Website Marketing Tools
Obviously search engine optimization is the Mother Lode. Yoast offers a great article about SEO at https://yoast.com/ They also have a free SEO plugin for WordPress websites.
You can also get search engine visibility applications for HTML websites. Purchase them from your hosting company. View my reseller account from Wild West Domains for many web related solutions.
They also offer ecommerce solutions
Tons of free information about website marketing tools is available from Google, Bing, Yahoo, etc. in their Webmaster Tools pages.
Some tools are for promoting your website off-line, like this qr code generator
I’ll add other tools and links as I find them valuable in the future.