Get-ApplicationCommandDescription.ps1

<#
.DESCRIPTION
Get available application commands full path and description

.EXAMPLE
 Get-ApplicationCommandDescription.ps1 | ? Description -ne $null | Select-Object -First 10

Path                                                 Description
----                                                 -----------
C:\Windows\system32\AgentService.exe                 AgentService EXE
C:\Windows\system32\aitstatic.exe                    Application Impact Telemetry Static Analyzer
C:\Windows\system32\alg.exe                          アプリケーション層ゲートウェイ サービス
C:\Windows\system32\AppHostRegistrationVerifier.exe  アプリ URI ハンドラー登録検証ツール
C:\Windows\system32\appidcertstorecheck.exe          AppID Certificate Store Verification Task
C:\Windows\system32\appidpolicyconverter.exe         AppID Policy Converter Task
C:\Windows\system32\appidtel.exe                     Initializes Appid ManagedInstaller and Smartscreen Telemetry
C:\Windows\system32\ApplicationFrameHost.exe         Application Frame Host
C:\Windows\system32\ApplySettingsTemplateCatalog.exe ApplySettingsTemplateCatalog EXE
C:\Windows\system32\ApplyTrustOffline.exe            "ApplyTrustOffline.PROGRAM"
#>

Get-Command -Type Application | Get-Item -ErrorAction SilentlyContinue | %{
    [pscustomobject] @{
        Path = $_.FullName;
        Description = $_.VersionInfo.FileDescription;
    }
}