parallax Parallax Inc. is the premiere source for microcontrollers such as the BASIC Stamps and Propeller chip, as well as robotics, sensors, and tons of other accessories. Parallax is steadily increasing their product line to get as close to one-stop shopping as possible for their customers. Resources include free documentation and source code for almost everything they sell. Their Support / Discussion Forums are a large diverse community of everything from newbies to hobbyists to engineers.
embedded fm Embedded is the show for people who love gadgets: making them, breaking them, and everything in between. Interviews with engineers, educators, and enthusiasts.
the amp hour An off-the-cuff radio show and podcast for electronics enthusiasts and professionals. Featuring Chris Gammell and Dave Jones.
hackaday Hackaday serves up Fresh Hacks Every Day from around the Internet. Their playful posts are the gold-standard in entertainment for engineers and engineering enthusiasts.
icbreakout IC Breakout, LLC is a new startup, founded in 2014, dedicated to the electronic engineer. We are in business to provide solutions that speed development, mitigate delays and resolve some of the simple problems engineers face when developing new products. We think you’ll find that our breakout boards have small differences that sets us apart from any other breakout solution you have used. We also provide custom PCB design and layout services using Altium Designer, the number one PCB and FPGA development solution.
ee web EEWeb is a premier electrical engineering community that strives to offer its members the best online resources for hardware designers. EEWeb offers the ability to build a profile, search job listings, upload projects, Electronics Forum, etc.
digikey Digi-Key Corperation is a large distributor of electronic parts and tools. You can find just about anything here. When looking for a part it is a good idea to check here along with Jameco & Mouser.
jameco Jameco Electronics is a large distributor of electronic parts and tools. You can find just about anything here. When looking for a part it is a good idea to check here along with Digi-Key & Mouser. 
mouser Mouser Electronics is a large distributor of electronic parts and tools. You can find just about anything here. When looking for a part it is a good idea to check here along with Digi-Key & Jameco. 
bg micro B.G. Micro is a surplus distributor with a unique twist. Not only is the editor of their catalog a pretty funny guy, but they often provide technical data for some parts that other surplus vendors wouldn't bother with. This gives them an edge on certain items as there are often others who may carry similar interesting parts, but without data it often comes down to who has the info. 
all electronics All Electronics Corporation is a surplus distributor that has a pretty good selection of parts. As with any surplus distributor, items you find here may be a one time buyout and never be available again. 
electronic goldmine Electronic Goldmine is a surplus distributor that has a pretty good selection of parts. As with any surplus distributor, items you find here may be a one time buyout and never be available again. 
think geek Stuff for smart masses. I sometimes find stuff here to hack.