Open-source Shellbox alternatives
10 open-source sandbox providers you can use instead of Shellbox. Shellbox has a lower hourly price than all of them. Celesto Cloud is next, at $0.030 for 2 vCPU and 4 GiB. Beam Sandboxes offers GPUs.
Updated
Shellbox, for reference
ShellboxLinux microVMs for developers and AI agents, made and controlled over SSH.
IsolationFirecracker
2 vCPU · 4 GiB$0.020 / hr
Free tierNot listed
Max sessionNo limit
10 open-source alternatives to Shellbox
Sorted by hourly price for 2 vCPU · 4 GiB, low to high
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Celesto Cloud
Cloud computers for AI agents, each in a microVM.DesktopMicroVMSnapshot and resume keep processes intact$0.030per hour
Everstack
Open-source platform that runs isolated sandboxes for AI agents.DesktopSnapshots and templates$5 credit, valid 30 days after signup$0.133per hour
$0.158per hour
microsandbox cloud
Hosted microVM sandboxes for AI agents and untrusted code.MicroVMDisk only, from stopped persistent sandboxesFree plan, 5 computer-hours a month$0.165per hour
Smol Machines
Hosted Linux microVMs with their own kernel, for agents and untrusted code.Bills active CPU onlyMicroVMCheckpoints keep disk, RAM and processes. Branch makes live copy-on-write clones.$0.165per hour
$0.166per hour
PandaStack Sandbox
Firecracker microVM sandboxes for AI agents.Bills active CPU onlyFirecracker$5.40 usage credit every month$0.173per hour
Beam Sandboxes
Isolated, secure environments for running untrusted code at scale.GPUContainerFilesystem or live memory$0.227per hour
Not listedper hour
Not listedper hour
Side by side
Shellbox first, then the 10 alternatives
Provider
Isolation
vCPU / hr
GiB / hr
Free tier
Max session
GPU
- Isolation
- Firecracker
- vCPU / hr
- $0.010
- Free tier
- Not listed
- Isolation
- MicroVM
- vCPU / hr
- $0.015
- Free tier
- $5 credit
- Isolation
- Not listed
- vCPU / hr
- $0.067
- Free tier
- $5 credit
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- Free plan
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- Firecracker
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- Firecracker
- vCPU / hr
- $0.054
- Free tier
- $5.40 / month
- Isolation
- Container
- vCPU / hr
- $0.068
- Free tier
- Not listed
- Isolation
- Container
- vCPU / hr
- Not listed
- Free tier
- Not listed
- Isolation
- Container
- vCPU / hr
- Not listed
- Free tier
- None