HEATKEYS

Distributor of electronic components and parts, DigiKey offers quality products with same day shipment, products include: Semiconductors, Capacitors, Relays, Resistors, AC DC Converters, Circuits, Microcontrollers, Power, Lighting & Wireless Supp...

Electronics ++

draw.io is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams

This is a discussion forum.

Best free software available all over the web. The free software categories include Windows Software, iPhone Applications, Social Networking Tools, and software installation videos.

Open Circuit Design: Home Page

Tools and Basic Information for Design, Engineering and Construction of Technical Applications

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Edraw is a powerful yet easy-to-use program for creating flowcharts, organizational charts, network diagrams, business presentations, building plans, mind mapping and lots more.

Online diagram and flowchart software. Create diagrams and drawings such as flowcharts, mind maps, network diagrams, UML diagrams, wireframes, user interface designs and other drawings online with LucidChart.