Electronic circuit simulators

SPICE (Simulation Program with Integrated Circuit Emphasis) is a general-purpose, open-source analog electronic circuit simulator. It is a program used in integrated circuit and board-level design to check the integrity of circuit designs and to predict circuit behavior.

free electronics circuit simulator software

2014 video game

Tinkercad is a free-of-charge, online 3D modeling program that runs in a web browser. Tinkercad is widely used in schools and beginner maker communities because its simple interface allows users with little or no prior experience to learn basic 3D modeling concepts. Since it became available in 2011, it has become a popular platform for creating models for 3D printing as well as an entry-level introduction to constructive solid geometry in schools.

circuit-design system

electronic schematic capture and simulation program

gpsim is a full system simulator for Microchip PIC microcontrollers originally written by Scotte Dattalo. It is distributed under the GNU General Public License.

KTechLab is an IDE for electronic and PIC microcontroller circuit design and simulation; it is a circuit designer with auto-routing and a simulator of common electronic components and logic elements.

CAD software by Powersim Inc

computer program for efficiently reducing the complexity of digital electronic gate circuits

modern analog and mixed signal circuit simulator

LTspice is a SPICE-based analog electronic circuit simulator computer software, produced by semiconductor manufacturer Analog Devices (originally by Linear Technology). It is the most widely distributed and used SPICE software in the industry. Though it is freeware, it is not artificially restricted to limit its abilities (no limits on: features, nodes, components, subcircuits). It ships with a library of SPICE models from Analog Devices, Linear Technology, Maxim Integrated, and third-party sources.

Micro-Cap is a SPICE compatible analog/digital circuit simulator with an integrated schematic editor that provides an interactive sketch and simulate environment for electronics engineers. It was developed by Spectrum Software, and was only available with a paid commercial license. In July 2019, Spectrum Software closed down and Micro-Cap was released as freeware. Software updates and technical support are no longer available. In early 2023, their website went offline, though it was previously backed up at archive.org.

Ngspice is an open-source mixed-level/mixed-signal electronic circuit simulator. It is a successor of the latest stable release of Berkeley SPICE, version 3f.5, which was released in 1993. A small group of maintainers and the user community contribute to the ngspice project by providing new features, enhancements and bug fixes.