Workbox - The next version of sw-precache & sw-toolbox
Salad Room - Share text, links or files quickly between devices
Uppy - The next open source file uploader for web browsers
Envelop - Immersive virtual reality platform for the Windows desktop, use all your Windows apps in VR.
Uploader Window - Easy File Uploader for your websites and apps
Zapsnap - Temporary peer to peer screenshot sharing in your browser