PriceCute - Keep up with your competition's pricing on Amazon

Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.

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.

Add-to-Calendar Button Generator - This open source projects lets everybody create amazing buttons, where users can add events to their calendars.

Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.

Plan - Plan is a better way to organize.