HEATKEYS

This cloud-based ArchiCAD-integrated community database collects and provides direct access to GDL elements. BIMcomponents.com helps you obtain trustworthy 3D or 2D elements in the form of parametric GDL objects.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

TFD Encyclopedia includes Computer Desktop Encyclopedia, Columbia Encyclopedia and many other great sources.

CAD news, tutorials and beyond for mac + pc | iPhone + iPad

PCB Heaven! Electronic theory, schematic circuits and PIC tutorials

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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.

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Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.