You are downloading the Tether-X XAP file v220.127.116.11 for Windows Phone. Tether-X is a free and useful Productivity app: Tether-X helps you turn your phone into a Wi-Fi hotspot. By configuring a few settings in your computer, you can take advantage of the big screen to ... You can now download the offline XAP file to install & try it.
Download Locations for Tether-X 18.104.22.168 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Tether-X XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.