Open-source alternatives to ParamSpider

Gau is a command-line tool and passive URL enumerator designed to discover and aggregate known and historical web addresses for specific target domains. It functions as a collection framework that retrieves domain-specific data from public web archives and threat intelligence providers. The tool focuses on passive reconnaissance and open-source intelligence research to map attack surfaces without sending requests directly to target infrastructure. It aggregates data from multiple external sources to identify accessible web endpoints and forgotten pages. The system includes capabilities for r

This project is an open-source intelligence reconnaissance framework and recursive attack surface mapper. It functions as a containerized security scanner designed to map public-facing infrastructure, perform subdomain enumeration, and automate the gathering of open-source intelligence. The system employs a recursive discovery engine to iteratively explore target infrastructure, utilizing a plugin-based module architecture to extend scanning capabilities. It integrates third-party APIs for data enrichment and applies YARA rules across discovered assets to identify specific vulnerability patte

Waybackurls is a command-line OSINT tool that retrieves every known URL for a given domain from the Wayback Machine archive. It functions as a domain reconnaissance utility, discovering forgotten API endpoints, legacy pages, and hidden files by querying the public web archive API. The tool processes domains independently and statelessly, reading domain names from standard input and streaming discovered URLs line-by-line to standard output. This design enables seamless integration into Unix command pipelines, allowing users to chain waybackurls with other tools for filtering, sorting, and furt

Photon is a command-line web crawler designed for security reconnaissance and information gathering. It systematically traverses websites to discover URLs, map domain infrastructure, and identify associated subdomains by retrieving DNS records. The tool distinguishes itself through its ability to perform deep content analysis, including the extraction of sensitive data such as API keys and authentication tokens using user-defined regular expressions. It supports offline inspection by cloning crawled web content to the local filesystem, allowing for structural analysis without additional netwo

Amass is an attack surface management tool designed to identify, map, and inventory an organization's internet-facing digital assets. It functions as a security asset discovery engine that systematically expands an organization's known infrastructure footprint through recursive domain name resolution and the collection of intelligence from diverse public data sources. The platform distinguishes itself by utilizing a graph-based modeling approach to organize discovered resources. By maintaining a persistent graph database, it tracks the relationships between infrastructure components and norma

Katana is a web crawler and spider designed for security reconnaissance and web application mapping. It functions as a utility for identifying endpoints, forms, and API structures across web targets by combining standard HTTP request traversal with headless browser automation to render dynamic, JavaScript-heavy content. The tool distinguishes itself through its ability to maintain authenticated sessions and handle complex web interactions, such as automated form submission and captcha resolution. It provides granular control over the discovery process, allowing users to define specific crawl

reconftw is an attack surface management framework and reconnaissance workflow orchestrator designed to automate the discovery, mapping, and monitoring of external digital assets. It operates as a modular tool-chain pipeline that coordinates a sequence of security tools to perform intelligence gathering and vulnerability scanning. The project distinguishes itself through a cloud-native deployment model that parallelizes scanning workloads across a fleet of remote VPS instances to bypass local resource constraints. It utilizes container-based environment isolation to ensure consistent executio

SpiderFoot is an open-source reconnaissance and intelligence automation framework designed to streamline the collection and correlation of data for security investigations. It functions as a comprehensive platform that automates the querying of hundreds of public data sources to map digital footprints, identify exposed assets, and uncover potential security threats across an organization's external perimeter. The platform distinguishes itself through a modular, plugin-based architecture that executes data gathering tasks in parallel, supported by a directed graph data model that tracks relati

dirsearch is a command-line security tool and web path scanner used for discovering hidden directories and files on web servers. It functions as a recursive directory fuzzer and brute-force utility that identifies undocumented paths and sensitive files using wordlists and HTTP status codes. The tool distinguishes itself through template-driven path generation and an automated HTTP response filter that uses status codes, content length, and regex patterns to isolate valid targets. It supports recursive directory crawling to map complex web structures and provides state-persistence serializatio

Subfinder is a security reconnaissance framework designed for subdomain enumeration and attack surface management. It functions as a discovery engine that identifies and maps internet-exposed infrastructure, cloud-hosted assets, and network ranges to maintain a comprehensive inventory of an organization's digital footprint. The project distinguishes itself through a modular, template-driven scanning engine that executes security checks against discovered assets. It leverages cloud-native asset discovery to query provider APIs and infrastructure metadata, while supporting distributed agent orc

recon-ng is an open source intelligence reconnaissance framework designed to automate the collection and aggregation of public information. It is a modular intelligence tool that utilizes a system of pluggable modules to harvest target data, resolve DNS queries, and parse web content. The framework is built as an API-driven tool with a programmatic interface to integrate with other security workflows. It is provided as a containerized application, using Docker to ensure a consistent environment for running reconnaissance tasks and managing a persistent data store. Its capabilities cover exte

Fetches javascript file from a list of URLS or subdomains.

Automation for javascript recon in bug bounty.

LinkFinder is a security reconnaissance and static analysis tool designed for JavaScript endpoint discovery. It extracts absolute and relative URLs and parameters from JavaScript files to map the attack surface of web applications and identify hidden API routes. The tool operates through static code analysis and regular expression pattern matching to find endpoints without executing the source code. It includes a data processor for importing exported files from Burp Suite, enabling the batch analysis of multiple JavaScript assets in a single execution. The system provides capabilities for do

SecretFinder - A python script for find sensitive data (apikeys, accesstoken,jwt,..) and search anything on javascript files

httpx is a suite of tools and libraries for HTTP reconnaissance, infrastructure discovery, and DNS resolution. It functions as a command line toolkit for extracting metadata and status codes from HTTP targets and CIDR ranges, as well as a Go library for integrating these probing capabilities into custom programs. The project distinguishes itself through specialized infrastructure profiling, using TLS fingerprinting to extract JARM hashes and certificate details. It identifies underlying components such as CDN usage, Autonomous System Numbers, and CNAMEs to map web server software and infrastr

TscanPlus is an external attack surface management tool and security reconnaissance framework designed for discovering network assets, enumerating subdomains, and mapping internet-facing services. It functions as a vulnerability scanning framework and network asset discovery suite to identify security exposure and map active hosts. The platform distinguishes itself by integrating an intelligence layer that uses large language models to analyze raw scan results and identify security weaknesses within JavaScript code. It also includes a dedicated proxy management system that validates and rotat

Dalfox is an automated web application security tool specifically designed for discovering and verifying cross-site scripting vulnerabilities. It functions as an XSS vulnerability scanner that analyzes HTTP parameters and DOM structures to identify reflected, stored, and blind injection points. The project distinguishes itself by providing a Model Context Protocol server and a REST API, allowing artificial intelligence agents and remote interfaces to trigger and manage security scans programmatically. It utilizes a payload mutation engine and fingerprinting strategies to execute WAF evasion t

Puredns is a fast domain resolver and subdomain bruteforcing tool that can accurately filter out wildcard subdomains and DNS poisoned entries.

Findomain is a subdomain enumeration and infrastructure analysis tool designed for attack surface mapping. It functions as a DNS reconnaissance suite that discovers subdomains using multiple data sources and API keys to identify the full extent of a target network. The system acts as an attack surface monitor by tracking subdomain changes over time and sending real-time alerts via webhooks when new assets are detected. It includes specialized capabilities for detecting DNS wildcards to filter false positives and resolving subdomain IPs through parallel resolution. The tool provides a workflo

OSINT scanning tool which discovers and maps directories found in javascript files hosted on a website.

Information Gathering tool - DNS / Subdomains / Ports / Directories enumeration

FOCA is a digital forensics metadata analyzer and open-source intelligence tool used to extract hidden information from various document types. It functions as a metadata extraction tool that isolates technical data and EXIF information from PDFs, office documents, and SVG files. The system integrates an open-source intelligence scanner that identifies and downloads target files from the web using multiple search engine APIs. This allows for the automated discovery and acquisition of remote web assets for batch analysis and digital evidence gathering. The software provides capabilities for d