Died in 2021
9 projects
Loon
Alphabet's internet balloons, nine years in the stratosphere and one commercial customer, grounded in 2021
2013–2021
Online Services
Google Cardboard
Virtual reality from a folded box and a phone, ten million viewers, then quietly shelved
2014–2021
VR & AR
Microsoft Edge Legacy
Microsoft's fresh start that lasted one engine
2015–2021
Web Browsers
Periscope
Live from anywhere, until the money ran out
2015–2021
Video & Streaming
Yahoo Answers
The internet's strangest Q&A community
2005–2021
Reference & Learning
Twitter Fleets
Twitter's disappearing posts, built to make quiet users braver, dead in under nine months
2020–2021
Social Networks
Houseparty
The lockdown living room, closed by Fortnite's owner
2016–2021
Mobile Apps
Microsoft Silverlight
The Flash rival that outlived its purpose
2007–2021
Web Technologies & Tools
Google Toolbar
The search box in the browser, with the PageRank meter, from Internet Explorer 5 to a quiet death in 2021
2000–2021
Web Technologies & Tools