Ziproxy 3.3.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application belongs to Design & Photo Tools. This free Mac app is an intellectual property of Daniel Mealha Cabrita. We recommend checking the downloaded files with any free antivirus.
From the developer:
Ziproxy is a forwarding (non-caching) compressing HTTP proxy server.
Basically, it squeezes images by converting them to lower quality JPEGs or JPEG 2000 and compresses (gzip) HTML and other text-like data. It also provides other features such as: HTML/JS/CSS optimization, preemptive hostname resolution, transparent proxying, IP ToS marking (QoS), Ad-Blocker, detailed logging and more.
You may want to check out more Mac applications, such as Cuadro or Resize Now, which might be related to Ziproxy.