17
Schematica Software
803
Shareware
555 Timer PRO provides an array of design wizards and circuit blocks.
7
Schematica Software
794
Freeware
555 Timer Free is a component calculator for 555 integrated circuit.
1
Cadence Design Systems, Inc.
927
Demo
OrCAD PCB Designer is a tiered, scalable PCB design solution.
23
Circuit Diagram
2,205
Open source
It helps you make electronic circuit diagrams and export them as images.
52
Avant Force
1,754
Freeware
Orca Browser is an extremely fast and user friendly web browser.
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
3,047
Open source
Quite Universal Circuit Simulator is an integrated circuit simulator.
13
Richard P. Andresen
1,145
Shareware
Use analog circuit simulation for the professional circuit designer.
27
Cadence Design Systems, Inc.
1,916
Commercial
Cadence OrCAD Capture is the most widely used schematic design solution.
8
EMA Design Automation, Inc.
49
Commercial
Cadence SPECCTRA for OrCAD for robust PCB interconnect routing.
3
ABB
328
Freeware
Air circuit breakers can be used both as circuit-breakers for general protection.
Cadence Design Systems, Inc.
45
Freeware
OrCAD PSpice Schematics allows you to design circuits.
27
Matt Pyne
6,458
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.
