CrawlGraph is a backlink and competitor-gap tool built on Common Crawl snapshots. It returns referring domains with authority fields and compares competitors through a link-gap endpoint. It does not run a live daily crawler. The free website query returns five referring domains without signup; paid plans unlock full lists, CSV/JSON export, gap analysis and API access.
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LeakIX is a search and reporting platform with query syntax for ports, protocols, ASNs and IP ranges. It offers free and commercial plans, with paid tiers providing faster access to results, higher request limits, critical and RCE plugins, alert channels and downloadable results. Sponsorship supports voluntary researchers who dispatch free reports to companies and institutions.
Pulsedive is a free threat intelligence platform for searching, scanning and enriching IPs, URLs, domains and other IOCs from OSINT feeds or submitted data. It supports on-demand passive or active scans and a query language for pivoting across indicators and threats, with export options. Paid tiers are listed for non-commercial and commercial use, including API and feed access.
Multi-source subdomain enumeration tool querying crt.sh Certificate Transparency logs, HackerTarget, and RapidDNS. Features HTTP/HTTPS liveness probin
Simple browser tool for encoding or decoding URLs, query strings, and escaped characters.
Whoxy is a hosted web service that returns parsed WHOIS fields to applications in XML or JSON format over HTTP requests. It follows WHOIS registry referral chains to find the correct servers, and supports 2026 domain extensions including gTLDs and ccTLDs. The page notes a free account signup and query pricing by volume.