ActiveXperts Network Monitor 2015 proactively manages network servers, devices, databases and more.

Microsoft Resource Kits - Windows 2003 Resource Kit

DH.exe  (Windows 2003 Resource Kit)

The Window Server 2003 Resource Kit is a set of tools that system administrators and engineers use to manage or support a Windows Server 2003 system. Use it to streamline management tasks such as troubleshooting operating system issues, managing Active Directory, configuring networking and security features, and automating application deployment.
DH.exe - Display Heap
DH is a command-line tool to display information about heap usage for user-mode processes or pool usage in kernel-mode memory. It also enables you to lock heaps, tags, stacks, and objects. DH accepts command-line switches to identify which process to display information for and what information to display, and writes formatted output to a text file.