List all installed features on the farm It’s really straight forward using the Get-SPFeature command to return all installed features:

1 Get-SPFeature | Sort -Property DisplayName

By feature ID,

1 Get-SPFeature | Sort -Property Id

By feature display name alphabetically and grouped by scope,

1 Get-SPFeature | Sort -Property Scope,DisplayName | FT -GroupBy Scope DisplayName,Id

And to write this to a file to allow for viewing in Notepad, Excel etc,

1 Get-SPFeature | Sort -Property Scope,DisplayName | FT -GroupBy Scope DisplayName,Id > c:\AllInstalledFeatures.txt

List all activated site scoped features Especially in the case of hidden features it’s sometimes necessary to track down if a feature is active on a site collection. Here’s a quick way of seeing which features are activated for an SPSite:

1 Get-SPFeature -Site http://sitecollectionurl | Sort DisplayName | FT DisplayName,Id

List all activated web scoped features And only slightly modified from the Get-Help Get-SPFeature -examples text, here is a command to list all web activated featres for a site collection:

1 Get-SPSite http://sitecollectionurl | Get-SPWeb -Limit ALL | %{ Get-SPFeature -Web $_ } | Sort DisplayName -Unique | FT DisplayName,Id