Twitonomy - Twitter analytics and much more.
Simply Measured - Simply Measured helps data hungry marketing & PR folks measure social media and create beautiful, custom reports in Excel and other formats.
hashtags.org - Hashtag is an extensive hashtag research platform for analytics and tracking of hashtags, providing...
Vaizle - Vaizle is a marketing analytics suite that brings all your ads & social media data into one actionable dashboard. Try Vaizle's free tools for social media, ads, and competitive analysis, alongside Google Sheets and MS Excel connectors.
RiteTag - No idea which hashtags to use? Get instant hashtag suggestions for images and texts on desktop and mobile.
BuzzSumo - BuzzSumo allows you to discover the most shared links and key influencers for any topic. It's free to use and you can run a search in seconds!