Get all Service Applications installed in SharePoint Farm or List all configured Service Applications installed in SharePoint Farm

1. Get all Service Applications configure in SharePoint Farm and save as text file in local server

... Answer is
Get-SPServiceApplication | Format-Table-wrap >C:\Service.txt

2. Get all Service Applications configure in SharePoint Farm and display in SharePoint Management Shell

... Answer is
Get-SPServiceInstance | Format-Table-Wrap.
Get-SPServiceInstance | Where {$_.Status -eq "Online"} | Format-Table-Wrap
Get-SPServiceInstance