There are so many SQL Server feature packs, and its hard to use search and see the whole list. I tried to compile that list here, with the latest copy at the top of each section. Let me know if I missed any :-) 

Generally, the packs are the same set of downloads each time (a bit repetitive), and each later release has patched files. Since there aren’t every-2-month cumulative updates like the rest of SQL for each of the feature packs (as far as I know) these separate downloads contain the more up to date (patched) files.

These links are English, but you can change the language in the url (displaylang=en) if needed. I will try to update the list when I hear of new feature pack releases.

 

Forwarding Links that “should” point to the latest feature pack in each product. (these are manually updated each time a new feature pack “patch” is released).

 

SQL Server 2012 Feature Packs:

SQL Server 2012 RTM - Mar 6, 2012 http://www.microsoft.com/download/en/details.aspx?id=29065

SQL Server 2008 R2 Feature Packs:

SQL Server 2008 R2-  SP2 - July 26, 2012 -  http://www.microsoft.com/en-us/download/details.aspx?id=30440

SQL Server 2008 R2-  SP1 - July 11, 2011 - http://www.microsoft.com/download/en/details.aspx?id=26728

SQL Server 2008 R2, Jun 2010 - http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=ceb4346f-657f-4d28-83f5-aae0c5c83d52

SQL Server 2008 Feature Packs:

SQL Server 2008 – SP3 – Oct 6, 2011 - http://www.microsoft.com/download/en/details.aspx?id=27596

SQL Server 2008 – SP2 – Sept 2010 - http://www.microsoft.com/downloads/en/details.aspx?FamilyID=1b2bd555-cb5b-47b9-88c7-3f89f3b43779

SQL Server 2008 – SP1 - Apr 2009 - http://www.microsoft.com/downloads/en/details.aspx?FamilyID=b33d2c78-1059-4ce2-b80d-2343c099bcb4&displaylang=en

SQL Server 2008 - Oct 2008 - http://www.microsoft.com/downloads/details.aspx?FamilyID=228de03f-3b5a-428a-923f-58a033d316e1&displaylang=en

SQL Server 2008 – RTM - Aug 2008 - http://www.microsoft.com/downloads/details.aspx?FamilyId=C6C3E9EF-BA29-4A43-8D69-A2BED18FE73C&displaylang=en

SQL Server 2005 Feature Packs:

SQL Server 2005- Dec 2008 - http://www.microsoft.com/downloads/details.aspx?FamilyID=536fd7d5-013f-49bc-9fc7-77dede4bb075&displaylang=en

SQL Server 2005 –SP2 - Feb 2007 - http://www.microsoft.com/downloads/details.aspx?FamilyID=50B97994-8453-4998-8226-FA42EC403D17&displaylang=en

SQL Server 2005 - Apr 2006 - http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=df0ba5aa-b4bd-4705-aa0a-b477ba72a9cb

SQL Server 2005 - Nov 2005 - http://www.microsoft.com/downloads/details.aspx?FamilyID=d09c1d60-a13c-4479-9b91-9e8b9d835cdc&DisplayLang=en