The 1.2 version of GreenNetVPN 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 free Mac application is Anonymith. The software lies within Internet & Network Tools, more precisely Network tools.
From the developer:
GreenNet VPN is a hotspot VPN secure proxy for MacOS devices. It encrypts your Internet traffic and turns public Wi-Fi into a private network safely and anonymously. The utility uses advanced VPN technology to encrypt your network traffic, enabling you to connect to a website via HTTPS, providing a secured shield to your Wi-Fi hotspot. Also, it detects your location automatically and connects you to the nearest and fastest server.
You may want to check out more software for Mac, such as AirportTraffic, QuickWho or Throttled Pro, which might be similar to GreenNetVPN.