cl0q
Open search engine for domain research and OSINT — 38.5M domains scanned.
About cl0q
cl0q operates an autonomous web search index and domain intelligence platform designed for infrastructure mapping and security investigations. Unlike traditional search providers that repackage upstream syndication APIs, the platform maintains proprietary web crawler fleets that catalog millions of active apex domains and hosts. Developers and network engineers can inspect domain properties using low-level network parameters, including Autonomous System Numbers (ASN), hosting organizations, CNAME records, IP subnets, and cryptographic favicon hashes.
The system facilitates infrastructure pivoting by mapping relationships across shared web assets. By generating SHA-256 and MurmurHash3 signatures from site favicon files, analysts can pinpoint unlinked web portals, testing environments, and command infrastructure sharing identical branding tokens. The search engine processes queries purely in runtime memory without maintaining persistent user logs, search histories, or client tracking beacons, providing a discrete reconnaissance environment for threat researchers and penetration testers.
Developer integration is supported via a REST API that supplies structured JSON outputs for domain enrichment, subdomain enumeration, and infrastructure lookups. A free development tier permits 1,000 daily requests without requiring credit card registration, while tiered monthly subscriptions unlock higher throughput limits and real-time feeds of newly discovered domains. Community members can also participate in the crawling network by deploying containerized crawler nodes through public repositories on Codeberg.
Works with
Features
- Own crawler and index — 38.5M domains scanned, 24.8M pages indexed
- Free API tier with a real REST API
- No tracking, no ads, no search logs
- Memory-resident search processing that operates without user logging or persistent query tracking
- Public REST API offering domain enrichment and subdomain enumeration with a free tier option
Use Cases
- Domain research and reconnaissance for OSINT analysts
- Asset discovery and threat intel via the search API
- Search the web without tracking or ads
- Conducting web searches without search term profiling, advertising scripts, or request telemetry
- Running distributed crawler nodes via Docker containers to contribute crawl capacity to the network
Verified facts
Checked by the StackLedge team.
FAQ
What is cl0q?
cl0q is a free, independent search engine that uses its own crawler and index to provide search results without logging user queries.
How does cl0q ensure privacy?
cl0q does not store search queries, does not require accounts for basic use, and processes queries in memory without writing them to a database.
What does going open source mean for users?
Going open source means users will be able to review the code, run their own instances of the search engine, and contribute to its development.
What extra capabilities are provided on paid subscription tiers?
Paid plans start at $10 per month and increase throughput limits up to 2,400 requests per minute and 400,000 requests per day. Higher tiers also add access to MurmurHash3 calculation algorithms and a real-time feed of newly detected domains.
Can developers host their own cl0q crawler nodes?
Yes, the crawler node application is distributed publicly on Codeberg. Individuals can deploy the containerized crawler using Docker to contribute crawling throughput to the wider index network.
Similar tools
More in Developer Tools
Orisift
Orisift is a developer API for phone, email, IP, and domain validation with evidence-backed risk signals and one shared credit balance
Egmatic
Egmatic is a coming-soon no-code editor and engine for creating and publishing 2D games across five platforms
Kitset SEO Launch Kit
Kitset SEO Launch Kit creates SEO titles, meta descriptions, SERP previews, robots rules, sitemap entries, and starter schema markup
Discussion (0)
Log in to join the discussion.
No comments yet.