NixieFX, a browser-based particle editor for Three.js and PixiJS

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Hi everyone. I am part of the team working on NixieFX, and I would like to share the current editor with the community.

NixieFX is focused on real-time effects for web games using Three.js and PixiJS. The editor includes multi-emitter timelines, curves, gradients, shape emission, velocity and forces, noise, plane collision, flipbooks, trails, sub-emitters, and a node-based material workflow.

We wanted the authoring experience to feel familiar to artists coming from engine-style particle systems while still fitting a web development pipeline. Projects remain as plain JSON in a local folder, and exports include backend diagnostics so limitations are visible before integration.
The PixiJS and Three.js runtimes share a deterministic simulation, but each has its own rendering path. The goal is portability where it is practical, not a promise that every 3D material or mesh effect will look identical in 2D.

The editor is free to use here:NixieFX — Particle & VFX Editor

I would be grateful for feedback on the timeline and material workflow, especially from artists who regularly move effects between authoring tools and runtime teams.

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What’s your use case? It works well for little effects, but I guess it’s usefulness kinda depends on what you would use it for.

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The main use case is reusable real-time effects for web games without an engine-specific authoring step: build the effect in the browser, export it as plain JSON, then run it in Three.js or PixiJS. It is a good fit for ability impacts, projectiles, environmental loops, and similar lightweight effects. It is less suited to heavy mesh or simulation work that depends on a Unity or Unreal pipeline.

We put together an end-to-end Three.js example covering the mobile renderer setup, input and game loop, loading a portable bundle, spawning effects, updating them, and cleanup:

That tutorial is close to the workflow we are optimizing for, so feedback on where the integration feels awkward would be especially useful.