Keyword Suggestion and Research Tools:
Google Keyword Planner
Bing Keyword Planner
Ubersuggest
Google Trends
LSI graph
Keywords Shitter
SEPRS
Wordstream
Long Tail Pro
KW Finder
SEMrush
Keyword Tools
Keyword Everywhere (Google Extension for finding exact search value & CPC of a keyword)
Title Tag Meta Describe word Counter
Ezlocal
Portent
Word Counter checker
Page Title Pixel meter
HTML Heading Tag Analyzer
H1-H2 Tag Checker
Articles Rewriting or Content Spinning Tools
SpinBot
Small SEO Tools
Plagiarisma
Free Article Spinner
Green Spinner
Bloggin Platform :
Blogger.com
wordpress
wix
weebly
Search Engine :
google.com
yahoo.com
bing.com
yandex
Social Media :
Google Plus
Tumblr
ClassMates
Meetup
VK
Free Images Downloads Sites :
https://www.pinterest.com
https://pixabay.com
https://unsplash.com
https://www.pexels.com
https://picjumbo.com
http://www.gratisography.com
http://isorepublic.com
http://negativespace.co
https://stocksnap.io
Duplicate Content plagiarism Check
Copyscape
Small SEO Tools
Plagiarisma
Dupli Checker
Plagspotter
Analysis Tools by Google
Google Search Console
Google Analytics
Mobile Friendly Test
Google Page Speed Checker
Structured Data Testing
URL Submit
Link Disavow
Google Tag Manager
Google Alert
Keyword Planner
Google Trends
Analysis Tools By Bing and yandex
Bing Webmaster
Bing Analyzer
Mobile Friendliness Test Tool
Bing Keyword planner
Yandex Webmaster
keyword Planners
Yandex metrica
Most Essential Website Analysis Tools
FOUND SEO AUDIT TOOL ( https://www.found.co.uk/seo-tool/ )
GTmetrix ( https://gtmetrix.com/ )
Ping O Matic ( http://pingomatic.com/ )
Woorank ( https://www.woorank.com/ )
Website Grader ( https://website.grader.com/ )
Varvy SEO tool ( https://varvy.com/ )
Small SEO tools ( http://smallseotools.com/ )
Best Tools for Backlink Checker
Ahrefs ( https://ahrefs.com/ )
Majestic ( https://majestic.com/ )
LinkAssistant ( http://www.link-assistant.com/ )
Small SEo tools ( http://smallseotools.com/backlink-checker/ )
SEO view tools (http://www.seoreviewtools.com/valuable-backlinks-checker/ )
OpenLinkProfiler ( http://openlinkprofiler.org/ )
Rank Signals ( https://www.ranksignals.com/ )
Most popular WordPress plugins for SEO Optimizer
Jetpack
Yoast SEO
Advanced Automatic Updates
Contact Form 7
Wordfence Security
WP-Optimize
Social Connect or Mash Share
Akismet
Wp Sitemap Page
UpdraftPlus WordPress Backup Plugin
Rel Nofollow Checkbox
Site Map Creation
XML Site Map https://www.xml-sitemaps.com/validate-xml-sitemap.html
Geo Sitemap Generator ( http://www.geositemapgenerator.com/ )
Online marketplace For Freelancer
Upwork.com
Fiverr.com
Freelancer
Peopleperhour.com
Seoclerk.com
Domain & Hosting Seller :
BlueHost
Hostgator
Namecheap
GoDaddy
Sedo
1&1
SnapNames