rfc.fyi

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1. 
   URL Shorteners Search

   URL Shorteners Search, hosted at shorteners.grayhatwarfare.com, is a search tool for indexed shortened URLs. It indexes 1.1 billion URLs from 3.6 billion domains, with updates as recent as 06 November 2025. The service provides a public API for searching, fetching, filtering, and sorting shortener URLs and domains, with free registered and premium user tiers. A scrolling API for bulk result fetching is available to Enterprise package users.

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2. 
   Intelligence X

   Intelligence X is a provider of free open source intelligence (OSINT) and forensic tools for investigative use. The platform offers a suite of tools for searching third-party sites, performing social media intelligence on Facebook, Twitter, LinkedIn, Telegram and YouTube, plus utilities for validating email addresses, looking up domains, IPs, Bitcoin addresses, images and other data types.

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3. 
   Is it big?

   Is it big? is a website that lists brands affiliated with major large corporations. Users can search for specific brands or navigate through available corporate groups, with data sourced from scraping brand websites. All data is open source and available on GitHub.

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   VHSearch

   VHSearch is a search tool built for searching content hosted on the Neocities platform. Created by Coyote Reyne, it includes features such as a StartHere directory, About page, contact information, and an updates and news section for users.

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5. 
   Search My Site

   Search My Site is an independent search engine focused on personal websites, digital gardens and the small web. It also offers a website search tool that adds a search box to a site with one line of code. The platform is ad-free, privacy-first and open source, with a free Basic listing, a one-month free trial, and a Full listing priced at £12/year.

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6. 
   SimilarSites

   SimilarSites is a Chrome Extension that enables people to discover similar and related sites. It enables viewing of monthly visitor, has more than 70K people, and is powered by SimilarWeb SimilarTech. It has Site Removal Request.

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