eSketch PRO is a powerful schematic capture and simulation application specifically designed for the ultra fast rendition and simulation of frequency-shaping analog circuits such as preamplifiers, amplifiers, active filters, passive filters, crossovers, equalizers and tone controls. eSketch is a specialized program for circuits containing capacitors, inductors, resistors and op amps. It does not provide transistors, diodes or other non-linear devices.
The programs simplicity of use and speed of execution provide an "electronic sketching" environment in which the effects of changes in layout, component values, component tolerances and op amp Gain Bandwidth can quickly be determined.

Schematica capture
file merging
importing of (registered) Filter Wiz PRO files
rapid component (device) placement
fast editing of component values
op amp device database provides Gain BandWidth values for over 600 op amps
full circuit editing capabilities such as copy, cut and paste
annotation with text boxes and markers

Analog circuit simulation
automatic indication of when circuit is ready to simulate
view two graphs simultaneously
two voltage probes - view both, either, or difference
save previous traces to view up to 13 voltages or currents at once
amplitude response (real, imaginary, dB, volts)
phase and group delay responses
input impedance
component current, impedance and power dissipation
Sensitivity of output voltage to changes in component values
transient response to impulse, step and "staircase" inputs
"ideal" and "real" op amp models
Monte Carlo analysis
Parameter Sweep analysis
pole-zero placement