This name Waterfox is not as popular compared to other well known browsers,but this browser which is exclusively developed,updated and maintained for 64 bit operating systems.Now some guys are still confused with 32 bit and 64 bit versions of OS,here is a concise explanation to remove all those confusion and to understand the same concept in a better manner. A PC with 64 bit version of windows running on it can use more memory ie 4 GB or more RAM expansion is possible .But a computer with 32 bit OS installed on it can go only up-to 3.5 GB or