Chart.js - Easy, object oriented client side graphs for designers and developers.
Domcomp - No-nonsense domain price comparisons, updated daily
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.
Pricepeek - Compare prices of the same product across all Amazon locales
PlotNeurons - The most simple neural network plotter
dofo.com - Domain search platform Dofo.com gathers all registered (350 million) domains of the world in a single place. Dofo also brings together all the domain names that are on sale, provides useful features, all completely free.