WITM provides a web interface to access Mathematica through any browser using HTTP protocol. It can be accessed through wired link, WiFi or Bluetooth. The software is called Web Interface to Mathematica (WITM).
This means that you can use it from basically anywhere, as long as you have internet access. The HTTP protocol is used, so you can connect to it via a wired link, WiFi, Bluetooth, or anything similar.
Overall, WITM offers a convenient way to use Mathematica without needing to install the software on every device you use. If you want to use Mathematica on-the-go from a device that doesn't have it installed, this is definitely worth checking out.
Version 0.75: N/A