Butter

Local Agent Sandboxes – Embedded Sandboxes for Agents

Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents. It embeds directly into your local process, providing a safe bash environment without the overhead of VMs or remote infra.

12 alternatives to Butter

Ranked by how well each tool replaces Butter: shared features, audience, price and popularity.

shuru
Run AI agents in local-first microVM sandboxes
53 out of 100 match—
Archal
Testing sandboxes, built for AI agents
Has a free plan.
Free plan
51 out of 100 matchUsage-based
VibeBox
Your ultrafast open source AI sandbox.
Is open source.
Open source
50 out of 100 match—
SwarmNode
Give your AI agent its own computer. Always on, fully isolated and accessible from anywher
Has a free plan.
Free plan
48 out of 100 match$19/mo
Bytebot
Desktop agents that use computers like a human, at cloud scale
Is open source.
Open source
48 out of 100 match—
Arga Labs
Real-world sandboxes for testing and training AI agents
Has a free plan.
Free plan
47 out of 100 match$1,250/mo
Brainbase
AI agents that learn and improve themselves
Has a free plan.
Free plan
47 out of 100 match$500/mo
pi pod
Run pi sessions in isolated sandboxes (pods) on a server you run, in composable en
Is open source.
Open source
47 out of 100 match—
Bento
Production infrastructure for AI agents
47 out of 100 match—
boat
Powerful, affordable cloud VMs for long-running agents.
Has a free plan.
Free plan
43 out of 100 match$20/mo
Freestyle
Freestyle provides full Linux VMs for AI agents, built for complex tasks that run for hour
Has a free plan.
Free plan
43 out of 100 match$50/mo
Blaxel
Infrastructure for autonomous agents.
Has a free plan.
Free plan
42 out of 100 matchUsage-based