Hello and welcome.
They are all part of OS X, so you cannot delete/get rid of them. You can turn off their services though, to see if that helps.
sharingd - used by AirDrop, Handoff, Sharing, and Remote Disc
identityservicesd - used by Messages, App Store, Facebook, Twitter and other accounts
cloudpaird - used by iCloud
imagent - used by Messages and FaceTime
So, a few questions:
-How many applications are you running simultaneously?
-How much free space left on your startup drive?
-Are you running multiple resource-hungry apps like Photoshop, Final Cut, etc.?
-Do you have any third-party apps/utilities installed, such as MacKeeper, antivirus, Dropbox/Carbonite, or any menu bar apps?
-Do you restart your Mac on a regular basis?
-Do you have iCloud signed in and enabled? If so, are you using Keychain, Back to My Mac, Find My Mac?
-Do you use the Messages and FaceTime apps?
-Do you have you Facebook, Twitter, or other social media accounts setup in System Preferences... > Internet Accounts?
-Which sharing services are enabled in System Preferences... > Sharing - i.e. File, Printer, Internet, Bluetooth, etc.?
-Are you using any Bluetooth devices - mouse, keyboard, speakers, etc.?
As always, it is best to have a current Time Machine or other backup of your data before performing any troubleshooting suggestions.
You could try an
SMC and
NVRAM reset.
We'll see if we can determine the cause.
Thanks for your reply! To answer your questions:
On my 1TB SATA drive I have 933.9 GB free of 999.35 GB
The only apps I have are Google Earth, Garmin and Quicken WillMaker and none are used very often
I do restart my Mac
I am not signed in to iCloud
I don't use Messages or FaceTime Apps
I am registered on Facebook but never go there
The only sharing service I enabled was Printer
The mouse and keyboard are standard wireless Apple models