-zilla is an English slang suffix, a libfix back-formation derived from the English name of the Japanese movie monster Godzilla. It is popular for the names of software and websites. It is also found often in popular culture to imply some form of excess, denoting the monster-like qualities of Godzilla.

Mozilla is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, publishes and supports Mozilla products, thereby promoting exclusively free software and open standards, with only minor exceptions. The community is supported institutionally by the non-profit Mozilla Foundation and its tax-paying subsidiary, the Mozilla Corporation.