narvod Has the advantage of being open source and only lists open source apps (since it uses the F-Droid repository), which has privacy benefits over Google play Store. It has a better interface than F-Droid, plus a system of labels, rankings and comments, that are lacking on the original F-Droid app. (personal experience: images, like logos, load way faster on G-droid than F-Droid for me)
Same repository as F-Droid, but adds more information (such as author, and other apps by said author) Github/Gitlab(?) rating and release cycle/rolling stages.
As of writing this (January 8, 2019) G-Droid is still BETA but very functional, I personally use it (along side F-Droid)
Positive comment • over 2 years ago • as an alternative to F-Droid