Associated .HDMP software

Windows
HDMP file extension
Windows Heap Dump
HDMP files are uncompressed dump files generated by Windows XP or Vista when a program crashes.
Dump files also come in compressed form called minidumps with the extension "MDMP".
A dump file is a coded explanation of what a crashed application was doing when the problem occurred, along with information about the system's state of operation. These files serve for troubleshooting purposes.
The application "devenv.exe" , which comes with Visual Studio 2010 opens dump files.
The information in the file helps programmers find out what went wrong and improve applications. Normal users have no use for these files.