Freebies galore;
https://www.kvraudio.com/kvr-developer-challenge/2026/
"Welcome to the KVR Developer Challenge 2026, the tenth free-for-all audio plugin / audio application / soundware design event, and 20 years since the first one in 2006.
The “KVR Developer Challenge” is for anyone who develops Audio Plugins or Applications and Soundware. The challenge is to create and release a brand new free audio plugin, application or sound library / pack / set that will benefit the community at large.
Creativity is key, it can be as simple or as complex as you want - KVR members will vote on the entries and pick the eventual winner using whatever criteria they choose to."