Debugging Tools for Windows

agestore.exe Handy file deletion utility that deletes files based on last access date.

cdb.exe Console-based user mode debugger. Virtually identical to NTSD.

dbengprx.exe Lightweight proxy server that relays data between two different
machines.

dbgrpc.exe Tool used to query and display Microsoft Remote Procedure Call
(RPC) information.

dbgrpc.exe Process server used for remote debugging.

dumpchk.exe Tool used to validate a memory dump file.

gflags.exe Configuration tool used to enable and disable system instrumentation.
kd.exe Kernel mode debugger.

kdbgctrl.exe Tool used to control and configure a kernel mode debug connection.

kdsrv.exe Connection server used during kernel mode debugging.

kill.exe Console-based tool to terminate processes.

logger.exe Tool that logs the activity of a process (such as function calls).

logviewer.exe Tool used to view log files generated by logger.exe.

ntsd.exe Console-based user mode debugger. Virtually identical to CDB.

remote.exe Tool used to remotely control console programs.

rtlist.exe Remote process list viewer.

symchk.exe Tool used to validate symbol files or download symbol files from a symbol
server.

symstore.exe Tool used to create and maintain a symbol store.

tlist.exe Tool to list all running processes.

umdh.exe Tool used for memory leak detection.

windbg.exe User mode and kernel mode debugger with a graphical user interface.
Not surprisingly, the most important tool is the debugger itself.