Looking for an alternative browser that doesn't leak memory nor my data, and is secure lately I have been using Firefox. It works rather well, but given my browsing habits (I never close down Firefox, I rarely reboot my macbook) I end up with an instance of Firefox that eats up 2/3 GB of RAM.

This is obviously unacceptable, and Firefox is well known to have memory leaks here and there. On the long run, "here and there" bogs down my machine and I need to close it down (when it doesn't crash) and restart it, and since I don't save things in the browsers (password, forms ecc) I need to re-login everywhere. :(

On the other hand I am concerned with Chrome and Safari, since I don't want history on my browser, nor want to provide data about a person (me) to third parties (via cookies, history, habits, tracking, whatever). So no Safari, no Chrome.

I don't know about Opera, but I never used it: I have always been curious, and I will download it today.

So here's the question: given all of the previous information, which is the browser safe, not-leaking-memory and that respects my privacy that you would advise me to use?

Thanks!
Use Safari or Chrome in Private Browsing or Incognito mode, and set Do Not Track.