System

Greentooth
Automatic Bluetooth disabler

Chairlock
Complete onboard permissions explorer & summary

SysLog
Capture log files

apps_Packages Info - Updated ApplicationsInfos (²
Updated ApplicationsInfos with colors & mini-tags (and basic fixes)

LineageOS updater shortcut
App icon for the LineageOS updater

T4 Launcher
simple launcher with predictive text filtering

Lock
Lock the screen

Epistolaire
SMS and MMS backup

Volume Control
Simple volume control application without unnecessary features

Batch Uninstaller
Uninstall multiple applications at once

Birthday Calendar
Creates birthday events from all other calendar's data

Wrong PIN Shutdown
Shutdown device on wrong PIN

Calculator++
Scientific calculator with sleek interface and powerful capabilities

Duorem
Wake up or shutdown remote computer from your phone/tablet.

Simple Alarm Clock
Improved alarm clock

Red Moon
Screen filter for night time phone use

BusyBox
Install a compact but feature-complete version of basic Linux command line utils

Power Button Tile
Add up to 3 quick settings tiles to the quick settings layout

LDAP Sync
Sync your contacts with LDAP

Ghost Commander
Dual-panel file manager

DroidTR IME
DroidTR IME (Turkish F/Q keyboard)

Torchie
Access LED flashlight from the Volume buttons

Plug Off Airplane
Uses root to disable Airplane Mode when the device is plugged in via USB

NeoLinker
Linkup sub-engine, select browser to open link

LTE Cleaner
System cleaner

Launch on Boot
Launches an application when the device boots

DigiLux
Control your phone's brightness with your fingerprint sensor

G-Droid
An alternative client app to browse the F-Droid repository

SleepyWifi
Disables the Wi-Fi when the phone is in sleep mode

Call Recorder
Simple call recorder, no ads, open-source