
NULLSQUARE
PromptGuard
Block AI on every device. Nullgen’s free browser extension stops AI prompts; the iOS, Android, Mac, and Windows apps block known AI apps and sites. For families, schools, and IT.

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| Website | nullgen.ai | diffee.me |
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| Company | Startup from the United States · 1 - 9 employees | — |
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In their own words, as submitted to SaaSHub.


Nullgen is an endpoint security and content-filtering solution designed for enterprise IT, security teams, and educational institutions to eliminate generative AI shadow IT. It prevents users from submitting proprietary code, confidential business data, or sensitive student records into...
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Continuous AI security testing for apps, APIs, cloud, and private environments — review findings, reports, and live agent activity in one place.
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