There was a download of TransistorAmp 1.1.5 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The latest version of the program is supported on PCs running Windows XP/XP Professional/Vista/7/8/10/11, 32-bit.
The software is categorized as Education Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
The actual developer of the free software is Stefan Bayer and Jessica Sarnecki. The default filenames for the program's installer are TransistorAmp.exe, _9403C56213EA1188EAA47D.exe, _A89F0BA13D196D8DA37461.exe, _AB8EDDD813DD8807FE380C.exe or _B323F6167C5A70A4E5B57B.exe etc. The most popular versions among TransistorAmp users are 1.1 and 1.0.
From the developer:
TransistorAmp 2 is a free software for the design of transistor amplifiers with one bipolar juction transistor. With the software you can design a transistor amplifier in common-base, common-emitter, or common-collector configuration. TransistorAmp 2 has a Spice call-interface which can be used to test the designed circuit with a circuit simulation program, e.g. LTSpice.
You may want to check out more software, such as Agelong Tree, ChaosPro or Moonphase, which might be similar to TransistorAmp.