Best Free SEO tools

Free SEO Analytics Tools

Google Analytics
Data Studio
Keyword Hero
Mozcast
Panguin Tool

Free Crawling & Indexing Tools

Redirect Path
Beam Us Up
Link Redirect Trace
Quick Click Website Audit
Screaming Frog
Screaming Frog Log File Analyzer
SEOlyzer
Screaming Frog Log File Analyzer
Xenu
Where Goes?
Check My Links
Robots.txt Generator
HEADMaster SEO
Keep-alive Validation SEO Tool
Hreflang Tag Generator
XML Sitemaps
BROWSEO
SFAIK Screaming Frog Analyzer

Free Keyword Research Tools

Answer the Public
Keyword Explorer
Keyword Planner
Keyword Shitter
Keywords Everywhere
wordable.io
Also Asked
Google Trends
Keyworddit
Keyword Surfer
CanIRank
Seed Keywords
Exploding Topics
Ubersuggest
Keys4Up
Wordtracker Scout
KWFinder

Free Link Tools

Link Explorer
Link Miner
Detailed
Backlink Checker
The Anchor Text Suggestion Tool by Linkio
SendPulse
Magic PR
Scraper
Help a Reporter (HARO)
Streak

Local SEO

Google My Business
Whitespark Google Review Link Generator
Local Search Results Checker
Moz Local Local Check Business Listing
Whitespark Local Citation Finder
Review Handout Generator
Review Checker
Mobile SERP Test
Mobile-First Index Checker
Mobile-Friendly Test
GTMetrix
Cloudflare

Free Multi-Tools

Semrush
Chrome DevTools
Marketing Miner
MozBar
SEO Minion
SEOquake
Sheets for Marketers
Sheet Consolidator
Google Search Console
Small SEO Tools
Varvy
Ahref’s SEO Toolbar
Bing Webmaster Tools
Woorank
SEObility
Lipperhey
Dareboost
Siteliner

On-Page SEO

Counting Characters Google SERP Tool
Natural Language API Demo
Rich Results Test
Structured Data Testing Tool
Google Tag Manager
View Rendered Source
SERPSim
Merkle’s Schema Markup Generator
Animalz Revive
Copyscape Free Comparison Tool

Research

BuzzSumo
Hunter
SimilarWeb
Wappalyzer
Wayback Machine
Bulk Domain Availability Checker
SEO Explorer

Free Rank Checking Tools

Ahref’s SERP Checker
SERPROBOT
Taptimize
Bulk Google Rank Checker
LSI Graph

Free Site Speed Tools

Mobile-Friendly Test
Lighthouse
Page Speed Insights
SpeedMonitor.io
WebpageTest

WordPress SEO Tools

RankMath
Yoast SEO
Ahrefs WordPress SEO Plugin