Free Twitter RSS Feed Generator - Convert Twitter lists, hashtags & searches into RSS feeds
Pine.blog - The social combo of an RSS feed reader and blogging app
RSS API - Convert & subscribe to RSS, ATOM and JSON-Feeds via API ⚡️ Get webhooks whenever there is a new entry in a Feed.
Feedly - The content you need to accelerate your research, marketing, and sales.
Feedbutler - Subscribe to your RSS feeds directly via email!
Winds - Open source & beautiful RSS reader