CleanMyMac X is an user friendly Mac app that comes with a stylish design and helps you detect the junk files, but also user and system cache / log files, broken preferences or login items, apps that have universal binaries (you can remove the executable that is not suitable for your architecture), language files (you can keep only the one you actually employ).
Folx combines two functionalities: download manager and torrent client.
Folx makes downloading extremely easy: just open the page with the file to be downloaded, click the link in your browser and Folx will start the download for you. The application splits the file being downloaded in up to ten threads, thus significantly increasing the download speed. Its auto resume option comes handy when the downloading gets interrupted. You can also assign a tag or a few to the downloaded content for accurate and easy search through the downloaded files. You can optimize traffic allocation between different applications by regulating manually the download and upload speed.
File Cabinet Pro is the file manager for the macOS menu bar. Quickly navigate to files without cluttering your desktop. Open, move, rename, compress, tag, trash, copy and paste files, all from the menu bar. You can open many file types natively in File Cabinet Pro or open files by launching other applications. It's easy to click into directories in icon view, drill through directories in list view, or navigate the file tree in column view.
Lyn is a lightweight and fast image browser and viewer designed for photographers, graphic artists and Web designers. Featuring an extremely versatile and aesthetically pleasing interface, it delivers an easy-to-use geotagging technology and a complete solution for sharing your photographs.
RAR Extractor can extract compressed files in all most formats(over 50 formats).
4k Wallpaper is a beautiful and easy-to-use app. It selects a large number of beautiful and 4k & HD wallpapers (600+) and adapts to the full screen.
BatchPhoto is a powerful all-in-one photo manipulation program for Mac that lets photographers, Web designers, business people, and families enhance photos quickly and efficiently.