What: Topsy is a real-time search engine that indexes and ranks results based on millions of conversations happening on social media, particularly Twitter. Topsy optimizes social conversations to analyze content and trending topics.
"Our index for social media content is bigger than Bing and Google and larger than Twitter's own index, and it's publicly accessible," says Topsy cofounder and chief scientist Rishab Ghosh.
How: The company's latest product, Topsy Pro Analytics, has a Web-based interface.
Topsy Pro's dashboard allows users to search terms and apply different types of filters such as time, sentiment, language, and geography.
Results include instant accounts, top influencers, related topics, exposure, and trends to determine what will take off in the future.
Sentiment determines where a tweet ranges on a positive to negative scale and users can search terms going back several years, says Ghosh.
Why: With so much real-time content being produced Ghosh wanted to develop a search engine focused solely on social media.
"It's no longer just websites publishing things, but most of the new information is in conversations taking place online - and mostly on social media. That's the fastest-growing signal," he says.
Topsy provides a way to receive almost instant polling, explains Ghosh. "As more people use social media to express themselves, it's an essential aspect of any PR or brand managing strategy."
Who: Topsy is used by marketing, news, entertainment, and financial organizations to stay on top of breaking events and analyze customer feedback.
Twitter uses Topsy Pro Analytics and partnered with Topsy to create the Twitter Political Index for the 2012 election to gauge sentiment surrounding the presidential candidates.