TheRun command is used to directly open an application or document whose path is known. 
For using Run commands just open "Run Application" by pressing "Window Button + R"

Run Commands for Accessories:-
 Calculator = calc 
Command Prompt = cmd 
Microsoft Paint = mspaint or mspaint.exe On Screen Keyboard = osk Character Map = charmap 
System Information = msinfo32 
Connect to a Network Projector = netproj Connect to a Projector = displayswitch Sticky Note = stikynot 
Windows Explorer = explorer or explorer.exe 
Wordpad = write 
Presentation Settings = presentationsettings 
Remote Desktop Connection = mstsc Snipping Tool = snippingtool 
Ease of Access Center = utilman Magnifier = magnify 
Narrator = Narrator 
Internet Explorer = iexplore 
Disk Cleanup Utility = cleanmgr 
System Restore = rstrui 
Windows Media Player = wmplayer Sound Recorder = soundrecorder
 Disk Defragment User Interface = dfrgui 
* Run Commands for Computer Management :- 
Services = services.msc 
Disk Management = diskmgmt.msc Device Manager = devmgmt.msc Computer Management = compmgmt.msc 
Local Users and Groups = lusrmgr.msc Performance Monitor = perfmon.msc Event Viewer = eventvwr.msc 
Shared Folders/MMC = fsmgmt.msc Task Scheduler = control schedtasks 
* Run Commands for Administrative Tools :- 
Problems Steps Recorder = psr 
Registry Editor = regedit or regedt32 System Configuration Utility = msconfig Direct X Troubleshooter = dxdiag Group Policy Editor = gpedit.msc 
Add Hardware Wizard = hdwwiz.cpl
Local Security Settings = secpol.msc Resoure Monitor = resmon 
Windows System Security Tool = syskey Windows Version = winver 
Windows Firewall with Advanced Security = wf.msc 
*Run Commands for Control Panel:- 
Control Panel = control 
Windows Firewall = firewall.cpl 
Create a System Repair disc = recdisc Date and Time Properties = timedate.cpl Devices and Printers = control printers Personalization = control desktop 
Screen Resolution = desk.cpl 
Folders Options = control folders 
Fonts = control fonts 
Internet Properties = inetcpl.cpl 
Keyboard = control keyboard 
Mouse = control mouse or main.cpl Network Connections = ncpa.cpl 
Phone and Modem Options = telephon.cpl 
Sound = mmsys.cpl 
Volume Mixer = sndvol 
System Properties = sysdm.cpl