Recs.
Updated
Uninstall apps and all unwanted junk files
Stop apps from running at Mac startup
A big number of startup programs cause Mac performance to slow down.
• Change startup programs
• Disable unneeded launch agents and system daemons.
• Turn off or even remove login items.
Disable and uninstall Mac system extensions
Operate user and core extensions installed on your Mac.
• Remove macOS install files
• Remove browser extensions
• Clean up Screen savers
• Manage Preference Panes
• Remove Internet Plugins
• Uninstall Mac Widgets
Clean up remaining files – the leftovers of already removed apps
Check your Mac for traces of previously removed apps that remain on the disk when you drag & drop applications to the Trash.
Find and delete all leftovers, remains and broken service files to free up your disk space!
Change the default app for specific file types
Manage file associations on macOS and select programs you want to open specific file types with. There is no easier way to force an association between a file type and an application than by using App Cleaner & Uninstaller.