FireBreath is a cross-platform plugin architecture, targeting NPAPI browsers on Windows, Mac OS X, and Linux (Gecko/Firefox, Google Chrome, Apple Safari, Opera) and ActiveX Control hosts, including all versions of Microsoft Internet Explorer. It is designed to make it easier to get started than even doing an NPAPI plugin by hand. A Python-based "fbgen" tool generates a template skeleton and makes it possible to have a functioning browser plugin up and running in 20 minutes.
FirefoxSync for DolphinHD is a plugin for DolphinHD to keep information such as passwords, bookmarks, tabs, and history synchronized between you desktop Web browser and you mobile Web browser by using Mozilla Weave/Firefox Sync. It lets you access open tabs from the desktop on Dolphin and the other way around. It is not produced by the Mozilla Foundation.