Power Booster 2.9.3 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 program lies within System Tools, more precisely System Optimization. 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. This free Mac application was originally developed by Giau Huynh.
From the developer:
Power Booster is a system optimization tool. The application cleans temporary files, such as logs, caches files, downloads, etc. In addition, it optimizes memory when an app closes and reclaims the unused memory. Furthermore, it features accurate and fast duplicates detection.
You may want to check out more software for Mac, such as Focus Booster, Chaikin Power Tools or Memory Booster - RAM Optimizer, which might be related to Power Booster.
System Optimization
Antivirus