Download of azul 0.5.2 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application is a product of Ken Arroyo Ohori. 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 program lies within System Tools, more precisely File Managers.
From the developer:
Azul is a viewer for CityGML files. The application supports loading multiple files, selecting objects by clicking on them or selecting them in the sidebar, and browsing their attributes. It allows you to copy object IDs to clipboard. The program is available under the GPLv3 license.
You may want to check out more software for Mac, such as QuickName, which might be similar to azul.