CompressX is made possible thanks to the open source community.

FFmpeg

FFmpeg

pngquant

pngquant — lossy PNG compressor

Gifski

gifski — highest-quality GIF converter

Sparkle

https://github.com/sparkle-project/Sparkle

TelemetryClient

https://github.com/TelemetryDeck/SwiftClient

SettingsAccess

https://github.com/orchetect/SettingsAccess