Formats supported:

Rss
Atom
Rdf
PubMed
SimpleMachines

Integration:

Feedly (Native API, Two-way)
Inoreader (Native API, Two-way)
Pocket (Native API, Two-way)
Reddit (Native API, Single-way)
Tumblr (Native API, Single-way)

Media supported:

HTML5
Youtube (Official embed client)
DailyMotion
SoundCloud
Vimeo
TikTok embed(Unofficial - AYOR)
Facebook
Instagram (Buggy, improvement required)
Tumblr
Eagle platform
Rutube
Vk
Yandex

Filters:

Plain text/Java regex
Can apply to all/single group/group of feeds

Xml parser:

Fast xml processing
Automatic error correction (if possible)
Non-utf8 encoding support (if charset declared somewhere)

Translations:

English
Russian
Spanish
French
Norsk bokmål
Bahasa Indonesian