The below 23 free tools, apps and software downloads are provided by Google to help businesses, marketers and developers with SEO and Digital Advertising efforts.
[jumbotron]
Ad Grants

Nonprofit organizations can apply to receive $10,000 per month of AdWords advertising. That’s A LOT of free exposure despite minor campaign limitations.
[/jumbotron]
[jumbotron]
AdWords Best Practices

Google’s own best practices guide makes an excellent reference tool when navigating the ever changing AdWords landscape.
[/jumbotron]
[jumbotron]
AdWords Keyword Tool

Find out how many people search Google using keywords and phrases related to your business. Research and discover new ideas.
Install Android App
[/jumbotron]
[jumbotron]
AdSense

Still one of the easiest ways to monetize your website and/or blog. AdSense displays ads on your website, blog or app.
Dig even deeper – get the Chrome extension.
Install Android App
[/jumbotron]
[jumbotron]
Alerts

Create customized alerts and receive email or RSS notification of freshly indexed content that matches or relates to the type of alert set.
[/jumbotron]
[jumbotron]
Analytics

A powerful and robust tool that provides valuable insight about your website’s visitors.
Dig even deeper – get the Chrome extension.
Install Android App
[/jumbotron]
[jumbotron]
Cloud Print

Connects your printers to the cloud enabling control from any web-connected device like your smartphone.
[/jumbotron]
[jumbotron]
Correlate

Compare and correlate search patterns with real-world trends. Companion to Google Trends.
[/jumbotron]
[jumbotron]
Custom Search Engine

DIY Site Search. Use Google to power and/or monetize search on one or more of your websites.
[/jumbotron]
[jumbotron]
Display Benchmarks

A useful tool designed to compare AdWords display campaigns with the rest of the industry. See how your campaigns stack-up performance wise.
[/jumbotron]
[jumbotron]
Domains

Register and manage domain names – includes FREE PRIVATE registration and one free domain.
[/jumbotron]
[jumbotron]
Mobile-Friendly Test

Analyze your website to see if it passes Google’s mobile-friendly test. Fear not if your page doesn’t pass, corrective tips are provided.
[/jumbotron]
[jumbotron]
My Business

Verify and manage your business footprint across Google Search, Maps and Google+. The cornerstone for your business’s presence on Google.
Install Android App
[/jumbotron]
[jumbotron]
Primer

Quick and easy interactive marketing lessons from Google on your smartphone. Learn about valuable marketing concepts whenever you’ve got a spare 5 minutes.
[/jumbotron]
[jumbotron]
Search Console (formerly Google Webmaster Tools)

Connect websites to learn about potential issues that deal with security, indexation, structured data, links and mobile friendliness.
[/jumbotron]
[jumbotron]
Search Engine Optimization Starter Guide

A 32 page PDF containing general information and guidelines for optimizing websites for search engines.
[/jumbotron]
[jumbotron]
Sites

Quickly build (one click), manage, share and deploy websites and web pages with ease. Remember Geocities? It’s like that, but a little fancier.
[/jumbotron]
[jumbotron]
Structured Data Testing Tool

Test your website’s structured data (knowledge graph, ratings, reviews and other markup) to make sure they are formatted correctly.
[/jumbotron]
[jumbotron]
Think With Google

High quality repository of marketing resources featuring consumer trends, marketing insights, case studies, industry research and creative inspiration.
[/jumbotron]
[jumbotron]
Trends
View real-time trends and explore past, present and estimated future trends for popular topics, searches and YouTube videos. Plus – embeddable charts!
[/jumbotron]
[jumbotron]
Trusted Store

Ecommerce much? Become a Google Trusted Store and get seller ratings displayed in Google Shopping and AdWords.
[/jumbotron]
[jumbotron]
Voice

Enhance the capabilities of your current phone regardless of carrier with a new number for yourself or business.
Install Android App
[/jumbotron]
[jumbotron]
Web Designer

Professional grade HTML5-based web design software available for free download.
[/jumbotron]
There are a lot more than 23 Google tools for businesses available. Please comment below with your own favorites!