open-loop-studio - Max/msp patches for live sampling, looping, and buffer playback manipulation. Will eventually be re-implemented in C++ with JUCE.
The price point for a nice loop pedal sits around $300. Here is a set of abstractions and examples that works in the same way, and provides a ton of extensible features including precise control of sample parameters, as well as the full flexibility of the max environment.
Realistically, this project is much broader than creating a loop pedal clone. The ultimate goal is to have a flexible and extensible live sampling performance environment, which can be mapped to any controller or set of controllers.
Much more to come, stay tuned!