Butter

Active

Embedded Sandboxes for Agents

What it does

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.

Its site says now · captured 2026-08-23

Butter - Local Agent Sandboxes

Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents.

Next to it in Agent infrastructure · lightweight sandbox runtime for agents

  • BlaxelY Combinator X25

    The perpetual sandbox platform

  • Browser UseY Combinator W25

    Leading open-source web agent project with 50k stars in 3 months

  • CorsairY Combinator W25

    Connect your users to their apps

  • SkyfirePlug and Play PnP 2025

    Autonomous payments and identity for AI and AI agents.

  • AirweaveY Combinator X25

    The open-source context retrieval layer for agents

  • CapacitiveY Combinator X25

    The data gateway for agents.

  • CuaY Combinator X25

    Give every agent a cloud desktop

  • HelixDBY Combinator X25

    The fastest & most scalable graph-vector database on the market