Firefox Electrolysis

The goal of the current Electrolysis project ("e10s" for short) is to render and execute web related content in a single background 'content' process which communicates with the main Firefox process via various ipdl protocols. The two major advantages of this model are security and performance. Security improvements are accomplished through sandboxing, performance improvements are born out of the fact that multiple processes better leverage available client computing power.

В nightly версиях по умолчанию включено разделение firefox-процессов, т.н. Electrolysis project. К сожалению, это сломает большинство ваших расширений, но есть специальный сайт, который позволяет отслеживать процесс исправления расширений.