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Sandboxer vs STACKIT Compute Engine

STACKIT Compute Engine provides virtual machines (Linux or Windows) and GPU instances in a European sovereign-cloud offering. It is general infrastructure rather than a sandbox service. Pick STACKIT for EU data-sovereignty needs; pick Sandboxer for fast disposable agent environments.

Checked against STACKIT Compute Engine's public docs on October 24, 2026. Sources are linked in the table and listed below.

At a glance

Sandboxer and STACKIT Compute Engine compared
CapabilitySandboxerSTACKIT Compute Engine
IsolationmicroVM
Cloud Hypervisor, its own kernel
Virtual machine (hypervisor not stated)
CPU types are either overprovisioned or non-overprovisioned (d suffix).
Full Linux with root
Ubuntu 24.04, sudo, systemd
Docker inside
Preinstalled
Nested virtualization (/dev/kvm)
Pause and resume with memory
Running processes come back
Fork a sandbox
Copy-on-write disk copy that boots fresh
HTTPS URL per port
Private with a token, or public
Longest sessionNo limit on paid plans
Auto-stop is up to 30 days or off
Persistent VM, no session limit
Billed while the server exists.
BillingPer second, flat rate per size
Stopped sandboxes are free
Hourly pay-as-you-go in EUR
OS licences (Windows, Red Hat) are billed extra per vCPU/month.
GPUs
NVIDIA A100, L40S and H100 instance types.
Self-host or open source
Hosted service.
RegionsUS East (Virginia) and EU Central (Finland)Germany South (EU01) and Austria West (EU02)
As listed in the price list.

= not documented publicly.

Where STACKIT Compute Engine is strong

  • European sovereign-cloud positioning with an emphasis on digital sovereignty and EU security standards.
  • Machine families from small to memory-optimised, including AMD and Arm options and non-overprovisioned 'd' types.
  • GPU instances with A100, L40S and H100 hardware.
  • Windows and Red Hat Enterprise Linux options with licence pricing published.

Where Sandboxer differs

  • STACKIT is general VM infrastructure; the pages reviewed do not document pause-with-memory, fork or agent APIs.
  • Billing is hourly rather than per second.
  • STACKIT offers GPU instances and two EU locations; Sandboxer runs in us-east and eu-central and has no GPUs.
  • STACKIT supports Windows VMs; Sandboxer has no Windows or macOS VMs.

Pick STACKIT Compute Engine if

  • Data must stay in a European sovereign cloud (Germany or Austria).
  • You need Windows or RHEL VMs, or GPU instances.
  • You want conventional long-lived servers on an EU provider.

Pick Sandboxer if

  • You want a full Ubuntu 24.04 VM with its own kernel, root/sudo, systemd and Docker preinstalled, and nested KVM (/dev/kvm).
  • You want to stop a sandbox and resume it with running processes back, with stopped sandboxes costing nothing.
  • You want coding agents (Claude Code, Codex, OpenCode and others) preinstalled, driven through a prompt API with streamed events, plus any port exposed as an HTTPS URL.

Sources

Products change. If something here is out of date, email hello@sandboxer.com and we'll fix it. STACKIT Compute Engine is a trademark of its owner. Sandboxer is an independent product and is not affiliated with STACKIT Compute Engine.

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