Clusters is described as 'Formerly known as Squeeze, is a background file compressor, which uses the new HFS-compression technology in Snow Leopard to transparently compress the folders you configure it to process. Mac OS will read those files normally, they will just take less disk space' and is an app in the file management category. There are three alternatives to Clusters for Mac. The best Clusters alternative is MacClean. It's not free, so if you're looking for a free alternative, you could try WeCleanse.
Empowers Mac users with powerful cleaning and optimization tools, ensuring device efficiency, increased security, and enhanced privacy with removal of system junk, duplicates, and management of startup items.
Provides malware and virus detection, deep Mac system cleanup, startup management, duplicate file removal, frees up disk space, optimizes SSDs, and safeguards Macs from spyware, adware, and other threats while improving overall performance.
Simple, Free, and Lightweight Mac Cleaner app that can reclaim gigabytes of free storage on your Mac. macOS System/Other junk cleaning now made easy.
not a compressor but a resource remover
China
not a compressor but a resource remover