An open source Flash Player emulator.

Made to run natively on all modern operating systems and browsers, Ruffle brings Flash content back to life with no extra fuss.

• Ruffle @ GitHub.

swf2js is Flash Player Runtime Engine written in pure JavaScript.

This is a JavaScript FlashPlayer emulator that analyzes SWF files of Adobe Animate (Flash) in real time and converts them to HTML. It supports SWFs for Flex, Flash, Animate, and all platforms.

• swf2js @ GitHub.

Create, share and reuse interactive HTML5 content in your browser

Interactive game and app development library for TS, Haxe and JS.

OpenFL implements the Flash Player API, but goes everywhere that browser plug-ins cannot. Use a familiar and battle-tested workflow to accelerate development. You can even leverage Adobe Animate as an integrated art pipeline.

• OpenFL @ GitHub.

An open source Flash™ runtime written in pure JavaScript

Swiffy converts Flash SWF files to HTML5, allowing you to reuse Flash content on devices without a Flash player (such as iPhones and iPads). Swiffy can't yet convert DoubleClick Studio creatives.

Synfig Studio is a free and open-source 2D animation software, designed as powerful industrial-strength solution for creating film-quality animation using a vector and bitmap artwork. It eliminates the need to create animation frame-by frame, allowing you to produce 2D animation of a higher quality with fewer people and resources. Synfig Studio is available for Windows, Linux and MacOS X.

Create iOS and Flash Games with Stencyl

Tumult Hype’s keyframe-based animation system brings your content to life. Click “Record” and Tumult Hype watches your every move, automatically creating keyframes as needed. Or, if you’d prefer to be more hands-on, manually add, remove, and re-arrange keyframes to fine-tune your content.

Allows you to upload files using HTML5 Gears, Silverlight, Flash, BrowserPlus or normal forms, providing some unique features such as upload progress, image resizing and chunked uploads.