Private Username OSINT Tracker

Zero-Trust Utilities

What is Private Username OSINT Tracker?

Private Username OSINT Tracker is a client-side directory scanner designed to verify if a handle exists on popular platforms. This is a common starting point in investigations, digital audits, and background checks. Most username finder websites log every search you perform. By resolving platform API requests natively in the browser via CORS (Cross-Origin Resource Sharing), this tool operates with a zero-trust model: your queries never touch a middleman server, keeping your investigations private.

How it works

The tool sends fetch requests to public CORS-friendly endpoints of major sites (such as GitHub, GitLab, Wikipedia, Dev.to, and Keybase). By evaluating the response status code (e.g. 200 OK vs 404 Not Found) or response body contents, it verifies the existence of the profile. This entire sequence is run completely client-side in parallel.

Features & Benefits

Zero Logging: The target username is queried directly from your device, leaving no search history on third-party servers
CORS-Native Checks: Uses official public endpoints that support CORS directly, requiring no intermediate proxies
Real-Time Results: Scans 8+ popular developer, tech, and encyclopedia platforms in parallel
Link Exporting: Export all active profile links immediately as a clean JSON file

Frequently Asked Questions

Why does it check only certain sites?

Many platforms block client-side requests with strict CORS policies. To maintain absolute privacy without using intermediate servers, we only query platforms that support browser-native requests.

Is this tool related to Sherlock?

Yes, it is inspired by the popular CLI tool Sherlock, but rebuilt specifically for browser environments without requiring any backend installation or proxy configuration.

Can I query usernames containing special characters?

Yes, but some platforms restrict usernames to alphanumeric characters. The tool handles validation for each platform's constraints.

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