TotalFinder - TotalFinder is a plugin for Finder.app which adds tabs like in Chrome browser, dual panels similar to TotalCommander and more tweaks.
Ralpha Image Resizer - High-speed image batch conversion tool
Path Finder - The Finder, reinvented. Path Finder is an award-winning file browser and management application for Mac OS X.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Forklift - The most advanced dual pane file manager and file transfer client for macOS.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.