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Work · January 2, 2022

Fence

AI powered security helping keep users safe online.

Fence launched on January 2, 2022 with 87 votes, #480 of 2,891 launches that month and more than 75% of that year's launches.

Visit site ↗Fence alternativestop 17% of January 2022

What it does

Fence is a new AI-driven browser extension that protects users from dangerous websites, questionable content, malicious ads and tracking.

Does a similar job

all alternatives →
  • Fence – Sandbox CLI commands with network/filesystem restrictionsJan 2026 · github.com · ▲78

    Hi HN! Fence wraps any command in a sandbox that blocks network by default and restricts filesystem writes. Useful for running semi-trusted code (package installs, build scripts, unfamiliar repos) with controlled side effects, or even just blocking tools that phone home. > fence curl https://example.com # -> blocked > fence -t code -- npm install # -> template with registries allowed > fence -m -- npm install # -> monitor mode: see what gets blocked One use-case is to use it with AI coding agents to reduce the risk of running agents with fewer interactive permission prompts: >…

  • ThreatSlayer2023 · chromewebstore.google.com · ▲85

    Free enterprise grade security for your personal browser

  • WebWall2021 · trywebwall.com · ▲74

    See how websites use your data and block trackers & threats

  • Context FenceAug 2026 · contextfence.dev · ▲8

    Runtime firewall for AI coding agents.

  • WebBrainAug 2026 · webbrain.one · ▲117

    The sidebar agent for the rest of us

  • FoilMar 2026 · getfoil.ai · ▲83

    An AI agent that monitors your AI agents

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