.OPML

.OPML file extension

This is the basic program to work with .OPML extension

Snarfer

SnarferOPML File

Snarfer is an easy-to-use application which allows you to read, search and manage RSS feeds from any website on the Internet supporting the technology. And best of all, it doesn't cost you a penny. It is not a system resource hog and minutes after installation you will be aware of the usability and flexibility of the RSS Reader... (more)

The program works with the following extensions: rss, atom, opml and snarfer

.OPML extension is also supported by the following programs:

Internet Explorer

Internet ExplorerHumanConcepts Organization(7)

Browse the Web in a secure environment with HTML5 support.
BlogBridge

BlogBridgeReading List

Feed and blog aggregator designed for people who need lots of information.
Radio UserLand

Radio UserLandRadio UserLand OPML Document

An interesting solution to web publishing software.