|RSS Compendium - RSS Servers|
This list will, of course, never be complete. If I'm missing anything please let me know.
Attensa Feed Server - Sitting behind your firewall, the Attensa Feed Server makes it easy to create a secure, scalable enterprise-wide web feed environment enabling individuals, workgroups, departments and the entire organization to subscribe to internal and external feeds and receive the information in Microsoft Outlook, in their browser or on a mobile device. Attensa's unique AttentionStream synchronization ties the server, desktop, web and mobile RSS reader clients together so articles read, filed and deleted are continuously up to date
NewsGator Enterprise Server (NGES) - allows you to automatically deliver relevant content to groups and users directly via Microsoft OutlookŪ, portals, intranets, desktop applications and mobile devices. You can act on behalf of users and groups and subscribe them to RSS feeds