1
Also covers bug bounty, dns lookup, and domain ip dns · same kind of open-source project
metabigor collects open source intelligence about internet assets without requiring API keys for its workflow.
Alternatives
The Best SubDomainizer Alternatives in 2026
24 alternatives1 free · 4 open source
Looking for something like SubDomainizer? 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 4 are open source.
About SubDomainizergithub.com/nsonaniya2010/SubDomainizer
VisitSubDomainizer searches web pages, folders, and JavaScript files for subdomains and related information.
Top picks at a glance
First suggestionmetabigormetabigor collects open source intelligence about internet…Free or freemium optionCloudflare DNSCloudflare DNS provides public DNS resolution and…Another optionIWantMyNameIWantMyName registers domain names across more than 500…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | metabigor | — | Yes | — |
| 2 | IWantMyName | — | Not stated | Web |
| 3 | Merklemap | — | Not stated | Web |
| 4 | SD Finder | — | Not stated | Web |
| 5 | digger.tools | — | Not stated | Web |
| 6 | Whois | — | Not stated | — |
| 7 | CloudFlare DDNS Updater | — | Yes | Linux, macOS |
| 8 | Dnsecure | — | Yes | iOS, macOS |
| 9 | wtfis | — | Yes | — |
| 10 | Google Transparency Report | — | Not stated | Web |
All SubDomainizer alternatives
2
IWantMyName
iwantmyname.comAlso covers dns lookup and domain ip dns
IWantMyName registers domain names across more than 500 extensions and offers related plugins.
3
Merklemap
merklemap.comAlso covers dns lookup and domain ip dns
Find subdomains and certificates linked to a website with Merklemap search and enumeration tools.
4
SD Finder
subdomainfinder.c99.nlAlso covers dns lookup and domain ip dns
Scan a domain for subdomains with Subdomain Finder, which offers private scans that are not logged or indexed.
5
digger.tools
digger.toolsAlso covers dns lookup and domain ip dns
Domain Digger looks up DNS, WHOIS, IP data, SSL history, and subdomains for a domain.
6
Whois
github.com/b1s4/whoisAlso covers dns lookup and domain ip dns · same kind of open-source project
This Whois command-line tool looks up DNS and RDAP records for a domain.
7
Also covers dns lookup and domain ip dns · same kind of open-source project
Cloudflare DDNS Updater updates dynamic DNS records so users can reach a home network through a custom domain.
8
Also covers dns lookup and domain ip dns · same kind of open-source project
Configure DNS over HTTPS or DNS over TLS on iOS, iPadOS, and macOS with DNSecure.
9
Also covers dns lookup and domain ip dns · same kind of open-source project
wtfis gathers passive hostname, domain, and IP information from public sources.
10
Also covers dns lookup and domain ip dns
Google Transparency Report publishes data about requests and activity affecting Google services.
11
Also covers dns lookup and domain ip dns · free
Cloudflare DNS provides public DNS resolution and authoritative DNS services.
12
Netlas:
netlas.ioAlso covers dns lookup and domain ip dns
Netlas provides search tools for internet infrastructure, including DNS, WHOIS, and IP lookups.
13
Domainr
domainr.comAlso covers dns lookup and domain ip dns
Domainr searches domain names and provides an API covering top-level domains.
14
InstantDomain
instantdomainsearch.comAlso covers dns lookup and domain ip dns
Search domain names and check availability across more than 800 extensions with InstantDomain.
15
Website search tool
aware-online.com/en/osint-tools/website-search…Also covers dns lookup and domain ip dns
Website search tool provides OSINT utilities for investigating a website and its associated infrastructure.
16
DomainTyper
domaintyper.comAlso covers dns lookup and domain ip dns
DomainTyper searches for available domain names across extensions as users type.
17
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.
18
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.
19
DNSecure
apps.apple.com/en/app/dnsecure/id1533413232Also covers dns lookup and domain ip dns
Manage encrypted DNS configurations on iOS with DNSecure, an App Store utility.
20
YogaDNS
yogadns.comAlso covers dns lookup and domain ip dns
Intercept system DNS requests on Windows and configure resolvers with YogaDNS.
21
Also covers dns lookup and domain ip dns
Whoxy provides a WHOIS API for looking up domain registration records from a database of historical records.
22
Website Information
one-plus.github.io/WebsiteInformationAlso covers dns lookup and domain ip dns
OSINT Toolkit page listing website, IP, domain, email and MAC lookup tools; some tools need a known identifier to run.
23
Wappalyzer
wappalyzer.com/lookupAlso covers dns lookup and domain ip dns
Wappalyzer identifies technologies used to build websites, showing frameworks, analytics, and hosting components.
24
DNS Providers
adguard-dns.io/kb/general/dns-providersAlso covers dns lookup and domain ip dns
Browse trusted DNS providers listed in AdGuard’s knowledge base for use with its products.
No alternatives match this filter.
Alternatives to similar tools
Google Transparency Report24 alternativesCloudflare DNS24 alternativesDNSecure24 alternativesDNS Jumper24 alternativesNetlas:24 alternativesDNS Providers24 alternatives
What is the best alternative to SubDomainizer?
Based on features, tags and platforms, the closest alternatives to SubDomainizer are metabigor, IWantMyName, and Merklemap.
Is there a free alternative to SubDomainizer?
Yes. Cloudflare DNS is free or offer a free plan.
Are there open-source alternatives to SubDomainizer?
Yes: metabigor, CloudFlare DDNS Updater, Dnsecure, and wtfis.
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