Acquired and shut down

Humane AI Pin The $699 phone killer that HP switched off ten months in 2024–2025 Gadgets & Hardware Google Domains Google's no-nonsense domain registrar, out of beta for one year before it was sold to Squarespace 2014–2023 Online Services Houseparty The lockdown living room, closed by Fortnite's owner 2016–2021 Mobile Apps Periscope Live from anywhere, until the money ran out 2015–2021 Video & Streaming Jet.com Walmart paid $3 billion, then switched it off 2015–2020 E-commerce & Retail Wunderlist The to-do app Microsoft bought to bury 2010–2020 Mobile Apps Hipmunk The flight search that sorted by agony, bought by a corporate expense company and switched off while its founders were trying to buy it back 2010–2020 Online Services Musical.ly The lip-sync app that became TikTok 2014–2018 Video & Streaming Klout The site that scored your online influence from 1 to 100, sold for $200 million and switched off the week GDPR arrived 2008–2018 Social Networks Storify The tool newsrooms used to turn tweets into stories, bought twice and closed by Adobe in 2018, taking thousands of embedded stories with it 2010–2018 Online Services Nextbit Robin The cloud-first Android phone from Kickstarter, bought by Razer and cut off from its cloud a year later 2015–2018 Phones & Tablets Half.com It once bought a whole town for its name 2000–2017 E-commerce & Retail Parse 500,000 apps had their back end switched off 2011–2017 Developer Tools Vine Six seconds, looped forever 2013–2017 Video & Streaming Sunrise Calendar The calendar app everyone recommended, bought by Microsoft for about $100 million and dismantled into Outlook 2013–2016 Mobile Apps Skype Qik The live phone-video pioneer Skype paid $150 million for, shut down, relaunched as a messaging app, and shut down again 2007–2016 Mobile Apps Mailbox The email app with the famous reservation queue, bought by Dropbox for about $100 million and shut down three years later 2013–2016 Email & Groups Songza Playlists for the moment you were in, picked by people rather than an algorithm, until Google bought it and melted it into Play Music 2011–2016 Music Streaming Beats Music Dr. Dre and Jimmy Iovine's curated streaming service, bought by Apple after four months and folded into Apple Music 2014–2015 Music Streaming Blip Where web series lived before YouTube channels, bought by Maker Studios and deleted a year later 2005–2015 Video & Streaming FriendFeed The feed that taught Facebook to Like 2007–2015 Social Networks Readmill The Berlin e-book reader that put your highlights in the margin for other people to see, bought by Dropbox for its team and closed within three months 2011–2014 Mobile Apps Bump Tap two phones together to swap contacts: 125 million downloads, a Google acquisition, and a shutdown three months later 2009–2014 Mobile Apps Sparrow The mail app people happily paid for, bought by Google and left to rot in the App Store 2011–2013 Email & Groups Astrid The to-do app with the friendly squid, four million users, bought by Yahoo and closed 96 days later 2008–2013 Mobile Apps Posterous Blogging by sending an email, bought and switched off 2008–2013 Blogging & Web Publishing Google Video Google's own YouTube, made redundant the day Google bought YouTube 2005–2012 Video & Streaming Meebo Every messenger, in one browser tab 2005–2012 Messengers Picnik The photo editor in your browser, bought by Google and closed two years later 2007–2012 Photo Sharing Gowalla The prettier check-in app from Austin that lost the SXSW war to Foursquare, was bought by Facebook for its team and switched off three months later 2009–2012 Mobile Apps Jaiku A month older than Twitter, bought by Google, shelved 2006–2012 Social Networks Loopt Sam Altman's first company: see where your friends are, years before phones could 2006–2012 Mobile Apps Aardvark Ask a question over instant messenger and a friend of a friend who actually knew the answer wrote back within minutes, until Google bought it and put it on the spring-cleaning list 2009–2011 Search Engines & Directories Revver The first video site that paid the people who made the videos, sold to a company that stopped paying them 2005–2011 Video & Streaming Palm Pre The comeback phone that invented the card interface and could not save Palm 2009–2011 Phones & Tablets T-Mobile Sidekick The swivel-screen phone whose life lived on Danger's servers, and died with them 2002–2011 Phones & Tablets Flock The social web browser: Firefox, then Chromium, with Facebook and Twitter in the sidebar, bought by Zynga and closed in 2011 2005–2011 Web Browsers Dodgeball Text your location to a short code and find your friends nearby: the check-in before Foursquare, bought by Google in 2005 and abandoned in 2009 2003–2009 Social Networks Pownce Eighteen months, and invitations sold on eBay 2007–2008 Social Networks Prodigy The IBM and Sears online service with the blue screens and the ads at the bottom, two million subscribers before the web, sold and sold again 1988–2001 Online Services Infoseek One of the first big web search engines, Netscape's default for a year, bought by Disney and buried inside Go.com 1995–2001 Search Engines & Directories