Microsoft Xim
Once again Microsoft being pretty low-key with the fact that this is a Microsoft product just like they did with Sway. [1]  * No mention in the title bar or above the fold.
  * First mention of Microsoft is in the footer.
  * iOS App Store and Google Play links are before the Window Phone Store.
  * Mockups include iOS looking device and Androidy Device (however the largest one might be a Windows Phone?)

[1] https://www.sway.com *Although they have now added this annoying Microsoft Toolbar dropdown-thingy which wasn't there on launch day.  Interesting.