Engineer's Handbook Contains useful conversion factors, resources and data associated with engineering and physics. Free on iTunes store.
RealCalc - A Realistic Scientific Calculator for Android
Engineering Professional - Combines all of the formulas from Chemical, Civil, Electrical, Environmental, Hydrology and Mechanical Engineering formulator apps. Over 650 formulas allow for determining everything from calculations on shafts to calculation on loads on beams.
FingerCAD - the first CAD application for technical drawing with fingers assisted by computer. With "FingerCAD" you can draw houses, bridges, floor plans, mechanical components, geometrical figures, anything that can be designed with a common PC CAD.
iEngineer - contains a complete specifications for over 300 U.S. and metric bolts and screws.
An international membership organization, founded in 1818, which promotes and advances civil engineering around the world. The purpose is to qualify professionals engaged in civil engineering, exchange knowledge and best practice, and promote their contribution to society. There are around 80,000 members worldwide (from Dictionary of Construction, Surveying, and Civil Engineering).
The American Society of Civil Engineers represents more than 150,000 members of the civil engineering profession in 177 countries. Founded in 1852, ASCE is the nation's oldest engineering society.
The Society of Fire Protection Engineers (SFPE) is a professional society for fire protection engineering. Established in 1950, it defines, develops, and advances the use of engineering best practices and expands the scientific and technical knowledge in this area.
Standing for engineering fundamentals, eFunda's mission is to create an online destination for the engineering community, where working professionals can quickly find concise and reliable information to meet the majority of their daily reference needs.
A digital media publisher that highlights the latest advances in technology for product innovation and manufacturing.
An online, in-browser tool for designing schematics. Online simulation allows for quick design iteration and electronic learning about electronics.
Electrical engineering study site covering entire aspects of the electrical engineering subject, from basic to advanced.
All About Circuits
One of the largest online electrical engineering communities for sharing knowledge and ideas.
Lets you explore, among others, many electrical and electronics projects and creations which you can also DIY, document, and share.
Dedicated to the community of tech savvy people working on projects in the field of electronics, microcontrollers, electronic circuits, schematics, circuit diagrams etc.