Flock是一個基於Mozilla Firefox的網頁瀏覽器，以及其開發企業的名稱。Flock 使用Gecko排版引擎，其特點為整合多種虛擬社群服務，如相片上傳與閱覽、RSS閱讀器、Blog發佈及編輯工具和社會性書籤等。
Flock is a free web browser that makes it easier than ever to share photos, stay up-to-date with news from your favorite sites, and search the Web.
Flock is built on fast and secure Mozilla technologies. Share photos, get your news, blog freely, and search your world with Flock. Flock makes it easier than ever for you to connect with your friends. Download the first beta and let us know what you think.
When you use Flock to do something cool, you're a Flockstar. It could be anything you want to share with your friends or the world: a photo of your new ride or a song your band just recorded.