, SAML, GitHub, and OpenID Connect with granular role-based access control at the cluster, project, and namespace levels. Fleet, the built-in GitOps engine, delivers continuous deployment across hundreds of clusters simultaneously using Helm charts, Kustomize, or raw YAML manifests from any Git repository. The integrated app catalog provides one-click deployment of Prometheus monitoring, Grafana dashboards, Longhorn persistent storage, Istio service mesh, and hundreds of community Helm charts. Rancher supports air-gapped installations for disconnected environments, CIS benchmark scanning for security compliance, and automated backup and restoration of cluster configurations. The dashboard offers real-time workload monitoring, log aggregation, pod shell access, and namespace-scoped resource quotas. Cluster templates enforce organizational standards through Helm-based provisioning policies that ensure consistent configurations across environments. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.