The 5.0.0 version of UUBooster 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. The program is categorized as Games. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X was originally produced by NetEase.
From the developer:
UUBooster is designed to help you enjoy lag-free console, computer, and mobile games. Using this application, you can play any games from anywhere at high speed. The utility can boost your game experience at one tap so you can connect to victory effortlessly.
You may want to check out more Mac applications, such as MAME OS X, DeSmuME or GameAgent, which might be related to UUBooster.