Alternative to Google Wallpapers

Works on MicroG?

Works fine

Open Source

Mysplash

A lightweight client for Unsplash

Muzei

Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art. And much more!

Aurora Wallpaper

Aurora Walls is a client for Wallhaven.cc, that hosts more than 200K wallpapers

Resplash

Resplash is powered by Unsplash. This Material Design app lets you browse 100000+ high-res photos, check their Exif info, download them in RAW format, rate them, set them as wallpaper straight from within the app, view user profiles, curated collections, photo stats and more.

Other

Closed Source

Zedge MOD

Personalize your phone with a HD wallpaper, live wallpaper, alarm sound or ringtone with ease. ZEDGE™ offers an extensive catalog with millions of free backgrounds, live wallpapers, stickers, ringtones, alarm sounds & notification sounds for your Android phone.

⚠ Privacy Alert: The mod tries to remove all possible trackers, but it is certainly not totally successful.