Directory of External Tools and Resources
We've hand-picked the most valuable and useful domain tools. And have compiled a list of everything you could ever need when it comes to domain research, security, registration and management.
Domain Tools
Free tools for finding, comparing and valuing domain names
Domcomp
Domain registrar comparison tool
Humbleworth

Free domain appraisal tool, to find approximate value of a domain
Name Boy

Discover available domain name from search term
Expired Domains
List of all domains that have expired today
Web Data Tools
Free tools for discovering data about any site. Useful for analyzing, debugging, optimizing securing your domains and websites.
Web Check

X-ray vision for any website, view and export all available website data in one place
MX Toolbox
Check DNS records, blacklist status, and more
Zone Master

DNS diagnostics tool
Hudson Rock

Identify Infostealer infection data related to domains and emails
SSL Labs Test

Analyzes the SSL configuration of a server and grades it
Virus Total

Checks a URL against multiple antivirus engines
Shodan

Search engine for Internet-connected devices
Archive

View previous versions of a site via the Internet Archive
URLScan

Scans a URL and provides information about the page
Sucuri SiteCheck

Checks a URL against blacklists and known threats
Domain Tools

Run a WhoIs lookup on a domain
NS Lookup

View DNS records for a domain
DNS Checker

Check global DNS propagation across multiple servers
Censys

Lookup hosts associated with a domain
Page Speed Insights

Checks the performance, accessibility and SEO of a page on mobile + desktop
Built With

View the tech stack of a website
DNS Dumpster

DNS recon tool, to map out a domain from it's DNS records
BGP Tools

View realtime BGP data for any ASN, Prefix or DNS
Similar Web

View approx traffic and engagement stats for a website
Blacklist Checker

Check if a domain, IP or email is present on the top blacklists
Cloudflare Radar

View traffic source locations for a domain through Cloudflare
Mozilla HTTP Observatory

Assesses website security posture by analyzing various security headers and practices
AbuseIPDB
Checks a website against Zscaler's dynamic risk scoring engine
IBM X-Force Exchange

View shared human and machine generated threat intelligence
URLVoid
Checks a website across 30+ blocklist engines and website reputation services
URLhaus
Checks if the site is in URLhaus's malware URL exchange
Reputable Registrars
The most important decision you can make when it comes to domain management is choosing the right registrar.
What to look for in a domain registrar
Porkbun
Simple, transparent, affordable registrar
Spaceship

Affordable modern registrar with no lock-ins
Hover

An easy and affordable registrar with good customer support
Namecheap

Well established, but quite expensive registrar with many TLDs + WHOIS privacy included
Cloudflare Registrar
Low pricing, good if you're already using Cloudflare for DDoS protection
Domain Management Platforms
At Domain Locker, we don't lock you in. Managing your domains effectively is important, and we want you to land on the best platform for your needs. We've listed a detailed comparison of alternative domain management tools on our Comparison page. But in short, below are the top domain management tools
Domain MOD

The self-hosted domain management platform with a data warehouse framework
Domain Punch

Desktop tool for managing large domain portfolios
Domain Watchman

Expiration monitor and domain management platform
Domain Locker

The all-in-one domain management platform, for keeping track of your domain portfolio, associated assets, and more
Domain Admin
Lightweight renewal and SSL expiration monitor with notifications
Domain Ant

Notifications and domain tracking (Not yet GA at time of writing)
Momento

Monitors for domain expiration and SSL certificate expiration
SSL Certificate Providers
Let's Encrypt
Industry leading free and automated SSL certs
ZeroSSL

Free SSL 90-day certificates with wildcard support
Cloudflare SSL
Free SSL via Cloudflare's reverse proxy
Open Source Utilities
domain-watch
By @gabe565Get notified of domain changes when they happen
domain-watchdog
By @maelgangloffCollect domain data and track change history
dehydrated
By @dehydrated-io
A client for signing certificates with an ACME server
gitzone
By @dyneGit-based DNS management tool for BIND9
Certbot
By @EFForg
Automatically enable HTTPS on your website with Let's Encrypt
AS93 Apps
If you've enjoyed Domain Locker, you might be interested in checking out some of the other apps I've developed. I'm active on GitHub at @Lissy93, and my full catalog of 50+ apps is available at as93.net.
Web Check

X-ray vision for any website, view and export all available website data in one place
Dashy

A self-hostable server dashboard. Status-checking, widgets, themes, icon packs, UI editor, and more
Who Dat?

Free & open source WHOIS lookup app and API
Digital Defense

The ultimate security checklist, 300+ tips for protecting your data online
Awesome Privacy

A curated list of apps, services and alternatives that respect your privacy
Portainer Templates

A collection of 1-click installable Docker stacks
Adguardian

A CLI network traffic monitor and dashboard for AdGuard Home
Email Comparison

An objective comparison of private and/or secure email services
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