FeedHQ is a simple, lightweight web-based feed reader. Main features: User-facing features RSS and ATOM support Grouping by categories Awesome pagination and intelligent browsing Great readability on all screen sizes (smatphones, tablets and desktops) Mobile-friendly, retina-ready Reading list management with Instapaper, Readability or Read It Later support Filter out already read entries and duplicates Hides images/media by default (and therefore filters ads and tracking stuff) Multiple user support Control on entries' time to live (days, weeks, months or forever) OPML import Syntax highlighting, awesome for reading tech blogs Keyboard navigation Developer- / Sysadmin-facing features Nice with web servers, uses ETag and Last-Modified HTTP headers Handles HTTP status codes nicely (permanent redirects, gone, not-modified…) Exponential backoff support PubSubHubbub support