Firefox is great when it comes to memory management. My Firefox instance is using 550 MB of RAM - and that's totally reasonable. I have some huge pages loaded,

Firefox is great when it comes to memory management. My Firefox instance is using 550 MB of RAM - and that's totally reasonable. I have some huge pages loaded, and around 20 of them, but Firefox remains very fast. If you want it to use less memory, open less pages or open pages that use less memory. Other browsers won't help as they'll use around the same amount. Chrome hides it's usage in separate processes and threads, by the way.