Sandboxer vs Solari

Solari sells browsers, headless sandboxes and desktop VMs for agents, all on Cloud Hypervisor microVMs with memory-snapshot starts and pause/resume. Sandboxer uses the same hypervisor but exposes a full Ubuntu VM with nested KVM and no session cap on paid plans. Pick Solari if you also need managed browsers and E2B or Daytona-style SDK compatibility; pick Sandboxer for long-running full-Linux machines.

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

At a glance

Sandboxer and Solari compared
Capability	Sandboxer	Solari
Isolation	microVM Cloud Hypervisor, its own kernel	Cloud Hypervisor microVM
Full Linux with root	Ubuntu 24.04, sudo, systemd	partial Commands run as root; default dedicated isolation, while shared sandboxes make /usr, /etc, /var read-only.
Docker inside	Preinstalled
Nested virtualization (/dev/kvm)
Pause and resume with memory	Running processes come back	pause() saves state; resume brings the sandbox back including processes and memory.
Fork a sandbox	Copy-on-write disk copy that boots fresh	fromSnapshot starts a new machine from a snapshot holding disk and memory image.
HTTPS URL per port	Private with a token, or public	previewUrl(port) returns a signed one-hour-token URL; ?public=1 or open tunnels allow tokenless access.
Longest session	No limit on paid plans Auto-stop is up to 30 days or off	1 h Free, 5 h Starter, 24 h Professional, unlimited Enterprise Per-plan maximum session length.
Billing	Per second, flat rate per size Stopped sandboxes are free	per vCPU-hour and GB-hour from a credit balance 1 vCPU / 2 GB sandbox is $0.057/h on Starter; no overage billing.
GPUs
Self-host or open source
Regions	US East (Virginia) and EU Central (Finland)	one: US West (Oregon)

= not documented publicly.

Where Solari is strong

Sandboxes start from memory snapshots in milliseconds.
Pause and resume keep processes and memory.
One API key covers browsers, sandboxes and desktop VMs.
Offers Daytona and E2B compatibility layers.

Where Sandboxer differs

Solari caps session length by plan (1 h Free to 24 h Professional); Sandboxer paid plans have no time limit.
Solari sandbox size tops out at 8 vCPU and 16 GB; Sandboxer's xlarge is 16 vCPU / 32 GB (xlarge, on the $100 plan or higher).
Solari's docs do not document Docker or nested KVM; Sandboxer has Docker preinstalled and /dev/kvm.
Solari runs a single region today (US West); Sandboxer runs in us-east and eu-central.

Pick Solari if

You need managed cloud browsers and desktops alongside sandboxes.
You want E2B or Daytona SDK compatibility.
You want to rewind a machine to a snapshot in place.

Pick Sandboxer if

You need sandboxes running for more than 24 hours without a cap.
You need Docker and nested KVM inside the sandbox.
You want coding agents preinstalled and plan dollars returned as machine time.

Sources

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

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