The latest version of geeksn0w is 2.9. This is a semi untethered jailbreak which works only with iPhone 4 and 4S. Semi untethered jailbreaks are not much comfortable like untethered jailbreaks. Cydia will be disappear when you reboot your iPhone and you must have a tethered boot using initial jailbreak tool (geeksnow) to get the Cydia icon back at home screen. Currently this is the only jailbreak available for iOS 7.1 - 7.1.1. MAC version is still in beta but you can run it at CLI (command line interface) if you don't have a windows PC.
You can download geeksnow jailbreak from following links.