The FOFA alternative with perceptual favicon search
A powerful field:value search across hosts, DNS, WHOIS and certificates - with favicon similarity that goes beyond exact icon hash, English-first and EU-based.
Profundis is a unified internet-intelligence search engine with a powerful field:value query language (wildcards, AND/OR/NOT) across hosts, DNS, WHOIS, TLS certificates and virtual hosts. Like FOFA, it lets you pivot across cyberspace assets, including by favicon.
Profundis’s favicon search uses perceptual similarity (MMH3 + visual similarity) rather than only an exact icon hash, so it surfaces visually similar favicons too. The interface is English-first, the platform is EU-based, and an official MCP server lets AI agents search natively.
Why Profundis
01Favicon perceptual-similarity search (MMH3 + visual similarity) that finds visually similar favicons, not just exact icon-hash matches - Profundis’s signature differentiator.
02A unified internet-intelligence engine - exposed hosts and services, DNS (live + historical/passive), WHOIS (with reverse/registrant lookups), TLS certificates and virtual hosts - all searchable in one place with a field:value syntax (wildcards, AND/OR/NOT).
03An official MCP (Model Context Protocol) server, so AI agents like Claude can call Profundis search as native tools - AI-agent-native distribution.
04Operated by Perspective Analytics SAS, a software company based in France.
05A free tier with an anonymous hosts and DNS preview, plus individual Solo and Professional plans. Teams and Business add shared organization workspaces and credits.
Profundis vs FOFA
| Capability | Profundis | FOFA |
|---|---|---|
| Cyberspace asset / host search | ✓ Core feature | Core feature |
| Field:value query syntax (wildcards, AND/OR/NOT) | ✓ Across all datasets | Core feature |
| Favicon search | ✓ Perceptual similarity | Favicon icon-hash search |
| Unified DNS (live + historical/passive) | ✓ Built in | Supported |
| WHOIS + reverse/registrant lookups | ✓ Built in | Varies by plan |
| TLS certificate search | ✓ Built in | Supported |
| English-first interface | ✓ English-first | Varies |
| Official MCP server for AI agents | ✓ Native tools | Check current documentation |
| Free tier with no-signup host/DNS preview | ✓ No signup to preview | Varies by plan |
| Operator location | ✓ France (EU) | Check current documentation |
Capabilities and access conditions can change. Consult the linked publisher documentation where provided; an unverified feature is not an absent feature. Check the current plans before choosing FOFA.
Frequently asked questions
Is Profundis a free FOFA alternative?
Profundis offers a free tier and an anonymous host/DNS preview with no signup. The full query language, favicon search and API are available with transparent credit-based plans.
How does Profundis favicon search compare to FOFA icon-hash search?
FOFA is widely known for favicon icon-hash search. Profundis offers favicon search too, but uses perceptual similarity (MMH3 + visual similarity), so it surfaces visually similar favicons rather than only exact-hash matches.
Does Profundis support a field-based search syntax?
Yes. Profundis uses a field:value syntax with wildcards and AND/OR/NOT operators across hosts, DNS, WHOIS, certificates and virtual hosts.
Is Profundis available in English and based in the EU?
Yes. Profundis is available in English. Profundis is operated by Perspective Analytics SAS in France. For data handling and retention, consult the privacy policy and organization documentation.
Does Profundis have an API and an MCP server?
Yes. Profundis provides an API and an official MCP server, so AI agents like Claude can call its search as native tools.
Compare with other tools
Comparison based on publicly available information. All trademarks are the property of their respective owners. Profundis is not affiliated with FOFA.