Google (Google Search, Google Web search)

World’s most popular search engine with a market share of 90.91% and a plethora of extra services and tools.

Here are some of the tools and services that are important for SEO:

  • Google+
  • Google Keyword Planner
  • Google Alerts
  • Google Analytics
  • Google Maps
  • Google Mobile-Friendly Test
  • Google My Business
  • Google PageSpeed Insights
  • Google Search Console
  • Google Trends
  • Google Webmaster Tools
  • YouTube