N++ Project View
A simple plugin for Notepad++ that allows a user to organize their documents into projects.
File Information:
Current version: v1.5
Size: 203 KBDownload: NppProjectView.dll

Screenshots
(click to view)


Overview

Project View is a .NET plug in for Notepad++; it gives the user the ability to organize and view their documents in a 'project' type layout (similar to that of how a lot of IDE's organize their project/solution views).

To install it, close any open Notepad++ instances, download the DLL and put it in your plugins folder with your Notepad++ installation (usually residing at C:\Program Files\Notepad++\plugins or C:\Program Files (x86)\Notepad++\plugins for 64-bit versions of Windows), start Notepad++ and Project View will now be in your Plugins dropdown menu.

Project View aims to be as much like an IDE project view as possible, as such current support includes the following:
  • Multiple project files in the same view
  • Drag and drop support (drag/drop files or folders)
  • Virtual folders
  • Moving files between nodes/projects
  • Renaming projects
  • Shell icon displays
  • Open in Explorer/Shell commands
And more!

Source