Fluoroscope (version 1.0.0)
Fluoroscope thumbnail image
(click above for full image)

Fluoroscope lets you view the structure and contents of Win32 executable files (.exe, .dll, etc.). Examine the fields of the windows header, the sections that make up the body of the executable and the bytes of each individual section.
You can disassemble and view the instructions of the code sections in the executable as well.
For 32-bit Windows, you need to have .NET 4.0 installed to run it.
Open source, written in C#

download Fluoroscope
source code is available here

Resourcery (version 1.0.0)
Resourcery screenshot

Resourcery lets you examine the resources stored in Win32 executable files (.exe, .dll, etc.). View the bitmaps, string tables and other resource data that makes up its user interface.
For 32-bit Windows, you need to have .NET 4.0 installed to run it.
Open source, written in C#

download Resourcery
source code is available here