Online textbook for learning theory with clear diagrams and explanations.

(Still unfinished) book that goes through circuit theory with interactive schematics that you can load, simulate and change.

(Still unfinished) book that goes through circuit theory with interactive schematics that you can load, simulate and change.

The industry standard free SPICE circuit simulator from Linear Technologies.

Open source SPICE circuit simulator.

Open source online simulator for simpler circuits with live interactivity and visualization

Free to try online, visual, interactive circuit simulator for simpler circuits

Open source integrated circuit simulator for DC, AC, S-parameter, noise analysis, etc.

Easy to use electronic circuit simulator, its advanced simulation engine can handle both analog and digital circuits and features realtime always-on analysis.

Professional-grade mixed signal simulator with wide variety of interactive simulation types.

Gerber viewer that lets you inspect the individual layers as well as the board preview.

Online Gerber viewer powered by Gerbv

3D Gerber viewer

No frills 2D layer viewer for Gerbers, without the excessive processing.

Easy to use online gerber viewer with trace hovering and measurement tools

Excellent Gerber viewer for Linux and BSD

The KiCAD gerber viewer

Open source EDA package with push and shove router, differential pairs and much more.

One of the most popular EDA packages due to it's (board size restricted) free version.

Gratis EDA package without restrictions, sponserd by RS Components

Free package from the maker of the go to pro software

Another open source package, good for people that like scripting and makefiles, Linux and BSD only.

Quality Schematic Capture and PCB Design software with (pin and signal layer restricted) free version.

A new, powerful and intuitive EDA tool for everyone, cross-platform and GNU GPLv3.

A free and open source EDA tool with the focus on shortcut operation

Caneda is an open source EDA software suite focused on ease of use and portability.

Beginner video tutorial that gets you to a manufactured board as quickly as possible.

A more comprehensive beginner to intermediate video tutorial

User discussion and help forum

Comprehensive written tutorial that takes you through creating a keyboard PCB.

Short PDF that goes over the menus and keyboard shortcuts for the most common operations.

Collection of all the KiCAD footprints available online and some scripts to manage them.

A html BOM generation tool for manual pick and place

Syntax highlighting for various PCB formats

Comparison service for quite a lot of different PCB batching and assembly services

Low cost PCB batching service with high quality boards with a signature purple silkscreen

Affordable quality circuit boards made in and shipped from Europe (Germany).

Low cost PCB batching service that prides itself on its "dirty" quality.

Low cost PCB batching service with inhouse low cost SMT service

Probably the most well known part search engine.

Part search from Supply Frame

Another search engine from Supply Frame geared towards discovering new parts.

Project sharing site that helps you buy parts and re-build projects. Open source and developed by yours truly.

Social site for sharing projects from the popular blog

Browser extensions that automates purchasing and part searching.

Web service to manage your part inventory with a nice user interface and Octopart integration.

Open source web service for managing your part inventory with parametric search and automatic datasheet import.

Another open source web service for managing part inventory with a permission system and a good barcode generator.

For viewing Eagle and KiCAD designs online

Parts library with free symbols & footprints. (Compatible with Eagle, KiCAD, Altium, OrCad, Allegro, etc.)

Retailer and designer of open source electronics development boards and other equipment and materials with excellent accompanying tutorials.

Another retailer and designer with excellent selection and tutorials.

Marketplace for electronics makers to sell low volume batches of their own designs

Probably the most popular blog covering electronics and hardware hacking with a whole staff of writers.

Andrew 'Bunnie' Huang covers hardware hacking, open hardware, manufacturing and more

Project logs, tutorials and articles about electronics and embedded software by James Lewis.

More project logs, tutorials and articles about electronics and embedded software, these ones by Dan Hienzsch.

Blog about open source hardware projects and interesting app notes

Probably the largest and most active forum to discuss electronic engineering topics

Sub-reddit dedicated to help on electronics topics

Question and answer site for electronics running on the popular Stack Overflow service.

Good place for beginner questions, other sub-forums on EEVblog should be suitable for questions on more advanced topics.

Off-the-cuff chat about electronics with Chris Gammel and Dave Jones (EEVBlog), often with guests

Christopher and Elecia White discuss embedded systems development and much more, often with guests.

Covers a specific EE topic each episode, sometimes with guests.

Weekly podcast where Parker and Stephen from MacroFab discuss EE topics and industry news

Covers general engineering topics from mechanical to electrical.

One of the earliest and most successful YouTube channels where Dave Jones does teardowns, tutorials and more.

YouTube channel that debunks and explains EE topics with a lot of comedy thrown in.

Video logs of reverse engineering and re-purposing consumer electronics hardware in creative ways

Tutorials on electronics projects, often suitable for beginners as well.

Very in depth teardowns, repairs and reviews of lab equipment and prototyping products.

Excellent tutorials about basic and complex analog hardware.

Teardowns, repairs and restorations with an emphasis on classic electronics gear.

Electronics tutorials, projects and how to's.

Buys cheapest electronic modules he can find and tries to do useful things with them

Teardowns, large lighting projects, xrays and more.

Series of videos on building an 8-bit computer on breadboards with excellent explanations of all the sub-circuits.

Electronic projects for the curious. As a member of the Boldport Club you’ll receive an electronics project once a month.

Curated Adafruit products, unique collectibles, and exclusive discounts. All delivered quarterly.

Community supported database of 3D models with a large number of electronic component models

Website dedicated to 3D models of parts (requires login)

A list of cheap electronics from China, that you can use in your projects

A much more comprehensive list of all the software tools available.

Another GitHub list: resources for Electronics Enthusiasts and Hardware Hackers

Awesome list of FPGA resources

A GitHub list of resources, projects and products for robot electronics

Awesome list of embedded programming resources