You are downloading the Collaborate APPX file v220.127.116.11 for Windows Phone. Collaborate is a free and useful Productivity app: Bring your white boarding experience to the digital world using Collaborate, a Microsoft Garage project. Host or join collaboration sessions on ... You can now download the offline APPX file to install & try it.
Download Locations for Collaborate 18.104.22.168 APPX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Collaborate APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.