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AI · alternatives · 2026

24 alternatives to Volant– spin up real microVMs in 10 seconds(Docker images or initramfs)

I’ve been building Volant, a modular microVM orchestration engine that makes running microVMs feel as simple as Docker. It supports cloud-init, GPU/VFIO passthrough (yes, you can run AI/ML workloads in isolated microVMs), booting Docker images via a plugin system, and Kubernetes-style deployments with replication, all from a single CLI(soon to be web UI, see next) Coming soon: a built-in PaaS mode with snapshot-based cold start elimination, sort of like Dokploy, but designed for serverless workloads that boot from memory snapshots instead of containers. Volant is intentionally a…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1
  2. 2

    Build and run tiny vms from Dockerfiles. Small and sleek. - ottomatica/slim

    2019 · github.com · its alternatives →

  3. 3

    Spin up secure sandboxes in ~100 ms

    Nov 2025 · hopx.ai · its alternatives →

  4. 4

    Build and run tiny vms from Dockerfiles. Small and sleek. - GitHub - ottomatica/slim at 2.x

    2022 · github.com · its alternatives →

  5. 5

    I wanted to see how fast an isolated code sandbox could start if I never had to boot a fresh VM. So instead of launching a new microVM per execution, I boot Firecracker once with Python and numpy already loaded, then snapshot the full VM state. Every execution after that creates a new KVM VM backed by a `MAP_PRIVATE` mapping of the snapshot memory, so Linux gives me copy-on-write pages automatically. That means each sandbox starts from an already-running Python process inside a real VM, runs the code, and exits. These are real KVM VMs, not containers: separate guest kernel, separate guest…

    Mar 2026 · github.com · its alternatives →

  6. 6

    Create microVMs from OCI images. Contribute to slp/krunvm development by creating an account on GitHub.

    2021 · github.com · its alternatives →

  7. 7

    ohai! I've released Lightwhale 3, which is possibly the easiest way to self-host Docker containers. It's a free, immutable Linux system purpose-built to live-boot straight into a working Docker Engine, thereby shortcutting the need for installation, configuration, and maintenance. Its simple design makes it easy to learn, and its low memory footprint should make it especially attractive during these times of RAMageddon. If this has piqued your interest, do check it out, along with its easy-to-follow Getting Started guide. In any event, have a nice day! =)

    Apr 2026 · lightwhale.asklandd.dk · its alternatives →

  8. 8

    Contribute to libriscv/drogon-sandbox development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  9. 9

    Build modular easily testable microservice & serverless apps

    2019 · micronaut.io · its alternatives →

  10. 10

    Hey HN, we're excited to share Lumier (https://github.com/trycua/cua/tree/main/libs/lumier), an open-source tool for running macOS and Linux virtual machines in Docker containers on Apple Silicon Macs. When building virtualized environments for AI agents, we needed a reproducible way to package and distribute macOS VMs. Inspired by projects like dockur/windows (https://github.com/dockur/windows) that pioneered running Windows in Docker, we wanted to create something similar but optimized for Apple Silicon. The existing…

    2025 · github.com · its alternatives →

  11. 11

    I've built this to make it easy to host your own infra for lightweight VMs at large scale. Intended for exec of AI-generated code, for CICD runners, or for off-chain AI DApps. Mainly to avoid Docker-in-Docker dangers and mess. Super easy to use with CLI / Python SDK, friendly to AI engs who usually don't like to mess with VM orchestration and networking too much. Defense-in-depth philosophy. Would love to get feedback (and contributors: clear & exciting roadmap!), thx

    2025 · github.com · its alternatives →

  12. 12

    Run VMs like containers. Pervasive as the sky.

    May 2026 · vyoma-vm.netlify.app · its alternatives →

  13. 13

    Hey all! I've been using this stack personally for a while now and decided to automate it a bit by turning it into a template I can reuse. Hope others might find it helpful!

    2025 · bhvr.dev · its alternatives →

  14. 14

    This project addresses the inefficiencies of traditional Dockerfile-based container builds where each customization layer creates storage bloat through duplicate dependencies from repeated apt-get install commands, network inefficiency from redundant package downloads across different images, and slow iteration cycles requiring full rebuilds of all previous steps. Our solution enables building minimal base images from scratch using debootstrap that precisely include only required components in the initial build, while allowing creation of specialized variants (Java, Kafka, etc.) from these…

    2025 · github.com · its alternatives →

  15. 15

    I've long wanted to harness QEMU/KVM for my desktop virtual machines, but I'm befuddled by virt-manager's lack of support for working NVIDIA 3D acceleration, dogmatic embrace of ugly XML, and the puzzling UI decision of having to click what seems like 15 buttons to attach an ISO to a VM image. When I further learned that NVIDIA's broken 3D acceleration is the fault of libvirt as opposed to QEMU's virtio driver, I had an idea... Behold, vm-curator! A fast and friendly VM management TUI written in Rust. You can create, configure, organize, and manage VMs directly with QEMU. No libvert. No…

    Jan 2026 · github.com · its alternatives →

  16. 16

    Hi HN! We’re Yann, Edouard, and Bastien from Koyeb (https://www.koyeb.com/). We’re building a platform to let you deploy full-stack apps on high-performance hardware around the world, with zero configuration. We provide a “global serverless feeling”, without the hassle of re-writing all your apps or managing k8s complexity [1]. We built Scaleway, a cloud service provider where we designed ARM servers and provided them as cloud servers. During our time there, we saw customers struggle with the same issues while trying to deploy full-stack applications and APIs resiliently. As…

    2023 · koyeb.com · its alternatives →

  17. 17

    An on-premises, bare-metal solution for deploying GPU-powered applications in containers - emergingstack/es-dev-stack

    2016 · github.com · its alternatives →

  18. 18LV

    Hello HN! We've been working on a new hypervisor https://kwarantine.xyz that can run strongly isolated containers. This is still a WIP, but we wanted to give the community an idea about our approach, its benefits, and various use cases it unlocks. Today, VMs are used to host containers, and make up for the lack of strong security as well as kernel isolation in containers. This work adds this missing security piece in containers. We plan on launching a free private beta soon. Meanwhile, we'd deeply appreciate any feedback, and happy to answer any questions here or on our slack…

    2021 · its alternatives →

  19. 19

    Over the past few months, as we scaled our internal AI Agents, we hit a dead end: Running LLM-generated arbitrary code in Docker is basically running naked on security due to container escape risks. But using full traditional VMs takes minutes to boot and eats too much memory to support high-density concurrency. We loved the developer experience of SaaS sandboxes on the market, but they are closed-source, expensive, and have too high a barrier to entry for self-hosting. So, our team decided to build our own. After months of grinding, using RustVMM and KVM, we built a blazing-fast,…

    Apr 2026 · github.com · its alternatives →

  20. 20

    Virtink is a Kubernetes add-on for running Cloud Hypervisor virtual machines. By using Cloud Hypervisor as the underlying hypervisor, Virtink enables a lightweight and secure way to run fully virtualized workloads in a canonical Kubernetes cluster.

    2022 · github.com · its alternatives →

  21. 21

    Build and run tiny vms from Dockerfiles. Small and sleek. - ottomatica/slim

    2019 · github.com · its alternatives →

  22. 22LD

    Hey HN, I’m excited to show you Layerfiles, an OSS project which gives you a single binary to build microvms using a syntax that looks like a Dockerfile. The project is currently in alpha, but it’s already able to build a VM on Linux hosts. MicroVMs are like containers, but have several upsides: - They can run on any OS, so you don’t need to run a wrapper VM like Docker Desktop does. - They also let you keep processes running during a build (RUN BACKGROUND), so you can run a webserver or build server in the background. - You can generally run them rootless without any extra configuration.…

    2022 · its alternatives →

  23. 23

    Firecracker-like microVMs for Proxmox VE — KVM isolation, under 200 ms boot. - rcarmo/pve-microvm

    Apr 2026 · github.com · its alternatives →

  24. 24

    This idea has been floating in my head for about 10 years. Some of you might remember LowEndSpirit.com back before it became a forum, I started that. I've been obsessed with making tiny, cheap VPS actually useful ever since. TierHive is my attempt to make 128MB VPS great again :) It's a NAT VPS (KVM) platform with true hourly billing. Spin up a server, use it for 3 hours, delete it, pay for 3 hours. No monthly commitments, no minimums beyond a $5 top-up. The tradeoff is NAT (no dedicated IPv4), but I've tried to make that less painful: - Every account gets a /24 private subnet with full…

    Mar 2026 · tierhive.com · its alternatives →

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