The top bug bounty hunting tools are generally categorized into HTTP Proxies/Traffic Analyzers, Automated Scanners/Exploitation Tools, and Reconnaissance Tools. The most essential tool, particularly for web application assessments, is Burp Suite.
Top Bug Bounty Hunting Tools
The most used tools for web application security assessments, often used by bug bounty hunters, fall into several key categories.
HTTP Proxies, Requests, Responses, and Traffic Analyzers
These tools are fundamental for analyzing how an application works by intercepting and modifying the traffic between your browser and the web server.
| Tool | Type/Purpose | Key Features & Notes | Pricing/Licensing |
| Burp Suite | Web Proxy, Testing Toolkit | The industry-standard tool. Features include Proxy, Repeater (manually modify and resend requests), Intruder (automated fuzzing/brute-forcing), and Extender (plugins via BApp Store). 87% of users on HackerOne voted it as the tool that helps them most when hacking. | Community Edition: Free, but lacks the automated scanner and some advanced features. Professional Edition: $475 per user per year (as of 2025 pricing) and includes the powerful vulnerability scanner. |
| ZAP (Zed Attack Proxy) | Web Proxy, Testing Toolkit | Evolved from Paros Proxy, developed by OWASP. Very similar to Burp Suite, offering a repeater, intruder, fuzzer, and a vulnerability analysis tool. Highly extensible via its marketplace. | Open Source and Free. |
| Fiddler | HTTP Debugging Proxy | More targeted at .NET developers. Useful for analyzing applications developed in .NET where the binary format might be difficult to understand by other proxies. Lacks the advanced assessment options of Burp or ZAP. | Commercial and Free tiers available. |
| Wireshark | Network Protocol Analyzer | An open-source sniffer for analyzing network traffic in raw mode. Used less commonly than an HTTP proxy in web bug bounty hunting, but essential when dealing with non-standard ports (like 80 or 443) or custom protocols. | Open Source and Free. |
Automated Discovery and Exploitation Tools
These tools help save time on repetitive tasks and are excellent for finding “juicy bugs” such as XSS and SQL injection.
| Tool | Purpose | Key Features & Notes | Licensing |
| sqlmap | SQL Injection Exploitation | A great tool for automating the detection and exploitation of SQL injection vulnerabilities, handling different DBMS syntaxes and information extraction. | Open Source and Free. |
| Acunetix | Vulnerability Scanner | Helps detect common vulnerabilities. Includes a fuzzer (similar to Burp’s Intruder) and an Attack Launcher to reproduce detected vulnerabilities directly within the tool. Note: Its high traffic generation (noise) can lead to blocks in public programs. | Commercial (Licensed). |
| Nikto | Web Server Scanner | A limited vulnerability scanner that uses signatures to detect well-known vulnerabilities and misconfigurations in web servers and applications. Useful for checking for outdated/vulnerable components. | Open Source and Free. |
| Nuclei | Template-Based Scanner | An increasingly popular tool that automates scanning using YAML-based templates, allowing for fast, customized scanning for specific vulnerabilities. | Open Source and Free. |
| Websecurify/SECAPPS | Web Security Scanner | Originally an open-source web vulnerability scanner, it evolved into the commercial, browser-based SECAPPS. Has free versions with limitations. | Commercial (Paid Subscription). |
Reconnaissance and Information Gathering Tools
In bug bounty hunting, scope is usually limited, but effective reconnaissance is still crucial for expanding the attack surface within the defined limits.
| Tool | Purpose | Key Features & Notes | Licensing |
| Nmap | Port Scanner & Service Enumerator | The most powerful network utility for detecting open ports and services. Its Nmap Scripting Engine (NSE) allows for vulnerability scanning similar to Nikto but with greater community support and interactivity. | Open Source and Free. |
| Shodan | Internet-Connected Device Search Engine | The largest IT database in the world, containing information about hosts, technologies, sensitive information, and configuration files tracked by searchers. | Commercial (Full access via paid API/subscription). |
| Knockpy | Subdomain Discovery | A command-line tool for discovering subdomains of a main domain, helping to find hidden applications or modules. | Open Source and Free. |
| Recon-ng | Reconnaissance Framework | A modular framework that uses different sources to gather information (name servers, IP addresses, subdomains, etc.) about a target. | Open Source and Free. |
| What CMS | CMS Identification | An online tool that determines if a website uses a CMS (like WordPress or Drupal) and, if so, identifies which one. This helps researchers look for public vulnerabilities affecting that specific CMS version. | Free (Online Tool). |
Browser Extensions
Simple browser add-ons and extensions can significantly improve testing efficiency.
| Tool | Purpose | Key Features & Notes | Platform |
| FoxyProxy | Proxy Management | Allows the user to quickly switch between different proxy servers (e.g., Burp Suite, ZAP, or a VPN proxy) and configurations. Useful for testing from different geolocations. | Firefox/Chrome Extension |
| User-Agent Switcher | HTTP Header Modification | Helps test how an application behaves across different browsers and devices by allowing the user to easily switch the User-Agent parameter in the HTTP request. | Firefox/Chrome Extension |
| Cookies Manager+ | Cookie Manipulation | Allows for creating and modifying cookies. Essential for checking authorization and authentication controls where user sessions and privileges are stored in cookies. | Firefox Extension |
| HackBar | Request Manipulation | A simple add-on that integrates a basic proxy into the browser, providing the capability to quickly manipulate HTTP requests (URL encoding, POST/GET switching, etc.) for simple testing. | Firefox/Chrome Extension |