TweetyFeely is a Shiny app that allows you to read the positive and negative tweets about any topic, the popularity trend and sources of such tweets.
It uses the twitteR R package to connect to the micro-blogging service.
This little app got me a job as an NLP engineer. The idea was to write a quick prototype in 20 minutes or less, as part of the interview.
Here are some of the recent screenshots of the app:
We can see on this screenshot that (at the moment this analysis) Donald Trump is trending more positively than Hillary Clinton