KeywordTool.io - KeywordTool.io is the best FREE alternative to Google Keyword Planner and Ubersuggest. It uses Google's autocomplete feature to get over 750+ long-tail keywords for any given query.
Meltwater - Media monitoring, social media monitoring & media Intelligence products & tools help companies grow and build brands by listening, understanding, engaging and benchmarking their customers, markets and social business communities.
SECockpit - SECockpit is a keyword research and SEO management tool.
Critical Mention - Track. Measure. Share. Grow.
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
Soovle - Soovle is a customizable search engine provides the search suggestion of the best provider on the net.