N.
With this tool you can compare search volume patterns across specific regions, categories, and time frames. Helps you gets better SEO results.
O.
Net Promoter is both a loyalty metric and a discipline for using customer feedback to fuel profitable growth in your business.
P.
Piwik is a downloadable, open source web analytics software program. It provides you with detailed reports on your website visitors: the search engines and keywords they used, the language they speak, your popular pages… and so much more.
Q.
PostRank measures audience engagement and provides integrated tools to enable you to customize your RSS subscriptions.
R.
Quantcast provides publishers, marketers and agencies unmatched capabilities to measure, organize, discover and transact based on directly-measured traffic and inferred audience data.
Read more about my digital tools on my A to Z list of digital tools ; click here