Apps similar to Altium Designer include KiCad, which is free and open source. Other options are Fritzing, Square Sketch, QUCS and LibrePCB. You're spoiled for choice with Circuit Simulators like Altium Designer: we list more than 50 alternatives for Windows, Linux, Mac, the web and iPhone.
Flux is where engineers shape the future of hardware, together. Contribute to the open source community, manage your projects, review schematics like a pro, track issues and features, power your workflows, and secure work before you commit it.
CR-8000 is a comprehensive PCB design suite that enables the development of a product from concept to manufacturing. CR-8000’s fully integrated design flow ranges from initial system planning, where critical design decisions are made about design partitioning, component...
Japan
DipTrace - Professional Schematic Capture and PCB Design Software
Are you looking for a professional and easy-to-use PCB Design software with powerful autorouter and reasonable price? Try DipTrace and you will be surprised! DipTrace is a complete state-of-the-art PCB Design Syst.
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Livewire is a sophisticated software package for designing and simulating electronic circuits.
Circuit Wizard is a revolutionary new system that combines circuit design, PCB design, simulation and CAD/CAM in one complete package.
CircuitMaker is the best free PCB design software by Altium for Open Source Hardware Designers, Hackers, Makers, Students and Hobbyists. From the about page of the website:
With Sprint-Layout you can design your PCB’s quick and easy. There is no unnecessary “ballast” which makes it difficult to keep the overview or which makes the usage almost impossible. Because of the logical and understandable strucure of Sprint-Layout the usage is very easy to...
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The main home page for the Robot Room Copper Connection PCB editing software. The Copper Connection application lets you design circuit boards.
PCB Design Software, Schematic Capture Software and automatic 3D model generation. The PCB layout generates 3D models automatically
United Kingdom
Now even better: FluidDraw stands for fast and easy standardised documentation of your machines or systems. With the new FluidDraw P6, you can create pneumatic and electric circuit diagrams even more reliably and efficiently.
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