Adobe Flash Player was, for most of two decades, how the web moved. First released on January 1, 1996 as FutureSplash Player, passed to Macromedia and then to Adobe with its December 2005 acquisition, Flash became the near-universal browser plugin for animation, games, and video — and on December 31, 2020 Adobe stopped supporting it, then activated a kill-switch that blocked Flash content from running on January 12, 2021. After twenty-four years, the runtime that built an era of the web was deliberately set to expire on a date, like milk.
At its height Flash was effectively ambient. Adobe claimed the player reached the neighborhood of a billion internet-connected desktops, present on essentially every browser that mattered; if a site had an intro animation, a banner ad, an embedded cartoon, a casual game, or — crucially — streaming video, it almost certainly ran on Flash. It powered Newgrounds, Homestar Runner, an entire generation of browser games, and the early years of YouTube. For animators and hobbyist developers it was the most accessible creative runtime ever shipped: draw, script a little ActionScript, export, embed.
What killed Flash was not a competitor product but a convergence of structural forces it could not answer. It carried chronic, well-documented security vulnerabilities that made it one of the most reliably exploited pieces of software on any machine. It was a CPU-hungry, battery-draining plugin built for the mouse-and-desktop world precisely as computing moved to touch and mobile — and in April 2010 Steve Jobs published “Thoughts on Flash,” refusing it on the iPhone and iPad and citing openness, security, performance, and battery life. Meanwhile HTML5, WebGL, and later WebAssembly absorbed, in the open browser itself, nearly everything Flash had done. Adobe announced the end on July 25, 2017, with Apple, Google, Microsoft, Mozilla, and Facebook coordinating the wind-down.
Flash’s death was unusually orderly and unusually total — a runtime, not a service, so there was no server to leave running. What it endangered was the content: tens of thousands of games and animations that existed only as Flash files. That, more than the player itself, is what people raced to save.
ICQ was the program that taught the world to chat, and on June 26, 2024 its owner switched it off after twenty-eight years. Built in 1996 by the tiny Israeli startup Mirabilis — five developers, including Yair Goldfinger, Sefi Vigiser, Amnon Amir, Arik Vardi, and the elder Yossi Vardi — ICQ was among the first stand-alone instant messengers to reach a mass audience. Its name was a pun on “I Seek You,” and for a generation it defined what real-time presence felt like: a green flower in the system tray, a numeric user ID you memorized like a phone number, and a notification sound so iconic that “uh-oh” still triggers Pavlovian recognition decades later.
The growth was extraordinary for its moment. ICQ was freely downloadable, spread by word of mouth, and at its peak around 2001 the service reported more than 100 million registered accounts. That success made it an acquisition target almost immediately: AOL bought Mirabilis on June 8, 1998 for $287 million up front plus up to $120 million in performance-based payments — a landmark price for a two-year-old chat client. ICQ then began a long ownership migration that mirrors a quarter-century of internet history: AOL held it for over a decade, sold it in April 2010 to Digital Sky Technologies (soon Mail.ru Group) for a reported $187.5 million, and Mail.ru later rebranded as VK.
Under each owner ICQ slowly receded in the West, displaced first by AIM and MSN Messenger, then by SMS, Facebook, WhatsApp, and the smartphone. But it never fully died; it lingered for years in pockets of Eastern Europe and the former Soviet Union, where Mail.ru kept it alive. The end came as a corporate housekeeping note: VK announced in May 2024 that ICQ would close on June 26 and steered remaining users toward VK Messenger and VK WorkSpace.
What its users lost was less a tool than a memory — the first screen name, the first contact list, the first stranger met online. ICQ did not collapse in scandal or run out of money. It simply outlived the era it had invented, and was finally retired by a successor company with newer apps to promote.
Yahoo Answers was the open internet’s communal question box — a place where anyone could ask anything and anyone could answer — and on May 4, 2021 Yahoo switched it off after sixteen years. Launched to the public on December 8, 2005, the service let users post questions on any topic, vote on responses, and earn points for participation. For a stretch in the late 2000s it was one of the most-visited reference destinations on the web: in 2009 Yahoo claimed roughly 200 million users worldwide and millions of daily visitors, and for a time a Yahoo Answers result sat near the top of an enormous share of long-tail Google searches.
Then it became something stranger and more durable than a reference site: a meme. The very openness that made Yahoo Answers useful also filled it with malformed, surreal, and unintentionally hilarious questions — the most famous, “how is babby formed,” posted in 2006 and immortalized by Something Awful and a wave of YouTube parodies. For millions, Yahoo Answers stopped being where you went for answers and became where you went to laugh, a generator of internet folklore even as its credibility as a knowledge source eroded.
That erosion was the official cause of death. As Google’s own answer boxes, Wikipedia, Reddit, Quora, and Stack Overflow absorbed the serious questions, Yahoo Answers’ usage fell steadily — by one third-party measure, US monthly active users dropped from around 24 million in early 2010 to under 6 million by late 2015. By the time Verizon owned Yahoo, the site was a low-traffic relic carrying real moderation and infrastructure costs. The company announced the shutdown on April 5, 2021, froze new posts on April 20, closed the doors on May 4, and gave users until June 30 to download their contributions as a JSON archive.
What was lost was uneven: a vast, messy corpus of human curiosity and community help, alongside a comedic artifact of the early social web. Yahoo Answers did not fail dramatically; it simply outlived its usefulness as the internet learned better ways to ask and answer.
Internet Explorer was the browser that conquered the web and then spent a decade as the punchline of it, and on June 15, 2022 Microsoft retired the IE11 desktop application for good. Launched in August 1995 as part of the Microsoft Plus! pack for Windows 95, IE rode the most powerful distribution advantage in computing history — it came bundled with Windows, the operating system on nearly every PC on earth — to crush Netscape in the first browser war. By 2002 and 2003 it held roughly 95 percent of the market, a dominance so total it became the subject of a landmark U.S. antitrust case over exactly that bundling.
Then, having won, Microsoft stopped trying. With Netscape vanquished, IE6 — released in August 2001 — was left to ossify for years, becoming a byword for security holes and broken web standards that web developers cursed and corporate IT departments could not escape. While IE stood still, the web moved: Firefox arrived in 2004 with tabs and standards compliance, and Google’s Chrome, launched in 2008, was faster and cleaner. In May 2012, Chrome overtook Internet Explorer as the most-used browser in the world. IE’s share collapsed, and the program acquired its enduring second career — the thing you opened once on a new PC to go download Chrome or Firefox, and then never touched again.
Microsoft eventually accepted the defeat it had inflicted on itself. It replaced IE with Microsoft Edge in 2015, and on June 15, 2022, after more than 25 years, the IE11 desktop application officially retired and went out of support, progressively redirecting to Edge. Legacy compatibility was preserved through “IE mode” inside Edge, which Microsoft committed to supporting through at least 2029 — a tacit admission that decades of intranets and enterprise apps had been built to IE’s idiosyncrasies and could not simply be abandoned.
What IE leaves behind is the canonical story of how a monopoly rots. It did not lose because it ran out of users or money; it lost because, once unchallenged, it quit innovating, accumulated a mountain of security and standards debt, and watched faster rivals dismantle a position that had looked permanent. The browser that once was the internet for most people ended as a compatibility shim and a meme.
Skype was the service that taught the world it could call anyone, anywhere, for free over the internet — and on May 5, 2025 Microsoft switched it off and folded its users into Teams. Launched on August 29, 2003 by the Swedish entrepreneur Niklas Zennström and the Dane Janus Friis, built by a team of Estonian engineers, Skype turned a personal computer into a phone. “To Skype” became a verb; a grandparent video-calling grandchildren across an ocean became, for a while, the defining image of what the consumer internet was for. At its height around 2013 Microsoft reported some 300 million monthly users.
Skype’s commercial history was a relay of owners who struggled to know what they held. In September 2005 eBay bought it for roughly $2.6 billion, on a theory — that buyers and sellers would want to talk — that never materialized; it took a $1.4 billion writedown in 2007 and sold most of its stake in 2009. In May 2011 Microsoft acquired Skype for $8.5 billion, its largest purchase to that point, and wired it into Windows, the Xbox, and Office; for a few years Skype was simply how people made internet calls.
Then the ground shifted. Apple’s FaceTime made video calling a default on every iPhone; WhatsApp made free calls and messages frictionless for billions; Zoom became the verb of the pandemic that Skype should have been; and Microsoft’s own Teams, launched in 2016, steadily annexed the use cases Skype had pioneered. By 2023 its daily users had fallen to around 36 million, even as Teams crossed hundreds of millions.
On February 28, 2025 Microsoft announced that Skype would retire on May 5, 2025, with users migrated to the free version of Teams or able to export their data. The fate is “Merged” rather than “Shut Down” only on a technicality: contacts and chats carried over to Teams, but the standalone product that invented mass consumer VoIP, after 22 years, was gone. Skype was killed less by any single rival than by the entire category it had created, and finally by the owner that decided one free communications app was enough.