HTML5 video
Support for HTML5 video has been steadily increasing. In June 2013, Netflix added support for HTML5 video. In January 2015, YouTube switched to using HTML5 video instead of Flash by default. In December 2015, Facebook switched from Flash to HTML5 for all video content.
Adobe Wallaby
Adobe Wallaby is an application that turns FLA files into HTML5. On March 8, 2011, Adobe Systems released the first version of an experimental Flash (FLA files) to HTML5 converter, code named "Wallaby". It has been quickly superseded by various other Adobe tools.