15
University of Colorado
430
Freeware
Build circuits with resistors, light bulbs, batteries, and switches.
740
The Document Foundation
416,776
Open source
Write documents and create presentations, databases, and spreadsheets.
LibreOffice
2
Freeware
LibreOffice is the power-packed free, libre and open source personal.
LibreOffice
2
Freeware
Power-packed free,libre and open source personal productivity suite for Windows.
27
Matt Pyne
6,472
Open source
Draw electrical circuit diagrams and PCB netlist files.
1
Design Master Software, Inc.
4
Commercial
draw receptacles/equipment/calculate circuit loads/panel loads/voltage.
1
Capilano Computing Systems Ltd
193
With DesignWorks Lite you can draw professional circuit diagrams.
Catena Software Ltd.,Diodes Inc
58
Freeware
Allows you to draw a circuit which can be tested in simulation.
LibreOffice
Freeware
You are not recommended to use LibreOffice beta builds for "mission-critical".
LibreOffice
74
Freeware
LibreOffice is an open source project and you can therefore download.
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.
2
General CADD Products, Inc.
23
Shareware
Allows you to easily and accurately draw anything you might normally draw.
