Easy way to add and manage tracking codes:
https://marketingplatform.google.com/about/tag-manager/
Best tool to understand keyword demand by month and regions:
https://trends.google.com/trends/
Best SEO tool/software on the planet, direct from Google:
https://google.com/webmasters/tools
Push content into the Google index (by pass the crawler):
https://pubsubhubbub.appspot.com/
How to use Google Search like a pro:
https://support.google.com/websearch/answer/2466433
Get all your ranking reports and in-depth traffic information:
https://search.google.com/search-console/performance/search-analytics
See all your back links, free and complete report:
https://search.google.com/search-console/links
Get a free phone number, with amazing voice to text function:
https://voice.google.com/ (Only Available to US Google Users)
The complete keyword tool with historical traffic data:
https://ads.google.com/aw/keywordplanner/home