Building a new Flash

A developer is building a modern, cross-platform (Windows, Mac, Linux) 2D animation authoring tool inspired by Adobe Flash, written in C# using Avalonia and SkiaSharp. The project, called FlashSuccessor, includes a full feature set: a DCEL-based vector drawing engine replicating Flash's paint modes, a multi-layer timeline with keyframes and onion skinning, shape tweening with contour correspondence, a symbol library, .fla/XFL import (including editable import of old Flash files), SWF and HTML5 export, an embedded sound editor, and a dual-surface C# scripting system powered by Roslyn with an ActionScript 3 to C# transpiler. The tool ships with 17 drawing tools, filters, rich text support, and a VS-style docking UI. The author is seeking Patreon support to grow a dedicated team.