Finally MS release a *better* sos.dll extension for WinDbg (psscor2.dll), which has many more features. One of my favorite feature is “displaying callstacks with line infos”!

Also it has a good “!Analysis” command for dump-files.

The output of “!Help” is:

-------------------------------------------------------------------------------
PSSCOR is a debugger extension DLL designed to aid in the debugging of managed
programs. Functions are listed by category, then roughly in order of
importance. Shortcut names for popular functions are listed in parenthesis.
Type "!help " for detailed info on that function. 

Object Inspection                  Examining code and stacks
-----------------------------      -----------------------------
DumpObj (do)                       Threads
DumpArray (da)                     CLRStack
DumpStackObjects (dso)             IP2MD
DumpAllExceptions (dae)            BPMD
DumpHeap                           U
DumpVC                             DumpStack
GCRoot                             EEStack
ObjSize                            GCInfo
FinalizeQueue                      EHInfo
PrintException (pe)                COMState
TraverseHeap
DumpField (df)
DumpDynamicAssemblies (dda)
GCRef
DumpColumnNames (dcn)
DumpRequestQueues
DumpUMService

Examining CLR data structures      Diagnostic Utilities
-----------------------------      -----------------------------
DumpDomain                         VerifyHeap
EEHeap                             DumpLog
Name2EE                            FindAppDomain
SyncBlk                            SaveModule
DumpThreadConfig (dtc)             SaveAllModules (sam)
DumpMT                             GCHandles
DumpClass                          GCHandleLeaks
DumpMD                             VMMap
Token2EE                           VMStat
EEVersion                          ProcInfo 
DumpModule                         StopOnException (soe)
ThreadPool                         MinidumpMode 
DumpHttpRuntime                    FindDebugTrue
DumpIL                             FindDebugModules
PrintDateTime                      Analysis
DumpDataTables                     CLRUsage
DumpAssembly                       CheckCurrentException (cce)
RCWCleanupList                     CurrentExceptionName (cen)
PrintIPAddress                     VerifyObj
DumpHttpContext                    HeapStat
ASPXPages                          GCWhere
DumpASPNETCache (dac)              ListNearObj (lno)
DumpSig
DumpMethodSig                      Other
DumpRuntimeTypes                   -----------------------------
ConvertVTDateToDate (cvtdd)        FAQ
ConvertTicksToDate (ctd)
DumpRequestTable
DumpHistoryTable
DumpBuckets
GetWorkItems
DumpXmlDocument (dxd)
DumpCollection (dc)

Examining the GC history
-----------------------------
HistInit
HistStats
HistRoot
HistObj
HistObjFind
HistClear