XShare

Send files without an Internet connection

SHAREit

Transfer files from Android to other devices without cables

ES File Explorer

Complete file explorer for Android

Xender

Share files from your cell phone without using data

Files by Google

Google's new file manager for Android

Link2SD

Free storage space by moving applications to your SD card

Flashify

App to flash Android

MT Manager

A powerful file manager with an APK extractor

XAPK Installer

Extract and install files in XAPK format

UltData

Recover your apparently lost data

DiskDigger

Recover mistakenly deleted photos and videos on your phone

TWRP Manager

Make it easier to use TWRP

FX File Explorer

File Explorer for Android

Zapya

Share files even when you're offline

File Manager+

Comprehensive file browser for Android

SHAREit Lite

The lite version of SHAREit

Trello

Write down and remember your tasks and obligations in collaboration

GitHub

The app of the collaborative development platform

Habitica

Gamify your tasks to keep you motivated

My Apps Time

Monitor how much time you spend using your phone

Wunderlist

An excellent task manager

Asana

Organize your work and team projects

Notion

Complete app for improving user productivity

Todoist

Organize your pending tasks

Basecamp

Group work management platform

Flowdia

Design diagrams, schematics and graphs on your smartphone

Microsoft To-Do

Microsoft's task manager and daily planner

Microsoft Planner

Microsoft's task planner for Android

Mindomo

Organize your ideas with the help of mind maps

TickTick

Make all kinds of lists and organize your life and your telework

Google Tasks

Google's task manager