15
University of Colorado
430
Freeware
Build circuits with resistors, light bulbs, batteries, and switches.
Daniel Stahl, Kevin Wellwood
62
Open source
Build and simulate boolean logic circuits with custom components.
5
University of Colorado, Department of Physics
46
Freeware
It allows you to build circuits with resistors, light bulbs, batteries, etc.
Megasys Software
7
Shareware
For calculation of meshed or ring main type of circuit network.
2
University of Colorado, Department of Physics
117
Freeware
It is simply a graphical representation of what a resistor does in a circuit.
8
the Qucs team
3,049
Open source
Quite Universal Circuit Simulator is an integrated circuit simulator.
13
Richard P. Andresen
1,147
Shareware
Use analog circuit simulation for the professional circuit designer.
3
ABB
329
Freeware
Air circuit breakers can be used both as circuit-breakers for general protection.
G Element Pte Ltd.
4
Freeware
You can use the Building Composer Tool to quickly export your building models.
CANMET Energy Technology Centre (CETC)
2
Freeware
Compare your proposed building design against a building of similar design.
8
CS Odessa
14
Shareware
Building plan tools help architects and building engineers.
27
Matt Pyne
6,472
Open source
Draw electrical circuit diagrams and PCB netlist files.
25
Moeller Software
259
Shareware
EASY-SOFT is a graphic editor for representation of the circuit diagram.
203
Cadence Design Systems, Inc
15,161
Freeware
PSpice Student is an analog circuit simulator designed for students.
31
KiCad Developers Team
14,218
Open source
You can create schematic diagrams or printed circuit board with up to 16 layers.
