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rderaison/bromure

Bromure is an MIT-licensed macOS-native sandboxing tool for agentic coding and web browsing, written in Swift, that wraps an untrusted agent in a tight VM-level boundary with developer-tools-friendly defaults. It is one of the first polished macOS-native answers to the 'let the agent do real work without letting it own my laptop' problem.

Open source →Back to radar
Score7.3
Popularity55.0
Risknone
TierSilver
Score breakdown
Usefulness7.0
Novelty8.0
Momentum6.0
Maturity6.5
Open-source/build8.4
Evidence7.2
Workflow potential8.1
Setup ease6.4

Popularity is tracked separately. Support, ads, sponsorships, and tips never affect these signals.

Why it matters

Useful for Mac-based developers who want to give a coding agent real filesystem and browser access without giving it the laptop: install Bromure, point it at a non-sensitive project, and walk the sandbox boundary in the UI to confirm the agent cannot reach anything outside the intended scope.

Who should use it

macOS developers running coding agentssolo founders using agents on personal machinessecurity-conscious Apple-platform users

Who should skip it

Skip if the source link, docs, or setup requirements do not match your workflow.

Risk explanation

macOS-native VMs are still slower than native; expect some overhead on first run and validate that your agent's tool calls still meet latency targets.

Evidence links

Closest alternatives / related signals

sandboxmacosagentsecuritybromurevm