Apps similar to Discord Reactive Images include FaceRig. It's paid, but Opentrack is free. Other options are VTube Studio and VSeeFace. In total there are four Face Filter Apps like Discord Reactive Images for Windows, Mac, Linux, Android and iPhone.
FaceRig is a program that aims to enable anyone with a webcam to digitally embody awesome characters. The output can be recorded as a movie or streamed to Skype, Twitch, Hangouts or any service that traditionally uses a webcam in real time.
Romania
EU
VTube Studio is the tool of choice for any Live2D VTuber! With a wide variety of features, it has never been easier to connect with your viewers!! VTube Studio can be used directly with your webcam on any Windows PC or Mac.
GermanyEU
Opentrack is an application dedicated to tracking user's head movements and relaying the information to games and flight simulation software.
United Kingdom
VSeeFace is a free, highly configurable face and hand tracking VRM and VSFAvatar avatar puppeteering program for virtual youtubers with a focus on robust tracking and high image quality.
