Archos Video Player - pretty awesome Kodi alternative built for Android. Has all the main features without a lot of the bloat and supports background scanning.
TV App Repo - allows you to create banners for sideloaded apps and you can create shortcuts to web pages on the home screen or app row
PuppetMaster TV
Stremio
Droid Buddy for emulation
TVIrl, Live Channels
Plex.
TerraiumTV RetroBox WazHack