1
SD Finder
subdomainfinder.c99.nlAlso covers dns lookup and domain ip dns · same kind of online tool
Scan a domain for subdomains with Subdomain Finder, which offers private scans that are not logged or indexed.
Alternatives
The Best Merklemap Alternatives in 2026
24 alternatives1 free · 1 open source
Looking for something like Merklemap? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 1 are open source.
Find subdomains and certificates linked to a website with Merklemap search and enumeration tools.
Top picks at a glance
First suggestionSD FinderScan a domain for subdomains with Subdomain Finder, which…Free or freemium optionCloudflare DNSCloudflare DNS provides public DNS resolution and…Open source optionSubDomainizerSubDomainizer searches web pages, folders, and JavaScript…Another optiondigger.toolsDomain Digger looks up DNS, WHOIS, IP data, SSL history…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | SD Finder | — | Not stated | Web |
| 2 | digger.tools | — | Not stated | Web |
| 3 | Cloudflare DNS | Free | Not stated | Web |
| 4 | SubDomainizer | — | Yes | — |
| 5 | Netlas: | — | Not stated | Web, Windows |
| 6 | Domainr | — | Not stated | Web |
| 7 | Website search tool | — | Not stated | Web |
| 8 | DomainTyper | — | Not stated | Android, iOS, Web |
| 9 | Whoxy | Paid | Not stated | Web |
| 10 | Website Information | — | Not stated | Web |
All Merklemap alternatives
2
digger.tools
digger.toolsAlso covers dns lookup and domain ip dns · same kind of online tool
Domain Digger looks up DNS, WHOIS, IP data, SSL history, and subdomains for a domain.
3
Also covers dns lookup and domain ip dns · same kind of online tool · free
Cloudflare DNS provides public DNS resolution and authoritative DNS services.
4
Also covers dns lookup and domain ip dns · open source
SubDomainizer searches web pages, folders, and JavaScript files for subdomains and related information.
5
Netlas:
netlas.ioAlso covers dns lookup and domain ip dns · same kind of online tool
Netlas provides search tools for internet infrastructure, including DNS, WHOIS, and IP lookups.
6
Domainr
domainr.comAlso covers dns lookup and domain ip dns · same kind of online tool
Domainr searches domain names and provides an API covering top-level domains.
7
Website search tool
aware-online.com/en/osint-tools/website-search…Also covers dns lookup and domain ip dns · same kind of online tool
Website search tool provides OSINT utilities for investigating a website and its associated infrastructure.
8
DomainTyper
domaintyper.comAlso covers dns lookup and domain ip dns · same kind of online tool
DomainTyper searches for available domain names across extensions as users type.
9
Also covers dns lookup and domain ip dns · same kind of online tool
Whoxy provides a WHOIS API for looking up domain registration records from a database of historical records.
10
Website Information
one-plus.github.io/WebsiteInformationAlso covers dns lookup and domain ip dns · same kind of online tool
OSINT Toolkit page listing website, IP, domain, email and MAC lookup tools; some tools need a known identifier to run.
11
Wappalyzer
wappalyzer.com/lookupAlso covers dns lookup and domain ip dns · same kind of online tool
Wappalyzer identifies technologies used to build websites, showing frameworks, analytics, and hosting components.
12
IWantMyName
iwantmyname.comAlso covers dns lookup and domain ip dns · same kind of online tool
IWantMyName registers domain names across more than 500 extensions and offers related plugins.
13
RDAP
client.rdap.orgAlso covers dns lookup and domain ip dns · same kind of online tool
Look up domain, IP, autonomous system, and entity records with RDAP.org RDAP-based lookup tool.
14
dnslytics
dnslytics.comAlso covers dns lookup and domain ip dns · same kind of online tool
DNSlytics provides reverse IP, NS, MX, WHOIS, and domain lookup tools.
15
Free online network tools
centralops.net/coAlso covers dns lookup and domain ip dns · same kind of online tool
Central Ops offers network diagnostic tools including traceroute, nslookup, and WHOIS lookups.
16
Also covers dns lookup and domain ip dns · same kind of online tool
Check domain registration details and availability with Whois.com, which also sells domain names and hosting.
17
Whois Search
webwhois.verisign.com/webwhois-ui/index.jsp?la…Also covers dns lookup and domain ip dns · same kind of online tool
Verisign Whois Search provides information about domain name registrations, including .com and .net records.
18
GreyNoise Intelligence
greynoise.io/vizAlso covers dns lookup and domain ip dns · same kind of online tool
GreyNoise Intelligence analyzes untargeted internet scanning and provides context about IP addresses seen probing networks.
19
Pyfunceble
pyfunceble.github.ioAlso covers dns lookup and domain ip dns · same kind of online tool
PyFunceble checks whether domains, IP addresses, and URLs are available or syntactically valid.
20
whois
whois.b1s4.xyzAlso covers dns lookup and domain ip dns · same kind of online tool
Look up DNS records and RDAP domain information with whois_, which supports common record types and network entities.
21
Also covers dns lookup and domain ip dns
Google Transparency Report publishes data about requests and activity affecting Google services.
22
InstantDomain
instantdomainsearch.comAlso covers dns lookup and domain ip dns
Search domain names and check availability across more than 800 extensions with InstantDomain.
23
IP search - Network Entity Reputation Database
nerd.cesnet.cz/nerd/ipsAlso covers dns lookup and domain ip dns
Network Entity Reputation Database lets users search IP details and reputation information through its interface.
24
DNS Jumper
sordum.org/7952/dns-jumper-v2-3Also covers dns lookup and domain ip dns
Change DNS servers on Windows with DNS Jumper, a free portable utility with IPv6 support.
No alternatives match this filter.
Alternatives to similar tools
Google Transparency Report24 alternativesCloudflare DNS24 alternativesDNS Jumper24 alternativesNetlas:24 alternativesWebsite search tool24 alternativesWebsite Information24 alternatives
What is the best alternative to Merklemap?
Based on features, tags and platforms, the closest alternatives to Merklemap are SD Finder, digger.tools, and Cloudflare DNS.
Is there a free alternative to Merklemap?
Yes. Cloudflare DNS is free or offer a free plan.
Are there open-source alternatives to Merklemap?
Yes: SubDomainizer.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative