Memory Fox is a Mozilla Firefox add-on that recovers leaked memory made by your Firefox browser as you surf the internet. If you install this add-on, crashing of your Firefox browser due to high memory usage will be minimized.
According to a Digg user, TheEngineer2008, “With this add-on, memory usage stays below 200 MB, even with 20 tabs or more open.” (source)
If you experience crashing or hanging of your Firefox browser while surfing the internet, try this add-on and see the difference.
Install Memory Fox here. After installation, you will be required to restart Firefox. Restart it and click Tools > Memory Fox > Activate Memory Fox to enable it.