HEATKEYS

YouTube is a place to discover, watch, upload and share videos.

Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. ...

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

IOPscience is a unique platform for IOP-hosted journal content providing site-wide electronic access to more than 130 years of leading scientific research, and incorporates some of the most innovative technologies to enhance your user-experience.

IEEE Xplore. Delivering full text access to the world

Scratch: a programming language for everyone. Create interactive stories, games, music and art - and share them online.

G-TraX Simulations is the go-to site when you

Rail Works for America

COMSOL Multiphysics is an engineering, design, and finite element analysis software environment for the modeling and simulation of any physics-based system.

Railroad links directory & search engine with 17,000 railroad websites: train travel, model railroads, railfanning, train simulators & rail industry.