Zen Flowchart - The simplest tool to create flowcharts
Parsers - Parsers is a platform for extracting unstructured data from sites and their visualization without code.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
CRX Extractor - Get any Chrome Extension source code. Learn and hack!
Scheme Flowcharts - A huge pack of layouts for UX prototyping
Microlink - Extract structured data from any website