Did anyone read up on it ? maybe there is another alternative ?

Deliver software on multiple platforms
JUCE is the most widely used framework for audio application and plug-in development. It is an open source C++ codebase that can be used to create standalone software on Windows, macOS, Linux, iOS and Android, as well as VST, VST3, AU, AUv3, AAX and LV2 plug-ins.

JUCE allows developers to focus on the most valuable parts of their software by taking care of the differences between operating systems (both desktop and mobile) and plug-in formats. With JUCE’s library of digital audio processing (DSP) building blocks you can quickly prototype and release native applications and plug-ins with a consistent user experience across all supported platforms. Using JUCE also future-proofs your products against operating system and plug-in host updates.

Audio Software & Plug-in Compatibility
JUCE makes it easy to create both standalone audio applications or plug-ins that can be loaded inside digital audio workstations (DAWs) like Logic, Live, Pro Tools, FL Studio or Cubase. A single JUCE project can be used to create VST, VST3, AU, AUv3, AAX and LV2 plug-ins from the same source code, and also provides the functionality required to host these plug-in formats in your own software.

Companies Using JUCE
A few of the many companies using JUCE:

Adobe AMS-Neve Antares Arturia Audio Modeling AudioKinetic

Avid Bose Bytedance Corsair Cycling74 Dolby Laboratories

Eventide Fender Focusrite Genelec Google

Harman Harrison InMusic Izotope Korg

Krotos LANDR MathWorks Meta Metric Halo

Moog Music Tribe Naughtydog Netflix PG (PLUGIN Only)

Pioneer DJ reFX Audio Software Roland ROLI

Sennheiser Serato Sonnox SoundRadix Spitfire

Splice SSL Steinberg Syng THX Tracktion

Universal Audio UVI Valhalla DSP Waves

Wolfram Research, Inc. Yamaha