Total Management Support Tools

Active Directory Management Support Tools
Acldiag, ADSI Edit, Clonepr, Dsacls, Dsastat, Ldp, Movetree, Ntfrsutl, Repadmin, Replmon, Sdcheck, Setspn

Disk and Data Management Support Tools
connstat, devcon, dfsutil, dmdiag, dskprobe, ftonline, health_chk.cmd, Iologsum, rsdiag, rsdir, topchk

File and Folder Management Support Tools
bindiff, bitsadmin, cabarc, depends, diruse, efsinfo, filever, mszap, showaccs, spcheck, windiff

Internet Services Management Support Tools 
Httpcfg

Network Services Management Support Tools
browstat, dcdiag, dhcploc, dnscmd, dnslint, getsid, lasparse, netcap, netdiag, netdom, nltest, portqry

Performance Monitoring Support Tools
exctrlst, gflags, pviewer

Process and Service Management Support Tools
memsnap, poolmon

Security Management Support Tools
ksetup, ktpass, sidwalk, sidwkr, xcacls

Tools for Managing Domains and Forests
Adsiedit.exe, Csvde.exe Dcdiag.exe, Dcpol.msc, Dcpromo.exe, Domain.msc, Dompol.msc, Dsa.msc, Dsadd.exe, Dsget.exe, Dsmod.exe, Dsmove.exe, Dsquery.exe, Dsrm.exe
Active Directory Schema Tools – ADSI Edit, Csvde.exe, dsa.msc, ldifde, ntdsutil, schmmgmt.msc

Active Directory Replication Tools
Dssite.msc: Active Directory Sites and Services, Repadmin.exe: Repadmin, Ntdsutil.exe: Ntdsutil

DNS Support for Active Directory Tools and Settings
Dcdiag.exe, Dnscmd.exe, Dnslint.exe, Dnsmgmt.msc: DNS console, Eventvwr.exe: Event Viewer, Ipconfig.exe: Ipconfig, Netdiag.exe: Network Connectivity Tester, Netmon.exe: Network Monitor, Nslookup.exe: Nslookup

DHCP Tools
NETSH, Dhcploc

Global Catalog Tools
Adsiedit.msc: ADSI Edit, Dssite.msc: Active Directory Sites and Services, Repadmin.exe, Ldp.exe: Ldp

GPO Tools
gpupdate, gpmonitor, gpresult, dcgpofix, gpotool

Operations Masters Tools
Domain.msc, Dsa.msc, schmmgmt.msc, Ntdsutil.exe: Ntdsutil, Dsquery.exe: Dsquery

Tools for Managing Active Directory Functional Levels
Domain.msc, Dsa.msc, ADSIEdit, Ldp, Dcpromo.exe

Friends, Any other tools are there, please post here. Comments and suggestions are welcome.