The 3.0 version of ISListen for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to Design & Photo Tools. We recommend checking the downloaded files with any free antivirus. This free Mac app is a product of Tucsen.
From the developer:
ISListen is capable of low light microscope imaging with exposure up to 5 seconds. This range of cameras provides excellent colour images, MH15 monochrome camera is available. The program provides exceptional image quality and also long exposure suitable for Fluorescence, Dark Field microscopy imaging at economical costs.
You may want to check out more Mac applications, such as Cuadro or iPodEditor, which might be similar to ISListen.