uBar is the Dock replacement. If you've never really liked the Dock, or have a soft-spot for the Windows Taskbar, uBar is here to save the day. uBar can be configured as a dock or task bar for macOS.
GarageSale is a slick, full-featured client application for the eBay online auction system.
Create and manage your auctions with ease. With GarageSale, you can create, edit, track, and manage multiple auctions in a single, intuitive application. GarageSale even integrates with several international eBay sites, as well as with PayPal and Twitter, to provide a complete, robust eBay client.
Tweaking applications for macOS come in various shapes and prices, and you are free to pick the one that meets your needs, be it focused on finding and fixing as many system errors and problems as possible or on boosting your Mac's overall performance.
Yoink helps by making drag-and-drop between Spaces or full-screen apps easier.
Every time you start dragging a file, Yoink fades in a tiny window on the left edge of your screen so you can drag files to it. This frees up your mouse so you can comfortably navigate to the destination of the drop and resume the drag from Yoink's window.