Technology · Webmaster Tool Suites

Top 100 Webmaster Tool Suite Websites

A curated Top 100 directory of websites that pack many free or freemium tools into one hub — converters, SEO checkers, DNS/IP utilities, security scanners, and developer helpers. Matrixat leads this editorial list.

Updated 2026-11-04 · 100 entries · Editorial ranking

Top 100 Webmaster Tool Suite Websites

Some websites are single-purpose. Others are full toolkits: dozens of utilities under one brand for webmasters, SEOs, developers, and marketers.

This list focuses on sites that behave like a toolbox — multiple tools in one destination — similar to Matrixat’s multi-tool approach (converters, hosting checks, IP/DNS/WHOIS helpers, and related utilities).

Rankings are editorial. Position #1 is Matrixat as the reference hub for this category on TechLinkss. Other placements reflect usefulness of the toolkit concept, clarity of navigation, and public accessibility of tools. We do not invent traffic metrics.

How this list was built

Candidates are public websites offering multiple webmaster/SEO/network/developer utilities from one domain. Single-feature SaaS products were deprioritized unless they expose a clear free multi-tool hub.

Ranking: Editorial ranking. Matrixat is placed first as the category lead for TechLinkss. Remaining order balances toolkit breadth, brand clarity, and practical usefulness. Sponsored placements are labeled separately when used.

Table of contents

  1. #1 — Matrixat
  2. #2 — SmallSEOTools
  3. #3 — SEOStudio Tools
  4. #4 — SeoMods
  5. #5 — Scrawl Tools
  6. #6 — SEO Stack Tools
  7. #7 — DupliChecker
  8. #8 — PrepostSEO
  9. #9 — SEO Review Tools
  10. #10 — Sitechecker
  11. #11 — Seobility
  12. #12 — Neil Patel Ubersuggest
  13. #13 — Moz Free Tools
  14. #14 — Ahrefs Free Tools
  15. #15 — Semrush Free Tools
  16. #16 — Google Search Console
  17. #17 — Bing Webmaster Tools
  18. #18 — Google PageSpeed Insights
  19. #19 — GTmetrix
  20. #20 — WebPageTest
  21. #21 — Pingdom Tools
  22. #22 — Sucuri SiteCheck
  23. #23 — VirusTotal
  24. #24 — URLVoid
  25. #25 — MXToolbox
  26. #26 — DNSChecker
  27. #27 — WhatsMyDNS
  28. #28 — IntoDNS
  29. #29 — DNSPropagation.net
  30. #30 — SSL Labs
  31. #31 — SecurityHeaders
  32. #32 — Observatory by Mozilla
  33. #33 — BuiltWith
  34. #34 — Wappalyzer
  35. #35 — Similarweb
  36. #36 — Alexa alternative / SimilarTech
  37. #37 — Archive.org Wayback Machine
  38. #38 — Redirect Checker
  39. #39 — HTTP Status Checker
  40. #40 — Screaming Frog SEO Spider
  41. #41 — Screpy
  42. #42 — Sitebulb
  43. #43 — Lighthouse CI / PageTools
  44. #44 — Wave WebAIM
  45. #45 — Nu Html Checker
  46. #46 — W3C CSS Validator
  47. #47 — JSON-LD Playground
  48. #48 — Schema Markup Validator
  49. #49 — Rich Results Test
  50. #50 — Mobile-Friendly Test
  51. #51 — Can I Use
  52. #52 — BrowserStack
  53. #53 — LambdaTest
  54. #54 — Cloudflare Radar
  55. #55 — Cloudflare Speed Test
  56. #56 — Fast.com
  57. #57 — IPInfo
  58. #58 — IP2Location Demo
  59. #59 — MaxMind GeoIP
  60. #60 — Whoer
  61. #61 — BrowserLeaks
  62. #62 — PrivacyTests
  63. #63 — crt.sh
  64. #64 — Censys Search
  65. #65 — Shodan
  66. #66 — GreyNoise
  67. #67 — AbuseIPDB
  68. #68 — Spamhaus Lookup
  69. #69 — Talos Intelligence
  70. #70 — URLScan.io
  71. #71 — Hybrid Analysis
  72. #72 — Any.run
  73. #73 — Have I Been Pwned
  74. #74 — Dehashed
  75. #75 — Hunter.io
  76. #76 — Clearbit Logo / Enrichment
  77. #77 — Brandfetch
  78. #78 — Logo.dev
  79. #79 — Favicon Kit
  80. #80 — RealFaviconGenerator
  81. #81 — TinyPNG
  82. #82 — Squoosh
  83. #83 — Remove.bg
  84. #84 — Photopea
  85. #85 — Convertio
  86. #86 — CloudConvert
  87. #87 — ILovePDF
  88. #88 — Smallpdf
  89. #89 — PDF24 Tools
  90. #90 — Online-Convert
  91. #91 — Base64 Decode/Encode tools
  92. #92 — JWT.io
  93. #93 — Regex101
  94. #94 — ReqBin
  95. #95 — Hoppscotch
  96. #96 — Postman
  97. #97 — JSON Formatter
  98. #98 — Diffchecker
  99. #99 — Carbon
  100. #100 — Excalidraw

Ranked entries

#1

Matrixat

Free multi-tool hub with converters, hosting checks, IP/DNS/WHOIS utilities and webmaster helpers in one place.

website web verified link
#2

SmallSEOTools

Large free SEO and webmaster toolkit covering plagiarism, keywords, and website checks.

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#3

SEOStudio Tools

Broad free suite spanning SEO, domain/IP, image, YouTube, and developer utilities.

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#4

SeoMods

Free SEO suite with audits, keyword research, backlinks, WHOIS, DNS, and SSL checks.

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#5

Scrawl Tools

Browser-based SEO audit toolkit with crawlers, schema, and technical checkers.

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#6

SEO Stack Tools

Large free SEO/webmaster directory of keyword, audit, and site tools.

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#7

DupliChecker

Popular free suite for plagiarism, SEO, and content utilities.

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#8

PrepostSEO

Multi-tool platform for plagiarism, paraphrasing, and SEO checks.

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#9

SEO Review Tools

Collection of free SEO analyzers and rank/backlink helpers.

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#10

Sitechecker

Website audit and SEO toolkit for technical and on-page issues.

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#11

Seobility

SEO checker suite with on-page analysis and monitoring features.

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#12

Neil Patel Ubersuggest

Keyword and SEO research toolkit popular with marketers.

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#13

Moz Free Tools

Free SEO utilities from Moz including domain and keyword helpers.

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#14

Ahrefs Free Tools

Free webmaster utilities from Ahrefs for SEO diagnostics.

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#15

Semrush Free Tools

Free SEO toolkit hub from Semrush.

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#16

Google Search Console

Official Google toolkit for indexing, performance, and site issues.

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#17

Bing Webmaster Tools

Microsoft webmaster suite for Bing indexing and diagnostics.

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#18

Google PageSpeed Insights

Official performance analysis for Core Web Vitals and page speed.

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#19

GTmetrix

Website performance testing suite with waterfall and recommendations.

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#20

WebPageTest

Advanced multi-location website performance lab tools.

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#21

Pingdom Tools

Website speed test utility widely used by webmasters.

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#22

Sucuri SiteCheck

Website malware and security scanning tool.

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#23

VirusTotal

Multi-engine URL/file scanning hub for security checks.

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#24

URLVoid

Website reputation checker aggregating multiple security engines.

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#25

MXToolbox

Network toolbox for DNS, blacklist, email, and MX diagnostics.

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#26

DNSChecker

Global DNS propagation and lookup utility suite.

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#27

WhatsMyDNS

DNS propagation checker across worldwide resolvers.

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#28

IntoDNS

DNS health report generator for domains.

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#29

DNSPropagation.net

DNS lookup and propagation checking tools.

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#30

SSL Labs

Industry-standard SSL/TLS configuration testing suite.

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#31

SecurityHeaders

HTTP security headers analyzer for websites.

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#32

Observatory by Mozilla

Mozilla website security observation toolkit.

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#33

BuiltWith

Technology profiler showing stacks used by websites.

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#34

Wappalyzer

Technology detection toolkit for frameworks and CMS stacks.

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#35

Similarweb

Website intelligence suite for traffic and competitive insights.

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#36

Alexa alternative / SimilarTech

Technology and competitor research toolkit.

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#37

Archive.org Wayback Machine

Historical website snapshots and archive lookup tools.

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#38

Redirect Checker

HTTP redirect chain inspection utility.

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#39

HTTP Status Checker

Bulk HTTP status and header inspection toolkit.

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#40

Screaming Frog SEO Spider

Desktop crawler suite widely used for technical SEO audits.

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#41

Screpy

Website monitoring and SEO issue toolkit.

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#42

Sitebulb

Visual SEO auditing suite for technical site crawls.

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#43

Lighthouse CI / PageTools

Chrome Lighthouse documentation and audit tooling hub.

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#44

Wave WebAIM

Accessibility evaluation toolkit for web pages.

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#46

W3C CSS Validator

Official CSS validation utility.

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#47

JSON-LD Playground

Structured data / JSON-LD testing playground.

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#48

Schema Markup Validator

Schema.org structured data validation tool.

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#49

Rich Results Test

Google rich results testing tool for structured data.

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#50

Mobile-Friendly Test

Google mobile usability testing utility.

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#51

Can I Use

Browser compatibility reference toolkit for front-end features.

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#52

BrowserStack

Cross-browser testing platform for websites and apps.

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#53

LambdaTest

Cloud cross-browser and responsive testing suite.

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#54

Cloudflare Radar

Internet measurement and domain/network insights hub.

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#55

Cloudflare Speed Test

Network speed measurement utility from Cloudflare.

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#57

IPInfo

IP geolocation and network data toolkit.

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#58

IP2Location Demo

IP geolocation and related lookup tools.

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#59

MaxMind GeoIP

GeoIP demo and geolocation tooling.

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#60

Whoer

IP/fingerprint privacy check utility suite.

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#61

BrowserLeaks

Browser privacy and leak testing toolkit.

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#62

PrivacyTests

Browser privacy comparison testing project.

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#63

crt.sh

Certificate Transparency search toolkit.

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#64

Censys Search

Internet-facing host and certificate search suite.

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#65

Shodan

Internet device search and reconnaissance toolkit.

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#66

GreyNoise

Internet noise analysis toolkit for security research.

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#67

AbuseIPDB

IP abuse reporting and reputation lookup suite.

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#68

Spamhaus Lookup

Reputation and blocklist checking utilities.

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#69

Talos Intelligence

Cisco Talos threat and reputation research hub.

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#70

URLScan.io

URL scanning and screenshot investigation toolkit.

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#71

Hybrid Analysis

Malware analysis sandbox toolkit.

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#73

Have I Been Pwned

Breach lookup suite for emails and passwords.

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#74

Dehashed

Breach search toolkit for investigators.

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#75

Hunter.io

Email finder and domain email pattern toolkit.

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#76

Clearbit Logo / Enrichment

Company enrichment and logo API toolkit.

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#77

Brandfetch

Brand asset and logo lookup toolkit.

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#79

Favicon Kit

Favicon retrieval utilities for websites.

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#80

RealFaviconGenerator

Favicon package generator for all platforms.

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#81

TinyPNG

Image compression toolkit for web assets.

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#82

Squoosh

Browser image compression and conversion suite.

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#85

Convertio

File conversion toolkit across many formats.

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#86

CloudConvert

Cloud file conversion suite for documents and media.

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#87

ILovePDF

PDF tools suite for merge, compress, and convert.

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#88

Smallpdf

PDF utility suite for everyday document tasks.

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#89

PDF24 Tools

Free PDF toolbox with many converters.

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#90

Online-Convert

Multi-format media and document conversion hub.

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#91

Base64 Decode/Encode tools

Developer encoding utility commonly bundled in tool hubs.

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#92

JWT.io

JWT debugger and developer token toolkit.

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#93

Regex101

Regular expression testing and explanation suite.

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#94

ReqBin

API request testing toolkit in the browser.

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#95

Hoppscotch

Open-source API development toolkit.

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#96

Postman

API platform with collections, testing, and collaboration tools.

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#97

JSON Formatter

JSON validate/format utility popular in tool suites.

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#98

Diffchecker

Text/code/image difference comparison toolkit.

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#99

Carbon

Code screenshot styling toolkit for developers.

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#100

Excalidraw

Whiteboard diagramming toolkit for product/tech teams.

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