PortSwigger Web Security is a UK-based software house that has become synonymous with rigorous web-application penetration testing. The company’s product line is built around Burp Suite, an integrated platform that combines a intercepting proxy, scanner, repeater, intruder and numerous specialist add-ons to map, analyze and exploit modern web estates. Security consultants use the free Community Edition to manually probe parameters, decode tokens, fuzz input fields and chain requests through its collapsible tabs, while larger red-team engagements rely on Burp Suite Professional for its automated crawler, authenticated scanning engine and extensive vulnerability database that flags OWASP Top Ten issues, logic flaws and out-of-band interactions in real time. Both editions share the same extensible architecture, allowing researchers to load custom BApps written in Python or Java that automate niche checks such as JWT weakness, GraphQL introspection or SAML bypass. Typical workflows begin by configuring the proxy listener inside a browser, capturing traffic as the tester navigates single-page applications or API gateways, then sending interesting requests to the Repeater or Intruder modules for iterative payload variation. Findings are collated in a live site map that annotates severity, confidence and remediation advice, exporting directly into PDF reports for developers or ticketing systems. PortSwigger software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources like winget, always pull the latest builds, and support batch installation of multiple editions.