17
Schematica Software
803
Shareware
555 Timer PRO provides an array of design wizards and circuit blocks.
7
Schematica Software
795
Freeware
555 Timer Free is a component calculator for 555 integrated circuit.
2
Lucid Enterprises, Inc
498
Shareware
Calculate Component Vales for a variety of Electronic Circuits.
23
Circuit Diagram
2,205
Open source
It helps you make electronic circuit diagrams and export them as images.
15
University of Colorado
430
Freeware
Build circuits with resistors, light bulbs, batteries, and switches.
Pass4sure
Shareware
You will pass your 000-555 exam GUARANTEED using accurate 000-555.
6
Selectsoft Publishing
10,199
Commercial
555 incredibly fun games—something for everyone in this compilation.
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.
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.
100
ExpressPCB
16,321
Freeware
Create simple or complex layouts for printed circuit boards.
