Ubiquiti airVision 1.1.3 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the software is Ubiquiti Networks, Inc. We recommend checking the downloaded files with any free antivirus. The software lies within System Utilities, more precisely Device Assistants.
From the developer:
Ubiquiti airVision provides advanced recording capabilities and powerful analytics with a breakthrough web based user interface. Combined with Ubiquiti's powerful line of H.264 megapixel airCam IP Cameras, airVision is a revolutionary price/performance IP video surveillance system.
You may want to check out more software, such as Ubiquiti UniFi Video, Compelson SyncML Server or AirView Spectrum Analyzer, which might be related to Ubiquiti airVision.