30 open-source projects similar to owasp/amass, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Sublist3r is a subdomain enumeration tool and passive reconnaissance framework designed to discover subdomains by querying search engines and public intelligence sources. It functions as a security tool for identifying the digital footprint of a target domain. The project provides both passive enumeration through multi-source API aggregation and active discovery via a DNS brute force tool. It includes a TCP port scanner to identify active services and open ports on discovered subdomains, facilitating attack surface mapping. The tool can be used as a standalone utility or as a Python security
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
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
Knock is an attack surface management tool and DNS reconnaissance framework used for discovering and mapping an organization's external infrastructure. It functions as a subdomain enumeration tool and HTTP security scanner to identify reachable hosts and organizational assets. The project distinguishes itself by using a passive-active hybrid enumeration strategy, combining external API lookups with active wordlist brute-force attacks and DNS zone transfers. It includes a multi-stage validation pipeline that detects DNS wildcard records and verifies host connectivity to filter out false positi
Naabu is a port scanner library and tool that probes hosts for open ports using SYN, CONNECT, and UDP methods to identify active services. It functions as a Go library for embedding port scanning into programs, and as a standalone tool that accepts targets as hostnames, IP addresses, CIDR ranges, or ASN numbers. The tool discovers live hosts before scanning, filters ports by range or top lists, and can integrate with Nmap for service version detection. The project distinguishes itself through its SYN-based port probing approach that sends TCP SYN packets and analyzes responses without complet
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
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
theHarvester is a command-line utility designed for gathering open-source intelligence and mapping an organization's external attack surface. It functions as a security information gathering framework that automates the collection of publicly available data to assist in reconnaissance and threat analysis. The tool utilizes a plugin-based architecture to execute isolated queries against various search engines and public databases. It employs asynchronous task execution to run multiple discovery operations in parallel, while a centralized pipeline aggregates and deduplicates findings from these
RustScan is a high-speed TCP network scanner written in Rust, designed for security reconnaissance and network mapping. It functions as an automated port discovery engine that identifies open ports on remote hosts using IPv6 addresses, CIDR ranges, or bulk input files. The tool is built for rapid surface area discovery, utilizing parallel port processing and OS-aware performance optimizations to identify active services. It allows for scan precision tuning through adjustable connection timeout thresholds and concurrent request controls to balance speed and accuracy. The system integrates wit
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
Nettacker is an automated penetration testing framework designed to orchestrate reconnaissance, port scanning, and vulnerability detection. It functions as a network reconnaissance tool and vulnerability scanner that identifies open ports, fingerprints services, and checks systems against databases of known security flaws. The framework distinguishes itself by combining a web application crawler for discovering hidden paths via fuzzing with a vulnerability management system that persists scan results in a database to track historical assessments. It also includes specialized capabilities for
Subfinder is a passive subdomain enumeration tool and DNS asset discovery utility designed for mapping the external attack surface of a domain. It functions as a passive reconnaissance framework that identifies subdomains by querying curated third-party data sources and APIs without interacting directly with the target infrastructure. The tool utilizes a modular provider interface to integrate various passive sources and employs concurrent request orchestration to manage simultaneous network queries. It includes wildcard DNS filtering to identify and remove catch-all records, ensuring the res
Gowitness is a system for rendering web interfaces at scale to capture visual snapshots, HTTP metadata, and network scan results. It functions as a headless browser screenshot tool and a web surface mapper used to identify and visually document the attack surface of network ranges and URL lists. The tool includes a screenshot gallery server that provides a web-based interface for browsing, filtering, and managing a database of captures. It specifically serves as an Nmap target visualizer, parsing network scan results to automatically capture screenshots of discovered web services. Capabiliti
Rengine is an automated reconnaissance framework and vulnerability management platform designed for attack surface monitoring. It functions as a centralized hub for discovering subdomains and open ports, gathering open-source intelligence, and tracking security flaws across target networks. The system integrates large language models to analyze reconnaissance data and generate vulnerability descriptions and insights. It distinguishes itself through a plugin-based tool integration that wraps external security scanning binaries and a target mapping system that tracks changes to assets over time
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
Maskphish is a comprehensive security toolkit that integrates capabilities for digital forensics, network vulnerability scanning, open-source intelligence, penetration testing, and social engineering. It functions as a multi-purpose framework for automating reconnaissance and executing security audits across diverse network environments. The project features a specialized phishing and social engineering toolkit used for cloning websites, masking URLs, and deploying deceptive pages to capture user credentials. It also includes a remote access Trojan builder for generating platform-specific exe
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
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
Subfinder is a passive subdomain enumeration tool and DNS discovery utility designed to identify valid subdomains and hostnames associated with a specific organization or domain. It functions as a passive reconnaissance tool, gathering information about target domains by querying online databases without sending network traffic to the target infrastructure. The tool utilizes a pluggable provider architecture to separate discovery logic into independent modules, allowing for the integration of multiple passive-source APIs. It employs a concurrent-worker request model to execute network request
Nuclei is a modular security scanning framework designed for automated vulnerability detection and infrastructure reconnaissance. It functions as a template-driven engine that executes security checks across diverse network protocols, allowing users to define custom detection logic to identify vulnerabilities, misconfigurations, and exposed assets. The platform distinguishes itself through its highly extensible architecture, which supports distributed scanning, headless browser automation for dynamic web content, and out-of-band interaction monitoring to detect blind vulnerabilities. It integ
Gobuster is a command-line security utility designed for brute-force discovery of hidden infrastructure and content. It operates by systematically testing wordlists against target network services to identify files, directories, subdomains, and cloud storage buckets. The tool utilizes a concurrent worker pool to execute these requests in parallel, ensuring efficient scanning across various network environments. The project distinguishes itself through a modular plugin architecture that supports multiple discovery modes, including HTTP, DNS, and TFTP. This design allows for protocol-agnostic r
Fscan is an automated penetration testing tool designed for internal network reconnaissance and vulnerability assessment. It functions as a comprehensive security framework that maps network infrastructure, identifies active hosts and services, and detects security weaknesses across internal environments. The tool distinguishes itself through a modular plugin architecture that allows for extensible security checks and a stateful asset tracking system that maintains an in-memory registry of discovered infrastructure. It incorporates a dedicated credential brute-force engine for testing passwor
This project is a comprehensive command-line reference and toolkit designed for Linux system administration and network security assessment. It provides a collection of technical snippets and operational guides focused on managing remote environments, orchestrating shell sessions, and executing administrative tasks through native terminal utilities. The repository distinguishes itself by offering specialized techniques for stealthy operations and infrastructure manipulation. It covers methods for establishing encrypted tunnels to bypass firewalls, obfuscating process identities and command hi
Aquatone is a web screenshot reconnaissance tool that captures full-page screenshots of web services discovered during network reconnaissance and groups them by visual similarity. It scans a list of hosts or domains for HTTP and HTTPS services on common and custom ports to find responsive web endpoints, then takes full-page screenshots of those pages for quick review. The tool accepts piped input from other tools and extracts URLs, domains, and IP addresses using regex pattern matching, making it pipeline-friendly for integration into existing workflows. It can also read XML output from Nmap
AttackSurfaceMapper (ASM) is a reconnaissance tool that uses a mixture of open source intelligence and active techniques to expand the attack surface of your target. You feed in a mixture of one or more domains, subdomains and IP addresses and it uses numerous techniques to find more targets. It…
Find domains and subdomains related to a given domain
Web Inventory tool, takes screenshots of webpages using Pyppeteer (headless Chrome/Chromium) and provides some extra bells & whistles to make life easier.
Generates permutations, alterations and mutations of subdomains and then resolves them