Which are the most useful online marketing tools?

Some of the most common tools that help in the digital marketing effort include

    MailChimp–A powerful tool for email marketing campaigns.
    Buzzsumo- An effective tool used in Content Marketing that assists in finding the most shared content on certain topics.
    Canva- A simple to use graphic design software.
    Ahrefs- An all in 1 SEO tool used to track keyword performance, measure social metrics, perform backlink analysis, analyze content, and do keyword research.
    Buffer and HootSuite -social media automation tools that help in fully automating the postings on Facebook, Twitter, Google+, Facebook and LinkedIn.
    GoogleAnalytics and Kissmetrics to track your digital marketing performance