Electrical
A Cross Platform and Open Source PCB Design Suite
A full PCB design suite with schematic capture, PCB layout, SPICE simulation, 3D viewing, and manufacturing-file generation.
Create electronics the easy way.
A free, cross-platform EDA suite for drawing schematics and designing printed circuit boards with a strong semantic library system.
Foundations and Realization of Open, Accessible Design
An open-source RTL-to-GDSII digital chip-design flow for automated placement, routing, and system-on-chip layout generation.
ngspice is the open source spice simulator for electric and electronic circuits.
An open-source SPICE circuit simulator for analog, digital, and mixed-signal circuits using netlists and device models.
KLayout layout viewer and editor
A layout viewer and editor for integrated-circuit and photonic-mask data in formats such as GDS and OASIS.
Horizon EDA is an Electronic Design Automation package for printed circuit board design.
A modern EDA package for managing part libraries, drawing schematics, and designing and exporting PCB layouts.
An easy to use open source tool for power system modeling, analysis and optimization with a high degree of automation.
A Python library for power-system modeling, power flow, optimal power flow, state estimation, short-circuit analysis, and grid optimization.
The Next-Generation Simulation Software
A power-distribution simulation and analysis tool for modeling distribution systems, distributed energy resources, automation, and end-use technologies over time.
Open Distribution System Simulator (OpenDSS)
An electric-power distribution-system simulator for power-flow, harmonics, dynamics, and distributed-energy-resource studies.