How to identify which version of SharePoint you are using

It first seems obvious that you know what version of SharePoint you are using.

When I say version, I dont mean if you are using 2007 or 2010, I mean to say if you are using Express, Standard or Enterprise.

To find what version you are using in SharePoint 2007 (MOSS),

• Go to Central Administration
• Click Site Actions
• Click Site Settings
• Under Site Information you will see that version is installed

To find what version you are using in SharePoint 2010,

• Run SharePoint 2010 Management Shell (Power Shell)
• Run the command get-spfarm | Select Products

You will get all Products listed

For a complete list of Product GUID

SharePoint Foundation 2010: BEED1F75-C398-4447-AEF1-E66E1F0DF91E 

Search Server Express 2010: 1328E89E-7EC8-4F7E-809E-7E945796E511 

SharePoint Server 2010 Standard Trial: B2C0B444-3914-4ACB-A0B8-7CF50A8F7AA0 

SharePoint Server 2010 Standard: 3FDFBCC8-B3E4-4482-91FA-122C6432805C 

SharePoint Server 2010 Enterprise Trial: 88BED06D-8C6B-4E62-AB01-546D6005FE97 

SharePoint Server 2010 Enterprise: D5595F62-449B-4061-B0B2-0CBAD410BB51 

Search Server 2010 Trial: BC4C1C97-9013-4033-A0DD-9DC9E6D6C887 

Search Server 2010: 08460AA2-A176-442C-BDCA-26928704D80B 

Project Server 2010 Trial: 84902853-59F6-4B20-BC7C-DE4F419FEFAD 

Project Server 2010: ED21638F-97FF-4A65-AD9B-6889B93065E2 

Office Web Companions 2010: 926E4E17-087B-47D1-8BD7-91A394BC6196

Reference:

http://blogs.msdn.com/b/john_daskalakis/archive/2009/07/06/9819458.aspx

http://www.sharepointoverflow.com/questions/3886/how-to-detect-the-edition-of-sharepoint-2010-installed

http://msdn.microsoft.com/en-us/library/ff721969.aspx