DragTargets is a desktop tool that is similar to DropIt featured here on RGdot.com.

DragTargets makes the task of moving or copying files more efficient by providing an interface that acts as alternative of opening instances of Windows or alternative Explorers and then navigating to a particular folder.
When installed DragTargets presents a small window on [...]

CubicExplorer is described by its author as
CubicExplorer is a file manager which is aimed to replace Windows Explorer. It’s goal is to be easy and pleasant to use but still have enough power for more advanced usage.
CubicExplorer has an uncluttered interface with a relatively limited amount of features. It manages to give a clean look [...]

The not so clever article title aside SE-Explorer is a relatively new entry into the file manager/Windows Explorer alternative space. As of this date it is at version 0.0.30.600 and is not without its performance issues. The portable version tested on a XP computer is slow to start and the ever illusive zip or archive [...]

Hawkscope is described by its author as
Hawkscope is a productivity tool that allows you to access your hard drive contents quickly via system tray / menubar icon with dynamic pop-up menu
The main feature and usefulness of Hawkscope is that it provides a dynamic menu that pops up anywhere on the desktop by way of a [...]

As a follow up to this post reviewing 6 tools to view and analyze disk usage and this post on TreeSize here is review of SpaceSniffer. It is described by its author as

SpaceSniffer is a freeWare (or, better, donationWare) and portable tool application that gives you an idea of how folders and files are structured [...]

Locate32 is described by its author as
Locate32 is a file finder which works by indexing all your files on your hard disk drive…
When launching and using Locate32 for the first time the user creates a database which indexes all files on any drive. The indexing is relatively quick and can even be over in seconds [...]

As a followup to my post on TreeSize here are some other downloads I have come across that let the user view or visualize space usage on a disk.
For this article I chose to analyze a folder that is approximately 945MB and has 28 subfolders and 170 files. Using a not so new Windows [...]

TreeSize is a small executable that lets the user visualize how much space a drive or a folder and its subfolders is taking. Opening the program and opening any directory or folder presents a windows explorer like and expandable list of folders.
The results can be viewed in KB, MB, GB, or even mixed units so [...]

Ac Browser Plus file manager or windows explorer replacement is described by its author as
Advanced, multi-window file manager and FTP client for Windows
File managers are often used by regular and power users alike to extend the functionality of Windows Explorer. There are many mainstays and popular ones like the freeware FreeCommander, UltraExplorer, and Q-Dir and [...]