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Firefox portable for mac is now available. You can directly download Firefox portable for mac below link. Firefox is basically a web browser. The newest version of our favorite open source web browser, Mozilla Firefox 3, offers dozens of new features and fixes, but only a handful will make the most dramatic difference in your everyday browsing.
A portable application (portable app), sometimes also called standalone, is a program designed to read and write its configuration settings into an accessible folder in the computer, usually in the folder where the portable application can be found. This makes it easier to transfer the program with the user’s preferences and data between different computers. A program that doesn’t have any configuration options can also be a portable application.
Portable applications can be stored on any data storage device, including internal mass storage, a file share, cloud storage or external storage such as USB drives and floppy disks—storing its program files and any configuration information and data on the storage medium alone. If no configuration information is required a portable program can be run from read-only storage such as CD-ROMs and DVD-ROMs. Some applications are available in both installable and portable versions.
Firefox creates seperate process for tabs. The default maximum no.of processes is set to 4. But you change it from 1-7 as you need. Note that if you choose more number of processes, more RAM will be used. So unless you are a heavy user and has more RAM don’t change it. Anyway to change no. of content processes, in Firefox open Options and under Performance settings, uncheck Recommended settings option and change the Content process limit.
This article describes problems where Firefox cannot load websites but other Web browsers (such as Internet ExplorerInternet Explorer or Microsoft EdgeSafariEpiphany on Gnome or Konqueror on KDE) can. When this happens, Firefox may show a Server not found or Unable to connect error message.
If you were able to load websites until you updated Firefox or until your Internet security software was updated, reconfigured or a new one was added, your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) is likely preventing Firefox from connecting to the Internet.
In general, you should make sure your Internet security software is up-to-date and remove Firefox from your program's list of trusted or recognized programs, then add it back. For instructions on how to configure some programs, see the Configure firewalls so that Firefox can access the Internet article.
If you connect to the Internet through a proxy server that is having connection problems, you will not be able to load websites. To check your connection settings in Firefox:
If you find that changes you make to your Firefox connection settings are not remembered when you restart Firefox, see How to fix preferences that won't save.
Firefox supports IPv6 by default, which may cause connection problems on certain systems. To disable IPv6 in Firefox:
Firefox attempts to speed up loading new websites by using DNS Prefetching, which can cause page load errors with some system configurations. To disable DNS Prefetching:
If you find that Firefox can load some websites but not others, first clear your Firefox cookies and cache:
If clearing your cookies and cache did not enable you to load the websites that did not work in Firefox, you should check your computer for malware. Certain types of malware are known to target Firefox and can prevent it from loading various websites:
A Firefox extension could be causing the issue, especially the ones that have network access and/or those that rely on manipulating webpage content. Try disabling your extensions in the Add-ons Manager one by one and then reload the page. See Disable or remove Add-ons and Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems for more information.
Based on information from Error loading websites (mozillaZine KB)