DNSTwist detects lookalike domains used in homograph phishing, typosquatting, and brand impersonation.
Open source
9 alternativesopenSquat
openSquat detects look-alike domains that resemble an organization’s legitimate domains, helping identify possible impersonation.
About openSquat
openSquat is an open-source OSINT tool that scans daily newly registered domain feeds for look-alike domains based on user-supplied keywords. It identifies types including typosquatting, IDN homograph, doppelganger and bitsquatting variants that may impersonate a brand.
It runs from the command line on Python 3.10+ and supports validation with Quad9 DNS, Certificate Transparency logs, VirusTotal, port checks for 80/443 and phishing database cross-reference. Results can be saved in TXT, JSON and CSV, with confidence levels 0-4. It uses an open-core model with Community, Premium Feed and Premium API modes.
Key features
- Scans daily newly registered domain feeds for look-alike domains
- Detects typosquatting, IDN homograph, doppelganger and bitsquatting variants
- Validates domains with Quad9 DNS and Certificate Transparency checks
- Checks domain reputation through VirusTotal integration
- Exports results in TXT, JSON and CSV formats
- Provides confidence levels 0-4 and Community, Premium Feed and API modes
Best for: Security staff and brand owners comfortable running Python command-line tools to watch for impersonating domains.
Good for
- Open-source core installable via pip or repository clone
- Combines similarity detection with DNS, certificate, VirusTotal and phishing checks
- Supports TXT, JSON and CSV output with adjustable confidence levels
Watch out for
- Requires Python 3.10+ setup and command-line use with a keyword file
- Lower confidence thresholds return more results with more false positives
- Advanced capabilities are delivered through commercial services requiring an API key
openSquat at a glance
- Category
- Privacy & Security › Website & URL Scanners
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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openSquat FAQ
What is needed to run openSquat?
Python 3.10+ with its dependencies, installed with pip install opensquat or by cloning the repository, and a keywords file passed with -k.
How do confidence levels work?
Levels 0 to 4 range from very high accuracy with fewer results to very low with more results and more false positives; level 1 is the default.
What operating modes are available?
Community mode runs by default with no flags, plus Premium Feed and Premium API modes that share a single openSquat API key.
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