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Automate legacy software on a Windows Sandbox
by theaniketmaurya·May 26, 2026·1 point·1 comment
AI Analysis
●●●BangerBig BrainZero to One
Finally lets AI agents automate Windows-only legacy apps from Linux pipelines.
Strengths
- •Python API abstracts VM lifecycle with the same interface as Linux guests
- •Solves the real problem that most business software lives on Windows, not Linux
- •Disposable VM pattern perfect for agent automation and test pipelines
Weaknesses
- •Niche audience limited to teams building computer-use agent infrastructure
- •Still V1 with room for hardening around VM image management
Category
Target Audience
AI agent developers, automation engineers
Similar To
QEMU · libvirt · TestContainers
Post Description
The majority of legacy systems run on the Windows operating system.
It is hard to automate with computer-use agents because of weird pop-ups, lack of a DOM like browsers, random clicks, and cost at scale.
We built an agent harness and sandbox to automate any legacy software. Our Windows Sandbox (SmolVM) is open-source and can be used with a Python SDK or CLI - https://github.com/CelestoAI/SmolVM
We will also publish our agent harness benchmark report soon.
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