Quick Reboot

Create shortcuts to the operating system's reboot

Pressy

A button for all your phone's functions

Swapps!

Switch from one application to another very easily

GMD Gesture Control

Configure gesture control actions for your Android

Nova Launcher

Customize your Android with one of the best application launchers

Firefox OS

Mozilla's official launcher that emulates Firefox OS

AAAD

Install unofficial applications for Android Auto

Magus

Use your phone with 3D gestures

miUnlock

Blow or shake your smartphone to unlock it

Hovering Controls

Control your Android without touching the screen

XOS Launcher

Nice customizable launcher for Android

Apex Launcher

One of the most powerful launchers

utter!

Control your Android with voice commands

Air Swiper

Control your Android without touching the screen

Google BrailleBack

Adapt an Android for the blind

Twisty Launcher

Your application launcher specialized in gestures

Gallery Go

Google's lightweight gallery

QuickPic

Alternative to your default gallery

FilmBox

Scan your old negatives and turn them into photos

Samsung Gallery

Samsung's photo and video gallery

Google Photos

Google's mobile photo gallery

Gallery

Photo and video manager for Android

A+ Gallery

Organize and view your photos quickly

Amazon Photos

All your photos available online

Simple Gallery

Photo management, administration and editing tool

Galleryit

A comprehensive photo gallery with additional tools

Sony Album

Organize the pics on your Xperia

Comic Screen

Photo viewer for Android devices

FamilyAlbum

Organize photos and videos of your kids

Image Search

An image search tool for Android

Reverse Image Search

Three image search engines on a single app