Introduction
OP-Engine is a price comparison software designed for individuals who whish to create a list of goods sold on the internet and update the prices of these goods in one click. User can view graphs that show trends of prices for each item.
Potential uses:
Monitoring stock prices, indecies, and relevant information (volume, etc)
Comparing prices for a particular product sold on multiple websites (such as eBay, Amazon, etc)
Extracting weather information, such as temperature and wind speed, for multiple cities
Extracting almost any numerical information from web pages
Screenshot of the main window: