Prompt Gate

Privacy-first, on-device DLP that blocks unauthorized AI tools and inspects content for secrets

Desktopfree

Prompt Gate is a free, open-source, on-device data loss prevention tool that blocks unauthorized AI tools at the DNS layer and inspects content sent to approved AI tools for secrets and PII, running entirely on-device. It's for IT and security teams who need to govern which AI tools employees can use and prevent sensitive data from being pasted into them, without routing traffic through an external cloud DLP service.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Prompt Gate - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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