Flash

Flash was a dominant multimedia software platform (Macromedia, then Adobe) used for creating vector graphics, animation, and Rich Internet Applications (RIAs), officially discontinued on December 31, 2020.

Adobe Flash, formerly Macromedia Flash, was the industry standard for delivering interactive web content: animations, browser games, and embedded video players. The platform used the proprietary SWF file format and ActionScript programming language, driving the early 2000s web experience. Despite its widespread adoption, Flash faced increasing criticism for performance issues and persistent security vulnerabilities, notably after Steve Jobs’ 2010 open letter. Open standards like HTML5, WebGL, and WebAssembly provided viable, secure alternatives. Adobe announced its End-of-Life (EOL) in 2017, ceasing support on December 31, 2020, with Flash content blocked from running by January 12, 2021.

https://www.adobe.com/products/flashplayer/end-of-life.html