Open-source alternatives to ExHyperV

Open vSwitch is a software-defined network switch and high-performance data plane engine. It functions as a virtual layer 2 switch and network orchestrator, implementing the OpenFlow protocol to decouple the control plane from the data plane for programmable network forwarding. The project distinguishes itself through a userspace-kernel datapath split and the use of poll-mode drivers for kernel-bypass acceleration. It provides a network tunneling gateway to extend virtual networks across physical hosts and utilizes a transactional, schema-based configuration database with state replication fo

Easy-GPU-PV is an administrative toolset for verifying hardware compatibility and automating the deployment of partitioned graphics acceleration across virtualized Windows environments. It functions as a resource orchestrator and manager for provisioning virtual machines with partitioned graphics processing units. The project focuses on Windows GPU partitioning, enabling a single physical graphics card to share hardware acceleration across multiple virtualized systems. It achieves this by automating the configuration of host hardware and software to allow virtualized environments to access gr

LookingGlass is a low-latency display mirror and frame relay system designed to transfer video frames from a KVM guest operating system to a host window in real time. It functions as a specialized bridge that allows for the viewing of virtual machine outputs using hardware passthrough to minimize lag. The system utilizes VGA PCI passthrough to relay frames from a guest virtual machine to a local display window. This approach focuses on high-performance display mirroring, providing a way to view guest displays on a host machine without using traditional network protocols. The implementation r

Incus is a unified orchestration platform for managing system containers, OCI application containers, and virtual machines through a single control plane. It brings together cluster infrastructure management, secure multi-tenancy, software-defined networking, and pluggable storage backend orchestration into one cohesive system exposed via a full REST API and command-line interface. What distinguishes Incus is its ability to run multiple instance types side by side—full Linux system containers, OCI application containers, and QEMU virtual machines—all managed with consistent tooling. Networkin

Harvester is a hyperconverged infrastructure software platform that combines compute, storage, and networking into a single system for managing virtualized environments on bare metal servers. It functions as a virtualization management platform and KVM hypervisor manager, providing a centralized interface to orchestrate the full lifecycle of virtual machines. The project distinguishes itself by integrating Longhorn distributed block storage to provide redundant, software-defined storage and a bare metal provisioning tool for automated deployment. This allows for the orchestration of infrastru

This project is a distributed computing platform designed to orchestrate containerized workloads across heterogeneous hardware clusters. It functions as a centralized control plane that manages resource allocation, scheduling, and execution environments, enabling organizations to share high-performance computing infrastructure securely among multiple users and projects. The platform distinguishes itself through advanced hardware virtualization and multi-tenant management capabilities. It supports the partitioning of physical graphics processing units into fractional slices, allowing multiple

CloudStack is an infrastructure-as-a-service orchestration engine designed to automate the deployment and lifecycle of computing, storage, and networking resources within a software-defined data center. It serves as a management layer for provisioning private clouds and managing the delivery of virtual machines and persistent storage across virtualized physical infrastructure. The platform features a multi-hypervisor orchestrator that utilizes a hypervisor-agnostic abstraction layer to control diverse virtualization technologies through a unified set of standardized API calls. It further prov

uperf is an Android performance tuning tool and Linux kernel parameter manager designed to optimize device responsiveness and battery life. It functions as a CPU affinity and scheduling manager, a hardware power profile controller, and a real-time system monitor that adjusts kernel parameters and CPU frequencies. The project distinguishes itself through real-time system monitoring of touchscreen input and frame rendering to trigger immediate performance boosts. It utilizes hardware performance profiling to apply pre-tuned configuration files tailored to specific hardware platforms, balancing

OrbStack is a native macOS application that replaces Docker Desktop, providing an all-in-one environment for running Docker containers, full Linux virtual machines, and local Kubernetes clusters. It runs Linux VMs directly on the macOS hypervisor framework for near-native performance, uses VirtioFS for fast bidirectional file sharing between macOS and Linux, and leverages Rosetta for near-native x86 emulation on Apple Silicon. The system assigns predictable local domain names to containers and VMs with automatic HTTPS certificate generation, forwards ports via event-driven updates, and stores

Quickemu is a command-line utility designed to automate the deployment and management of virtual machine instances. It functions as an automated provisioner that handles the acquisition of operating system images and the generation of optimized configuration files, allowing users to launch virtualized environments with minimal manual setup. The tool leverages hardware-accelerated emulation to execute virtual machines, mapping host-native resources directly to the guest environment to maintain performance. It utilizes shell-scripted orchestration to manage the lifecycle of these instances, sto

HAMi is a hardware orchestration and virtualization system designed to manage accelerators within Kubernetes. It functions as a device plugin that partitions physical hardware into isolated virtual slices, enabling multiple containers to share a single device through enforced memory limits and compute quotas. The project provides a virtualization manager and a heterogeneous compute scheduler that distributes tasks across diverse accelerator types. It uses packing and topology policies to optimize workload placement and allows for specific hardware targeting using unique device identifiers. T

vgpu_unlock is a set of software tools and driver modifications designed to unlock enterprise-grade virtualization features on consumer graphics hardware. It functions as a vGPU unlock tool and hardware device ID spoofer that allows a single graphics card to be shared across multiple virtual machines. The project achieves this by employing driver-level hooking, dynamic memory patching, and kernel-level device spoofing. These techniques intercept hardware identification queries and modify the operational state of the GPU driver at runtime to bypass manufacturer-imposed software restrictions.

Lima is a virtualization engine designed to provision and manage lightweight Linux, macOS, and FreeBSD virtual machines. It functions as a comprehensive virtual machine manager that leverages native hypervisors and system emulation to provide isolated environments for container development, cross-architecture testing, and secure sandboxing. The project distinguishes itself through its template-driven provisioning system, which allows users to define and automate environment configurations via local files or remote URL schemes. It integrates deeply with host systems by providing automated file

Colima is a command-line utility that provides lightweight container runtimes and local Kubernetes orchestration by managing isolated virtual machine environments. It functions as a virtualization manager that abstracts the underlying container engine, allowing users to run containerized applications and system workloads on non-native operating systems without the overhead of heavy desktop software. The project distinguishes itself through its support for hardware-accelerated workloads, enabling direct GPU passthrough to virtual machines for high-performance machine learning tasks. It offers

Cua is an agent benchmarking and desktop automation platform designed to evaluate autonomous agents and execute repetitive tasks within isolated, virtualized environments. It provides a framework for provisioning consistent workspaces and measuring agent performance against standardized desktop operations. The platform distinguishes itself by integrating virtual machine orchestration with headless interaction capabilities. By leveraging hypervisor-based virtualization, it runs operating systems at near-native speeds, while its automation layer injects commands directly into application proces

v86 is a browser-based virtual machine and x86 hardware simulator that allows 16-bit and 32-bit operating systems to run directly within a web page. It functions as an x86 emulator for WebAssembly, simulating CPUs, memory, and storage devices to execute legacy software without original native hardware. The project utilizes a WebAssembly just-in-time compiler to translate x86 machine code into WebAssembly modules for high-performance execution in the browser. The system covers hardware emulation and lifecycle management, including the ability to boot from disk images, configure virtual hardwa

Vagrant is a virtual machine environment manager and infrastructure as code tool used to create and configure consistent development environments. It acts as a virtual machine provisioner and hypervisor abstraction layer, allowing users to define machine specifications and automate software installation on guest systems via declarative configuration files. The project enables cross-hypervisor orchestration by decoupling the command interface from specific virtualization backends. It ensures environment consistency through the distribution of pre-configured machine images and the orchestration

Boto3 is the AWS SDK for Python, providing a programmatic interface for managing and automating AWS cloud infrastructure and services. It serves as a cloud management API client and resource manager for provisioning, configuring, and scaling virtual servers, databases, and storage. The library enables the implementation of infrastructure-as-code through declarative templates and scripts, allowing for the deployment of identical resource stacks across multiple accounts and geographic regions. It also provides a framework for coordinating distributed workflows, serverless functions, and contain

pvetools is a configuration toolkit and suite of scripts designed to automate the setup and optimization of Proxmox VE virtualization environments on Debian. It provides automated toolsets for configuring hypervisors, optimizing hardware, and deploying network file services. The project features a container runtime deployer for installing engines and web management interfaces within isolated environments, and a storage manager for resizing root partitions, managing ZFS RAM usage, and relocating container data across disks. It includes optimization scripts for nested virtualization and PCI pas

Dry is a container lifecycle manager and cluster orchestrator designed to control groups of containers, services, and stacks across multiple nodes. It functions as a resource manager for inspecting and cleaning up images, persistent volumes, and network configurations, while providing a terminal-based dashboard for monitoring system events and resource usage. The project enables the coordination of distributed workloads through service-stack grouping and cluster orchestration. It provides a centralized control plane to synchronize the deployment and scaling of complex application architecture

monoio is a high-performance asynchronous runtime and executor for Rust. It implements a thread-per-core concurrency model that pins tasks to specific CPU cores to eliminate synchronization overhead and data migration. The runtime leverages the io_uring interface to perform non-blocking system calls and reduce kernel-user mode memory copying. It utilizes a high-performance I/O driver and zero-copy TCP stream wrapping to manage data transfer via shared-memory buffers. The project provides capabilities for CPU core affinity management, low-latency system programming, and high-performance netwo

Tart is an Apple Silicon virtualization manager used to build and run macOS and Linux virtual machines using native hardware virtualization frameworks. It functions as a virtual machine cluster orchestrator and an ephemeral runner for executing continuous integration pipeline steps within isolated, short-lived environments. The system utilizes an OCI-compatible virtual machine registry to push and pull images via standardized container registries. It features a controller-worker architecture that schedules virtual machine lifecycles across remote worker nodes, incorporating a secure SSH jump

The Google Cloud Go Client Library is a set of Go packages and a software development kit used to interact with Google Cloud platform services and APIs. It provides the primary means for Go applications to integrate with cloud service endpoints through simplified language patterns and automated API request handling. The project features specialized libraries for managing identity and access via service accounts, API keys, and environment-based credential resolution. It includes dedicated SDKs for programmatic resource orchestration and the deployment and management of serverless functions, co

Katran is an eBPF-based Layer 4 load balancer designed for high-performance network packet forwarding directly within the Linux kernel. It utilizes an XDP network packet processor to bypass the standard kernel network stack, minimizing latency and maximizing throughput for incoming traffic. The system implements weighted consistent hashing to distribute network loads and maintain session persistence across backend servers. It further optimizes the return path through a direct server return gateway, which allows backends to respond directly to clients and removes the load balancer from the out

This project is a comprehensive reference guide and cheat sheet for the Docker CLI. It provides a structured collection of commands and documentation to help users manage container lifecycles, build images, and handle registries. The documentation specifically covers the orchestration of multi-container applications using Docker Compose and the management of scalable services across multiple nodes via Docker Swarm. It also includes detailed guides for configuring virtual networks, bridges, and ports to control container communication. The reference surface extends to container image administ

Multipass is a virtual machine lifecycle controller and manager designed to create and orchestrate lightweight Ubuntu instances on a local workstation. It functions as a cross-platform hypervisor wrapper that provides a local cloud development environment for simulating cloud deployments. The system utilizes a hypervisor-abstraction layer and driver-based backend resolution to manage virtual machines across different host operating systems using native virtualization backends. It enables the simulation of cloud instance behavior through the injection of cloud-init metadata and initialization

Microsandbox is a microVM sandbox runtime and hardware-isolated code executor designed for running untrusted code. It functions as an embedded virtual machine manager that allows applications to spawn and control lightweight virtual machines directly within code without the need for a background daemon. The system provides a secure execution environment for AI agents by exposing server controls that allow them to execute tools and manage files. It utilizes standard container image formats and volume workflows to initialize guest virtual machines and implements a secret management mechanism th