.ATOMSVC File

File extension atomsvc is probably best known for its use for Atom Syndication file format, which is XML language used for web feeds.

It is usually used together with the Atom Publishing Protocol (AtomPub or APP), which is a simple HTTP-based protocol for creating and updating web resources.

The atomsvc file stores Atom service document stored in Atom Syndication file format used for example by Microsoft SQL Server.

MIME types:
application/atomsvc+xml

Files with atomsvc extension can be usually found documents saved in special web format called Atom Syndication. Used by AtomPub.

How to open:

You can import this format to programs that support Atom Syndication file type.These files are viewable in Microsoft Excel with PowerPivot addon for Excel. Since version 2013 this plugin is integrated in Excel.

How to convert:

Considering you can import these files to Excel, some sort of export to CSV to XLS is likely.