[kmitz]

Firefox has a serious performance issue. The difference with Chrome is really noticeable after only a few minutes of browsing. Less responsive, huge memory comsumption.

Try d3.js for instance, the rendering speed is horribly slow on Firefox.

I won't be switching to Firefox unless its performances get closer to Chrome's.

As a developper I wish I could contribute to make a better Firefox, but I'm pretty sure the technical level is too high for me.

[majewsky]

You can contribute to Servo, Mozilla's new rendering engine written in Rust (which should also fix those performance problems that you mention): https://github.com/servo/servo

Servo is a stand-alone project, but Mozilla will replace some big parts of Firefox with Servo code: https://wiki.mozilla.org/Quantum - So most contributions to Servo will end up in Firefox eventually.