Wallpaper Engine - Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
Live GIF - Convert live photos to GIF
ScreenPlay - Open-source and cross-platform Wallpaper, Widgets and AppDrawer app.
GIF Brewery by Gfycat - Create stunning GIFs from videos & screen recording for free
Lively Wallpaper - What is it? Lively is a Free and Open-Source Software (FOSS) for animated desktop wallpapers.
DeskScapes - DeskScapes is a program that allows users to have animated wallpaper on their Windows desktop.