CLAP – An open source alternative to VST2/3

CLAP is nearing a major milestone. It has been embraced by U-He and Bitwig, and now has support in JUCE.

https://www.kvraudio.com/forum/viewtopic.php?f=31&t=574861

Much of this work has been driven by Steinberg's bullheaded forcing of VST3 on the industry. No new VST2 licenses can be acquired. VST2 support will be dropped from Cubase/Nuendo. Meanwhile, VST3 is still a mess. Developers hate it. It can't consume MIDI directly. It's needlessly complex and incompatible with VST2 in significant ways requiring extensive workarounds.

As for LV2, it has a serious case of NIH, and an inability to provide the tools plugin developers need because it is "not the LV2 way."