Download of AirDial 1.1.2 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application is categorized as System Tools. This Mac application is a product of Xnet Communications GmbH. 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.
From the developer:
AirDial removes complexity and increases productivity by simply integrating your existing hardware with your Mac. AirDial is a PBX telephony app that runs in the background on your Mac to aid productivity. AirDial connects to your PBX or VoIP Provider to form an invisible bridge between your Mac and your Phone.
You may want to check out more Mac applications, such as Dock Delight, which might be related to AirDial.