KiCad's Schematic Editor supports everything from the most basic schematic to a complex hierarchical design with hundreds of sheets. Create your own custom symbols or use some of the thousands found in the official KiCad library. Verify your design with integrated SPICE simulator and electrical rules checker. KiCad's PCB Editor is approachable enough to make your first PCB design easy, and powerful enough for complex modern designs. A powerful interactive router and improved visualization and selection tools make layout tasks easier than ever.
EasyEda PROThe function is more powerful, the legacy problems of the standard version will be solved, and the new PCB drawing will be solved and free schematic drawing software. The PCB is based on the WebGL engine, which can smoothly provide PCB design with tens of thousands of pads, and various constraints will be strengthened to provide more powerful rule management. Various constraints will also be strengthened, providing more powerful rule management, etc. More powerful device selection function, you do not need to switch back and forth between Lichuang Mall and EasyEDA Pro editor frequently. Provides the concept of device, device = symbol + footprint + 3D model + attribute, only allows placing the device in the schematic/PCB canvas. Enhance library reuse. Supports hierarchical drawing, can support up to 500 schematic pages, and PCB supports 50,000 components and can still zoom, pan and route smoothly. Supports multiple single-board designs in one project. More powerful DXF import and export, more powerful PDF export. Built-in auto-routing function, the standard version requires an external auto-routing plug-in. EasyEDA Pro is still under development, and some of the original functions of EasyEDA Pro Standard Edition will be gradually provided.
CadSoft Eagle: is electronic design automation (EDA) software that lets printed circuit board (PCB) designers seamlessly connect schematic diagrams, component placement, PCB routing, and comprehensive library content and free schematic drawing software
SmartDraw: includes quick-start templates for over 70 different diagram types from flowcharts to floor plans. Powerful automatic formatting means perfect layouts in minutes. It's the right fit whether you're working on your own or collaborating with a large enterprise team.
Proteus: capture combines a powerful design environment with full support for design re-use, assembly variants and a complete BOM reporting sub-system.
Whether you are making PCB's or simulating embedded systems our schematic capture contains all the electronic design tools you need.
Circuit Lab: Build and simulate circuits right in your browser. Design with our easy-to-use schematic editor. Analog & digital circuit simulations in seconds. Professional schematic PDFs, wiring diagrams, and plots. No installation required! Launch it instantly with one click. Launch CircuitLab and free schematic drawing software
PSPICE 9.1: is a complete simulator that allows you to analyze the behavior of an electric circuit board. Download PSpice free and try its functions and methods. The design of any circuit board requires very specific software. There are many things that have to be taken into account, like the fact that circuit boards can vary in kind, from analog to digital, or be a combination of both. OrCAD is an application that has been specifically developed to design circuit boards. And to test the designs that we create with OrCAD, we'll need an application like PSpice A/D Circuit Simulator.
Design PCBs Printed circuit boards (PCBs) are essential for modern-day life, but learning the ins and outs of what is often a complicated subject can be intimidating. Our PCB for beginners guide helps you understand the basics of printed circuit boards, so you will be more familiar with components and materials should you decide to design your own custom printed circuit boards for a prototype or new product.
XCircuit: is a UNIX/X11 (and Windows, or Windows using Cygwin and the Cygwin X-Server) program for drawing publishable-quality electrical circuit schematic diagrams and related figures, and produce circuit netlists through schematic capture. XCircuit regards circuits as inherently hierarchical, and writes both hierarchical PostScript output and hierarchical SPICE netlists. Circuit components are saved in and retrieved from libraries which are fully editable. XCircuit does not separate artistic expression from circuit drawing; it maintains flexiblity in style without compromising the power of schematic capture. XCircuit is flexible enough to be used as a generic program for drawing just about anything, and is competitive with powerful programs such as "xfig". It is especially good for any task requiring repeated use of a standard set of graphical objects, including architectural drawing, printed circuit board layouts, and (my personal favorite) music typography (see my Music Page for examples) and free schematic drawing software
TinyCad: is a an open source program for drawing circuit diagrams which runs under Windows. Creating libraries of circuit symbols in TinyCAD is easy, but time-consuming. If you have some symbols you feel might benefit other TinyCAD users, then why not upload the symbols to this site to allow other users to download them and free schematic drawing software
PCB123: A smooth transition from design to manufacturing is vital to the success of your PCB project. That’s why we designed PCB123® to be the fastest and easiest PCB design software from start to finish— then decided to give it away for free! Only PCB123 has the time-saving processes from over 40 years of PCB manufacturing expertise built right in: Schematic design, board layout, Bill-of-Materials management and DFM checks, all in one easy-to-use application. Enhanced User controls (Faster rendering, smoother drag and drop, more zoom control, unified control panels) *NEW Your order will ship on-time when ordered through PCB123 or the PCBs are free, guaranteed. *NEW Unrestricted Drill Sizes on your quick turn PCB123 orders Slots and Cutouts available on boards and in parts definitions Keep layout, schematic, and BOM in-sync and up-to-date, automatically Quote in real-time and order from within the applicationBe confident in manufacturability with built-in DFM, DRC, and parts availability Full access to all of Sunstone's manufacturing capabilities *NEW Gerber as-built files available free-of-charge when you place your first order and free schematic drawing software
Dia: is free Open Source drawing software for Windows, Mac OS X and Linux and free schematic drawing software. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.
