MIT offers a huge variety of free online course materials on various topics, engineering being one of them. They have sections for Aeronautics and Astronautics, Biological Engineering, Chemical Engineering, Civil and Environmental Engineering, Electrical Engineering and Computer Science, Engineering Systems Division, Materials Science and Engineering, Mechanical Engineering, and Nuclear Science and Engineering.
Collection of free online courses from the Delft University of Technology. Subjects include water management, microelectronics, offshore engineering, nanoscience, media and knowledge engineering, and many others.
UC Berkley Webcasts
Free online webcasts of various courses from UC Berkely. These are actual UC Berkeley Courses recorded and posted as webcasts online shortly after they’re recorded, so you can actually follow along with current course offerings. They also have archived courses going back to the Fall 2001 semester.
NPTEL Free Online Courses
A collection of free online course materials in both video and text formats published as a joint venture between the Indian Institutes of Technology & the Indian Institute of Science. Includes basic, civil, computer, electrical, electronics & communication, mechanical, ocean, biotechnology, mining, and metallurgy engineering courses.
Engineering.com Textbook Library
Engineering.com calls these textbooks, but they’re more like educational introductions to topics like thermodynamics, reliability, distribution, permutation and combination, common materials properties, gears, bearings, and a number of other topics. You can also find some useful “cheatsheets” like a Table of Integrals, Table of Derivatives, Laplace Transforms, Common Material Properties, Constants, and units. Overall it’s definitely a good resource.
All About Circuits
An totally free and incredible collection of online textbooks on electricity and electronics by Tony R. Kaphaldt. Includes 6 volumes: (1) DC, (2) AC, (3) Semiconductors, (4) Digital, (5) References, (6) Experiments as well as a discussion forum.
Engineering Reference Tables
Another one from Engineering.com, this is a collection of reference tables on various topics like Color Codes for Resistors, Washer Size Charts, Normal Shock Waves, Conversion Table, Periodic Table, and quite a few more.
Engineering Case Studies
Published by the Rose-Hulman Institute of Technology, Carleton University, and the American Society for Engineering Education
Free Video Lectures
An aggregator pulling together video lectures from a number of different universities on quite a few subjects into one, conveniently browsable/searchable site.
NST Virtual Library
Huge library of resources from the National Institute of Standards and Technology. Includes everything from popular publications, to science handbooks, to science and engineering-related encyclopedias.
Internet Math Library
From the MathForum at Drexel University, the Internet Math Library is a huge collection of online math resources.
IIE Knowledge Center
An amazing collection of resources related to industrial engineering from the Institute of Industrial Engineers. Includes archives of thousands of whitepapers, magazine articles, conference proceedings, industrial engineering case studies, links to other online resources, archived issues of publications such as Industrial Engineer and Engineering Economist, and industrial engineering webinars. This is really an incredible resource that doesn’t even require registration.
Newton Excel Bach
Authored by Doug Jenkins, this is a blog geared toward people working with excel in scientific/engineering applications.
A bi-weekly blog tracking current events in engineering.
Based on the Python programming language, Pythonxy is a free scientific and engineering development software for numerical computations, data analysis and data visualization. Includes Qt Eclipse and Spyder.
Another free platform for numerical computation with engineering applications.
A high-level programming language primarily intended for numerical computations. Mostly compatible with Matlab.
ASCEND is a flexible modeling environment for solving hard engineering and science problems offering object-oriented model description language, an interactive user interface, and a scripting environment. Originally written by Carnegie Mellon University.
A relatively popular engineering forum with topical discussion focused on most engineering disciplines.
Physics Forums Engineering Section
A physics discussion forum with an active engineering section. Topics include General Engineering, Engineering Systems & Design, Mechanical Engineering, Electrical Engineering, Materials & Chemical Engineering, and Nuclear Engineering
Discussion forum with very active exam prep and exam discussion topics, among others.
Tuition Free Colleges
The Cooper Union
A tuition-free school located in Manhattan with programs in Engineering, Art, and Architecture. Founded in 1859 by Peter Cooper, who designed and built the first steam locomotive in the U.S.
A tuition-free naval architecture and marine engineering college located in Glen Cove, NY, on Long Island Sound. Webb offers one degree option: a double major in Naval Architecture and Marine Engineering.
Alice Lloyd College
Most degrees focused on education, but they offer a number of programs in other areas, including a pre-professional program in engineering.
U.S. Naval Academy
Offers engineering-related majors in Aerospace Engineering, Computer Science, Electrical Engineering, General Engineering, Mechanical Engineering, Ocean Engineering, and Systems Engineering.
U.S. Air Force Academy
This one was incredibly difficult to find their list of degree programs. You can find a list of degrees around page 64 of this document. Engineering-related majors include Aeronautical Engineering, Astronautical Engineering, Civil Engineering, Computer Engineering, Electrical Engineering, Engineering Mechanics, Environmental Engineering, General Engineering, Mechanical Engineering, Systems Engineering, and Systems Engineering Management.
U.S. Coast Guard Academy
Offers majors in Civil Engineering, Electrical Engineering, Mechanical Engineering, and Naval Architecture & Marine Engineering.