scanpatch

Amass

In-depth Attack Surface Mapping and Asset Discovery

asn

ASN / RPKI validity / BGP stats / IPv4v6 / Prefix / URL / ASPath / Organization / IP reputation and geolocation lookup tool / Traceroute server

mitaka

A browser extension for OSINT search

serverless-dns

The RethinkDNS resolver that deploys to Cloudflare Workers, Deno Deploy, Fastly, and Fly.io

theHarvester

E-mails, subdomains and names Harvester - OSINT

fasthttp

Fast HTTP package for Go. Tuned for high performance. Zero memory allocations in hot paths. Up to 10x faster than net/http

go-pcre

Perl Compatible Regular Expression shim for Go

gocrawler

gohasher

markdownlint

Markdown lint tool

OSINT-Framework

OSINT Framework

scilla

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

sputnik

Open Source Intelligence Browser Extension

spyse.py

Python API wrapper and command-line client for the tools hosted on spyse.com.

subfinder

Subfinder is a subdomain discovery tool that discovers valid subdomains for websites. Designed as a passive framework to be useful for bug bounties and safe for penetration testing.

wappalyzer

Identify technology on websites.