Jingler is (going to be) a flexible, modular synthesizer with a primary focus on making music for small demoscene productions - similar in spirit to popular modular demoscene synthesizers such as 4klang and 64klang.
It is a goal of Jingler to be more versatile and easier to use than 4klang while achieving similar or even smaller file sizes.
Jingler is still early in its development. Some ideas for its features and design can be read in the design document.