It offers an in-built antivirus that lets you protect the system from all possible threats. The software offers all the required features which you would need in order to improve the performance and security of the system. MacKeeper is, without a doubt, one of the most popular and the best CleanMyMac X alternative for macOS. CCleaner List of Top 11 Best CleanMyMac X Alternatives For Mac in 2021įind the detailed description and features of the top paid and free alternatives to CleanMyMac X for Mac below.