Glimpse - Discover trends before they're trending
Google Trends - Explore Google trending search topics with Google Trends.
Reddit Bests - Discover products trending on reddit
Exploding Topics - Get inspirations for blog posts, startup projects, cocktail conversations and beyond on Trennd, the one-stop aggregator for emerging search and social trends.
Treendly - Track global trends
Swoop - Swoop is a closed loop marketplace, providing a direct relationship between advertiser and publisher.