https://github.com/owasp-amass/amass

In-depth attack surface mapping and asset discovery
https://github.com/owasp-amass/amass

attack-surfaces dns enumeration go golang information-gathering maltego network-security osint osint-reconnaissance owasp recon subdomain

Last synced: 2 days ago
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In-depth attack surface mapping and asset discovery

• Host: GitHub
• URL: https://github.com/owasp-amass/amass
• Owner: owasp-amass
• License: other
• Created: 2018-07-10T16:05:08.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2025-07-21T06:07:10.000Z (5 months ago)
• Last Synced: 2025-08-01T00:25:58.759Z (5 months ago)
• Topics: attack-surfaces, dns, enumeration, go, golang, information-gathering, maltego, network-security, osint, osint-reconnaissance, owasp, recon, subdomain
• Language: Go
• Homepage: https://owasp.org/www-project-amass/
• Size: 366 MB
• Stars: 13,309
• Watchers: 224
• Forks: 2,015
• Open Issues: 207
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

          
# [![OWASP Logo](https://raw.githubusercontent.com/owasp-amass/docs/master/images/owasp_logo.png) OWASP Amass Project](https://owasp.org/www-project-amass/)

[![OWASP Flagship](https://img.shields.io/badge/owasp-flagship%20project-48A646.svg)](https://owasp.org/projects/#sec-flagships)

[![GitHub Release](https://img.shields.io/github/release/owasp-amass/amass)](https://github.com/owasp-amass/amass/releases/latest)

[![Go Report](https://goreportcard.com/badge/github.com/owasp-amass/amass)](https://goreportcard.com/report/github.com/owasp-amass/amass)

[![CodeFactor](https://www.codefactor.io/repository/github/owasp-amass/amass/badge)](https://www.codefactor.io/repository/github/owasp-amass/amass)

[![Follow on Twitter](https://img.shields.io/twitter/follow/owaspamass.svg?logo=twitter)](https://twitter.com/owaspamass)

[![Chat on Discord](https://img.shields.io/discord/433729817918308352.svg?logo=discord)](https://discord.gg/ANTyEDUXt5)

The OWASP Amass Project performs network mapping of attack surfaces and external asset discovery using open source information gathering and active reconnaissance techniques.

## Installation [![Go Version](https://img.shields.io/github/go-mod/go-version/owasp-amass/amass)](https://golang.org/dl/) [![Docker Image](https://img.shields.io/docker/pulls/owaspamass/amass.svg)](https://hub.docker.com/r/owaspamass/amass) [![GitHub Downloads](https://img.shields.io/github/downloads/owasp-amass/amass/latest/total.svg)](https://github.com/owasp-amass/amass/releases/latest)

> You can find additional installation instructions and documentation in the [Amass Docs](https://owasp-amass.github.io/docs) repo.

## Corporate Supporters

[![WhoisXML API Logo](https://raw.githubusercontent.com/owasp-amass/docs/master/images/supporters/whoisxmlapi_logo.png)](https://www.whoisxmlapi.com/)

## Contributing [![Contribute Yes](https://img.shields.io/badge/contribute-yes-brightgreen.svg)](./CONTRIBUTING.md) [![Chat on Discord](https://img.shields.io/discord/433729817918308352.svg?logo=discord)](https://discord.gg/ANTyEDUXt5)

We are always happy to get new contributors on board! Please check [CONTRIBUTING.md](CONTRIBUTING.md) to learn how to

contribute to our codebase, and join our [Discord Server](https://discord.gg/ANTyEDUXt5) to discuss current project goals.

## Troubleshooting ![GitHub Test Status](https://github.com/owasp-amass/amass/workflows/tests/badge.svg) [![codecov](https://codecov.io/gh/owasp-amass/amass/branch/master/graph/badge.svg?token=zoPKxvLT1n)](https://codecov.io/gh/owasp-amass/amass) [![Chat on Discord](https://img.shields.io/discord/433729817918308352.svg?logo=discord)](https://discord.gg/ANTyEDUXt5)

If you need help with installation and/or usage of the tool, please join our [Discord server](https://discord.gg/ANTyEDUXt5) where community members can best help you.

:stop_sign:   **Please avoid opening GitHub issues for support requests or questions!**

## Licensing [![License](https://img.shields.io/badge/license-apache%202-blue)](https://www.apache.org/licenses/LICENSE-2.0)

This program is free software: you can redistribute it and/or modify it under the terms of the [Apache license](LICENSE). OWASP Amass and any contributions are Copyright © by Jeff Foley 2017-2025. Some subcomponents have separate licenses.

![Network graph](https://raw.githubusercontent.com/owasp-amass/docs/master/images/network_06092018.png "Amass Network Mapping")