AJHorn 6.0 can be downloaded from our website for free. The software lies within Education Tools, more precisely Science Tools. This tool was originally created by AJ-Systems.
From the developer:
AJHorn is a calculation program for horn loudspeakers, transmission lines, and special cases of this type. It can simulate Frontloaded Horns, Rearloaded Horns, Transmissionlines with Front Chamber, Bandpass-Horns, and other variants. It can output various parameters such as frequency responses (of impedance, sound pressure, electrical power, unified acoustic radiation impedance), and radius / area / height / radius of opening function.
You may want to check out more software, such as LoadRunner, Panel or Lasergene, which might be related to AJHorn.