TechTrends is an intelligent search for Hackernews and Reddit. It lets you search for articles and provides a trend chart, similar to Google Trends. It's build in Python on top of Gensim.
This is the final presentation for our university in which we show how we build the project in detail.
The project is online on http://techtrends.mi.hdm-stuttgart.de/. More information under http://tuhrig.de/tag/techtrends/.