There are 2 repositories under fever-api topic.
Google Reader inspired self-hosted RSS reader written in VueJS with an Express NodeJS backend. RSSMonster is compatible with the Fever API.
TinyTiny RSS Fever API Plugin
Tiny Tiny RSS Fever API Plugin
Web RSS aggregator and reader compatible with the Fever API
Objects to work with RSS feeds and the Fever API
A QPKG (QNAP package) wrapper for Coldsweat.
a rss reader use fever api, based by electron 7.1.x+vue 2.x
Tiny-Tiny-RSS starred articles to wallabag