Feedio - Feedio helps bloggers manage and grow their email and RSS subscribers.
Feedity - Create RSS feed for any webpage or podcast. Extract data and turn dynamic websites into spreadsheet or API. Feedity is an online RSS feed generator and podcast feed builder tool. Display feeds on website.
FeedPress - Custom hostname. You can customize FeedPress to use your own domain name to retain your website's brand. All you need to do to get started is simply register your domain name via your hostname management page.
Superfeedr - Real-time feed API - RSS and Atom over PubSubHubbub and XMPP. Superfeedr pushes RSS feeds in real-time for both publishers and subscribers, with open protocols and APIs.
Feed.exileed.com - This service transmits your favorite social networks by RSS.
follow.it - follow.it gets publishers more followers & recurring traffic, and provides a better reading experience for followers