FastBrowser FastBrowser is an application that relies on the WebKit engine. FastBrowser supported platforms:iOSFastBrowser architectures:32-bitLatest user agents:FastBrowser/1 CFNetwork/758.5.3 Darwin/15.6.0FastBrowser/1 CFNetwork/811.5.4 Darwin/16.7.0FastBrowser/1 CFNetwork/672.1.15 Darwin/14.0.0