30 open-source projects similar to projectdiscovery/naabu, 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.
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
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
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
NETworkManager is a comprehensive suite of network administration tools designed for the deployment, monitoring, and diagnostic management of enterprise networks. It provides a centralized interface for subnet management, IP address configuration, and wireless network analysis. The project distinguishes itself by integrating a multi-protocol remote administration client that supports SSH, RDP, VNC, Telnet, and PowerShell sessions within a unified tabbed interface. It further differentiates its capabilities through hardware-level discovery using LLDP and CDP frames, alongside the ability to en
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
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
Ethical-Hacking-Labs is a comprehensive cybersecurity training curriculum and lab suite designed for learning penetration testing, network analysis, and offensive security techniques. It provides a structured environment for practicing the full attack lifecycle, from initial reconnaissance and scanning to exploitation and post-compromise analysis. The project provides instructional materials and guided exercises that cover specific technical domains, including open source intelligence research and network security courseware. It includes a practical workbook for identifying system vulnerabili
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
Amass is a network attack surface mapper and reconnaissance framework designed to discover and map the external, internet-facing infrastructure of a target organization. It functions as an open source intelligence tool that identifies public network boundaries and locates hidden or forgotten subdomains to define an organization's total reachable footprint. The project utilizes passive-source data aggregation from external APIs and public databases alongside active DNS brute-forcing and recursive subdomain expansion. It employs a graph-based asset mapping system to visualize the relationships
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
Sn1per is a vulnerability management platform and penetration testing orchestrator designed to automate reconnaissance, vulnerability scanning, and exploit verification. It functions as a dockerized security toolkit that coordinates multiple tools into a unified automated pipeline to identify security flaws across network and web assets. The platform features an attack surface manager for discovering internet-facing assets through OSINT, DNS enumeration, and certificate transparency. It distinguishes itself with an AI-powered security analyzer that uses large language models to summarize scan
kscan is a network security scanner and service fingerprinter used to discover active hosts and open ports. It functions as a network protocol analyzer and internal network mapper to identify reachable gateways and analyze the network surface area of target environments. The tool integrates external asset discovery by retrieving target hosts through external intelligence services and verifying their availability. It also operates as a credential brute force tool, testing authentication strength across multiple protocols using automated username and password dictionaries. The project covers n
Osmedeus is a security workflow orchestration engine that coordinates AI agents, shell commands, and scanning tools through declarative YAML pipelines. It functions as a distributed security scanner, a declarative workflow automator, and an AI agent framework for security, enabling automated multi-step security analysis with conditional branching, parallel execution, and distributed workers. The engine distinguishes itself through a hybrid runner model that executes workflow steps on the local host, inside Docker containers, or over SSH to remote machines, selected per step or module. It supp
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
Knockpy is a DNS subdomain scanner and passive reconnaissance tool designed to discover subdomains and gather network intelligence. It functions as a DNS enumeration framework that combines active discovery methods with the ability to query external security services for passive domain data. The tool identifies targets through a combination of wordlist-based brute forcing, DNS zone transfers, and the aggregation of data from external security APIs. To ensure accuracy, it includes wildcard DNS detection to filter out false positives during the enumeration process. Beyond discovery, the system
Findomain is a subdomain discovery tool and DNS resolver used for mapping an organization's external attack surface. It functions as a DNS infrastructure analyzer that searches for registered subdomains associated with a root domain to uncover undocumented infrastructure and services. The project includes an attack surface monitor that tracks changes to subdomains over time, using differential state monitoring to identify newly created or deleted assets. It provides real-time alerting via webhooks when changes in the monitored domain surface are detected. The system performs high-speed DNS r
RustScan is a high-speed network reconnaissance tool designed for automated port discovery and service enumeration. It functions as an automated vulnerability scanner that identifies open ports and active services across network environments, providing a foundation for mapping attack surfaces and gathering intelligence on target systems. The tool distinguishes itself through its ability to dynamically adjust scanning parameters and concurrency in real-time based on system feedback, ensuring efficient performance while preventing network congestion. It features an extensible architecture that
This project is a Go DNS library used for implementing DNS clients and servers. It provides a toolkit for packet exchange, record parsing, and the development of custom nameservers. The library includes a DNS server framework and a zone manager for parsing standard zone files and synchronizing data via zone transfers. It features a dedicated DNSSEC implementation library for generating cryptographic keys and validating signatures, as well as a TLS transport for encrypted connections between clients and servers. The system covers a broad range of capabilities including DNS resolver functional
RealiTLScanner is a TLS configuration scanner and network security auditor designed to identify security settings across IP addresses and domains. It functions as a target discovery tool that analyzes TLS configurations to find compatible endpoints and evaluate server security postures. The project distinguishes itself as a geolocation-enhanced network scanner, appending geographic location data and country codes to discovered security configurations using a local location database. This allows for the geographic mapping of servers by combining TLS scan results with GeoIP data. The tool supp
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
Netshoot is a Docker network troubleshooting toolkit and container image bundled with specialized utilities for DNS resolution, performance benchmarking, and TCP/IP packet inspection. It serves as a portable set of tools designed for diagnosing connectivity and routing issues within Docker and Kubernetes environments. The project is distributed as a tool-aggregated container image that can be deployed as a debugging sidecar or an ephemeral runtime. It supports namespace-joined execution, allowing the toolkit to attach to the network namespace of another process to inspect traffic and diagnose
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
ZMap is a fast single packet network scanner designed for Internet-wide network surveys.
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
IntelOwl is a threat intelligence platform and security orchestration engine designed to aggregate, analyze, and enrich security observables. It functions as a security incident investigation tool and a threat intelligence aggregator, collecting data on files, domains, and IP addresses from diverse internal and external sources. The system differentiates itself through playbook-based workflow automation, allowing users to define reusable sequences of analysis tasks that trigger subsequent jobs based on prior outputs. It unifies disparate security data into a common schema and utilizes protoco
SSLyze is an SSL/TLS security scanner and network encryption analyzer designed to identify vulnerabilities and misconfigurations in encryption settings. It functions as both a standalone tool for analyzing server certificates and cipher suites and a programmable Python security library for embedding automated scanning logic into larger applications. The tool distinguishes itself by supporting encryption analysis for both HTTP and non-HTTP network services, including mail, directory, and database protocols. It includes a security compliance validator that compares server configurations against
Kube-hunter is a security scanner and vulnerability hunter for Kubernetes clusters. It operates as a cloud-native penetration tool designed to identify security weaknesses, infrastructure misconfigurations, and exploitable gaps by simulating attacker techniques. The tool distinguishes itself through a dual-mode scanning engine that executes both remote external probes and internal network scans. It features identity-based impersonation, allowing it to use service account tokens and pod identities to simulate security access from specific cluster roles and determine the potential blast radius
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
Security-101 is a vendor-agnostic, foundational cybersecurity learning curriculum organized into modular, framework-aligned modules. It is designed to build core knowledge across multiple security domains without tying content to specific products or platforms, making it suitable for both beginners and professionals seeking a structured introduction to the field. The curriculum is built around established security frameworks, including the MITRE ATT&CK framework for standardized threat analysis and the NIST Cybersecurity Framework for incident response workflows. It covers a broad range of do
Snyk is an application security testing platform designed to identify and remediate vulnerabilities across source code, open-source dependencies, container images, and infrastructure-as-code configurations. It functions as a comprehensive security workflow automation tool, utilizing a static analysis engine and dependency graph mapping to detect security flaws and license compliance issues throughout the software development lifecycle. The platform distinguishes itself through agentic workflow orchestration and an automated remediation pipeline that generates and submits pull requests to patc