F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
From version F-Droid 1.4:
1.4 (2018-09-12)
polish up new "Versions" list and other UI fixes
1.4-alpha1 (2018-08-30)
huge overhaul of the "Versions" list in the App Details screen, and many other UI improvements, thanks to new contributor @wsdfhjxc

fixes to allow keyboard/d-pad navigation in more places, thanks to new contributor @doeffinger

1.4-alpha0 (2018-08-17)
show "Open" button when media is installed and viewable

retry index downloads from mirrors

add Share button to "Installed Apps" to export CSV list

add clickable list of APKs to the swap HTML index page
Variant
Arch
Version
DPI
(Android 4.0+)
Latest: 1.4 on September 16, 2018
All versions
September 16, 2018
August 31, 2018
August 20, 2018
August 11, 2018
August 3, 2018
July 23, 2018
July 19, 2018
July 3, 2018
June 28, 2018
June 18, 2018