Ask HN: Native Development Proxy for Mac

When developing API-Heavy apps I am using a mix of Charles proxy and Burp Suite to listen on and manipulate HTTP calls. Both do the job very well and are really powerful in my opinion. While not missing anything feature-wise both are Java-Based and seem to negatively affect my System stability, are rather slow and quite resource hogs even on my reasonably powerful machine. I tried to find some native implementation that would let me listen on HTTP from e.g the Browser, Simulator and Devices, let me throttle the connection and manipulate requests / responses but did not have any success. Is anyone here aware of an app that roughly does what I outlined while being not Java based? Price is not so much an issue.