Chart.js - Easy, object oriented client side graphs for designers and developers.
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
AnyChart - Award-winning JavaScript charting library & Qlik Sense extensions from a global leader in data visualization! Loved by thousands of happy customers, including over 75% of Fortune 500 companies & over half of the top 1000 software vendors worldwide.
Pricy - Amazon price watch
PlotNeurons - The most simple neural network plotter
Price Tracker by Relbis Labs - Price Tracker is a command-line tool for monitoring the prices of productsFeaturesTracking prices and availability of products.Tracking Amazon Kindle books.Displaying products information in a terminal.Exporting data into Excel and YAML files.