Real Linux, in milliseconds.

Full VMs with systemd and a real kernel — on your Mac, your servers, or your cloud.

SandboxesLinux machines via API

ServicesDatacenter on a diet

alex@n100:~$

Slicer Sandboxes

API-driven microVMs for automation in <1s

Isolated Linux VMs with the ease of containers — a real kernel, systemd, and full OS. Launch from code, tear down when done.

Goodbye approval fatigue

Run Claude, Codex, and OpenCode in isolated sandboxes — full auto, nothing can escape. Launch via REST API or Go SDK.

Cold boot in under a second

ZFS snapshots make every launch instant. Test, throw away, repeat — no waiting for images or provisioning.

Program Linux like an API

Built-in guest agent for exec, cp, shell, metrics, and port-forwarding. No SSH setup, no config.

Self-hosted. Zero metering.

E2B, Modal, and Daytona meter by the second. Slicer runs on your hardware — flat rate, data never leaves your network.

# Run headless workloads just like containers
# - from the CLI, or from code.

$ slicer vm new \
    --userdata-file setup_opencode.sh
$ slicer vm cp ./pr.tgz vm-1:/home/ubuntu/
$ slicer vm exec vm-1 \
    -- tar -xcf /home/ubuntu/pr.tgz
$ slicer vm exec vm-1 opencode \
    -m "Review this code and quit when done" \
    >> /tmp/REVIEW.md
$ slicer vm vm-1:/tmp/REVIEW.md ./REVIEW.md

But it's not just a sandbox — it's a full OS.

Every microVM runs a real kernel with systemd, package managers, and cron. Run Kubernetes clusters, long-lived servers, or replace your entire dev VM stack — one platform.

Slicer for Mac

Your team develops on Mac. They deploy to Linux.

No cloud access, no VPN, no AWS account needed. Real Linux with systemd on every developer's laptop — matching production.

No cloud spend

No AWS accounts, no EKS clusters, no cloud VMs. Real Linux on the hardware your team already owns.

Kubernetes on your laptop

Spin up K3s inside a Slicer VM. Test Helm charts, validate RBAC, iterate on controllers — without touching the shared cluster.

Extend OS images with Docker

Slicer images are OCI images. Add your framework, packages, or toolchain with a FROM in a Dockerfile — build once, reuse everywhere.

Replace Docker Desktop, Colima, Lima, and UTM

Ephemeral sandboxes and long-lived servers in one tool. Faster boot, real systemd, and a workflow that just works.

For developers

“I need real Linux but I'm stuck on a Mac”
“We don't have our own cloud accounts”
“Docker Desktop is eating my battery alive”
“I don't want to manage VirtualBox, I just need a shell, now.”

For engineering managers

“My team keeps asking for cloud access”
“We're paying for EKS just for dev/test”
“Every VM means a ServiceNow ticket and days of waiting”
5 seats for $125/mo — cheaper than one month of EKS

Slicer Services

Long-lived microVMs for servers, clusters, and labs

Persistent workloads on bare-metal instead of expensive cloud instances. Kubernetes, dev environments, homelabs — full OS with systemd.

Disposable Kubernetes clusters

One of the fastest ways to spin up HA Kubernetes clusters for development, testing, and demos.

Cost-effective bare-metal

Run on bare-metal at a fraction of cloud costs. No more unhinged cloud spend for dev and test.

Ubuntu & Rocky Linux

Boot a Debian- or RHEL-like OS with systemd, matching your production environment.

OCI images — extend with Docker

Slicer's base images are OCI images. Extend them with a Dockerfile — add packages, tooling, or your own software in a single build step.

Dockerfile

# Extend a Slicer OS image with Docker/BuildKit

FROM ghcr.io/openfaasltd/\
  slicer-systemd-ubuntu24.04:\
  6.1.90-x86_64-latest

RUN apt-get update -qy \
  && apt-get install -qy \
    python3 python3-pip

RUN curl -sLS \
  https://get.docker.com | bash
RUN systemctl enable --now docker
RUN usermod -aG docker ubuntu

Battle-tested in production

Slicer's code has run 3M+ CI minutes on Arm runners for CNCF — securing the ecosystem before it hit GitHub's roadmap.

Real Linux, on your hardware, in milliseconds.

Start with a 14-day free trial. Runs on your own hardware — nothing leaves your machine.

$25/mo · Team $25/mo/seat · Platform $250/mo/server

See Plans & Pricing Talk to Our Team