The 9.5.3.2 version of Apple Texting Software using USB Modem 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. We recommend checking the downloaded files with any free antivirus. The actual developer of this software for Mac is SmsSoftware.org.
From the developer:
Apple MacOS X Mass Bulk SMS Broadcasting Software allows the user to communicate with friends, relatives and business partners by sending standard messages or notifications to their contact numbers.
You may want to check out more Mac applications, such as Mac Bulk SMS Software for USB Modem, Mac Send Bulk SMS Software for USB Modem or Mac Bulk SMS Software for USB Modems, which might be similar to Apple Texting Software using USB Modem.
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