Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
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.
Clever - syncing between education applications for K-12 schools
Google Trends - Explore Google trending search topics with Google Trends.
Claroline - Claroline is a collaborative eLearning and eWorking platform.
Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition