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    Quick Info

    Best For

    Security researchers, bug bounty hunters, and analysts who need fast, private reconnaissance without creating an account

    Category

    AI Business

    Key Features

    Real-time infrastructure mapping
    DNS record analysis
    Certificate transparency checks
    Email pattern discovery

    Community Rating

    CyberShell

    free • From Free
    Updated Aug 2026

    CyberShell is an open-source intelligence terminal that runs entirely in the browser. Point it at a domain and it maps the surrounding infrastructure in real time: DNS records, certificate transparency logs, subdomain exposure, and likely email address patterns are pulled together into a single reconnaissance view. The defining design decision is that everything happens client-side. There is no account to create, no server storing queries, and no cloud log of what was investigated — which matters a great deal to security researchers, bug bounty hunters, and journalists who cannot leave a trail on a third-party service. Findings export as PDF, HTML, or CSV, so a reconnaissance pass can drop straight into a report or a pentest deliverable. It is free and open source, making it an easy addition to a research toolkit alongside heavier commercial OSINT platforms.

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    Pros

    • Completely free and open source
    • Client-side processing — queries never touch a server
    • No login or signup required to start
    • Multiple export formats for reporting
    • Combines DNS, certificates, and email patterns in one view

    Cons

    • Terminal-style interface has a learning curve for non-technical users
    • Client-side execution limits some deeper scan types
    • No saved history or team workspace
    • Smaller feature set than paid enterprise OSINT platforms
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    All Features

    Real-time infrastructure mapping
    DNS record analysis
    Certificate transparency checks
    Email pattern discovery
    Client-side, privacy-first processing
    PDF, HTML, and CSV export

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