Three.js

WebGL made easy

5.0•35 reviews•

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WebGL made easy

5.0•35 reviews•

313 followers

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3D & Animation

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UI frameworks

TheoremJS is a mathematical framework that is packed up with tons of useful mathematical functions. It is composed of functions in most mathematical fields such as algebra, number theory, statistics, etc... It was designed to fit your need, whatever you are trying to do.

The Best Three.js Alternatives

The best Three.js alternatives are Spline, A-Frame, Vectary, p5.js, and Zdog.

Spline

4.6 ·

Choose Spline if...

✓you want no-code 3D creation and publishing
✓you need fast iteration for web interactions
✓your team is mostly designers, not 3D devs

See details ↓

A-Frame

Choose A-Frame if...

✓you prefer declarative HTML-style 3D scenes
✓you’re building WebXR VR experiences in-browser
✓you want reusable component-based interactions

See details ↓

Vectary

5.0 ·

Choose Vectary if...

✓you need Figma-friendly 3D workflow and embeds
✓you’re building product configurators without heavy code
✓you want collaborative browser-based 3D sharing

See details ↓

p5.js

5.0 ·

Choose p5.js if...

✓you’re making generative art and interactive sketches
✓you want a beginner-friendly creative coding API
✓you don’t need full 3D engine features

See details ↓

Zdog

Choose Zdog if...

✓you want lightweight 3D-like illustrations in UI
✓you prefer simple canvas or SVG rendering
✓you don’t need realistic lighting or PBR

See details ↓

What to Consider

Three.js is a go-to JavaScript library for powering real-time 3D on the web, prized for its flexibility and low-level control over scenes, materials, animation, and performance. But the alternatives landscape spans very different philosophies: Spline and Vectary lean into browser-based, low-code creation and quick publishing (often with designer-friendly workflows and embeds), A-Frame abstracts Three.js into a declarative, WebXR-oriented component model, and p5.js targets creative coding where sketching and experimentation matter more than a full 3D engine. For lighter, stylized “3D-ish” visuals, tools like Zdog trade realism for simplicity and speed, making them attractive for UI ornamentation and illustrative graphics.

In evaluating these options, we considered how much control vs convenience each approach offers, how quickly teams can go from idea to shippable asset, and how well each fits real-world workflows (integrations, embedding, and handoff). We also weighed learning curve and developer ergonomics, rendering fidelity and performance expectations, WebXR needs, and practical product factors like platform support and subscription/support reliability.

Spline

Best 3D platform for the agentic era

4.6 · 31 reviews

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Spline flips the Three.js workflow by giving teams a full browser-based 3D editor and a direct path to publishing, so interactive scenes can ship without building a rendering pipeline from scratch. Instead of spending time on scene setup, lighting, materials, and loaders in code, designers can compose, animate, and iterate visually and then embed the result where it’s needed.

It’s especially compelling when speed and accessibility matter more than deep engine-level control. The UI is designed to feel familiar to product and web designers, which reduces the handoff friction that often appears when Three.js projects require specialized 3D and graphics engineering.

Spline also fits teams that want “good-enough” real-time 3D for marketing sites, landing pages, and lightweight interactions, with fewer moving parts than a custom Three.js stack. The trade-off is that you’re working within Spline’s runtime and feature set, so ultra-custom shaders, unusual render techniques, or highly optimized scenes may still favor Three.js.

For many front-end teams, the appeal is pragmatic: faster iteration cycles, easier collaboration around a shared scene, and straightforward embedding into web experiences.

Best for

Best for designers and front-end teams who want to create and embed interactive 3D quickly without building a Three.js pipeline.

Standout features

✓Browser-based 3D editor
✓One-click embeds for web
✓Designer-friendly interaction and animation tools
✓Fast iteration for marketing visuals
✓Exportable scenes for production use

A-Frame

Building blocks for the virtual reality web

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A-Frame takes a higher-level, declarative approach to building 3D and XR on the web, which can feel dramatically simpler than wiring everything by hand in Three.js. By authoring scenes with HTML-like markup and composable components, teams can assemble environments and interactions quickly while still leveraging the underlying Three.js renderer.

Where it shines is WebXR: VR/AR experiences, spatial interactions, and rapid prototyping of immersive scenes. The component model makes it easier to reuse behaviors like controls, raycasting interactions, and scene systems across projects, rather than repeatedly rebuilding the same patterns in imperative code.

Compared with Three.js, A-Frame trades some fine-grained control for developer speed and a more approachable mental model for web developers. If the goal is to stand up an interactive XR scene fast, iterate on interaction design, and keep code readable, A-Frame can be a better fit than a bespoke Three.js architecture.

For teams that still need escape hatches, the ecosystem encourages extending behavior with custom components, so you can drop down a level when necessary without abandoning the framework.

Best for

Ideal for web developers building WebXR experiences who want a declarative, component-based way to create 3D scenes.

Standout features

✓Declarative HTML-like scene authoring
✓Component system for reusable behaviors
✓WebXR-friendly primitives and patterns
✓Built on top of Three.js
✓Rapid prototyping for immersive experiences

Vectary

The Online 3D Tool

5.0 · 2 reviews

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Vectary is geared toward creating, sharing, and embedding interactive 3D content without taking on the engineering overhead that typically comes with Three.js. It’s closer to a design-and-publish platform than a rendering library, which makes it appealing when the end goal is a viewer, configurator, or product visualization rather than a custom real-time app.

A major differentiator is how it fits into modern design workflows, especially for teams living in tools like Figma. That workflow alignment can cut down iteration time and reduce the back-and-forth between designers and developers that often happens when everything must be rebuilt in Three.js.

For product pages and marketing use cases, Vectary can be the faster path to an interactive 3D embed, with collaboration and sharing built into the platform. The trade-off versus Three.js is reduced freedom to implement completely bespoke rendering techniques or deeply custom interaction systems beyond what the platform supports.

If the priority is getting interactive 3D into production with minimal code and a design-first pipeline, Vectary is a practical alternative to building the entire experience directly on Three.js.

Best for

Best for product, marketing, and design teams who want interactive 3D embeds and configurators with minimal custom code.

Standout features

✓Interactive 3D embeds and viewers
✓Figma-friendly workflow integration
✓Browser-based creation and sharing
✓Configurator-style product visualization
✓Collaboration-oriented publishing flow

p5.js

An open source JS framework that makes creating visual media accessible and inclusive.

5.0 · 1 review

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p5.js is built for creative coding, prioritizing approachability and rapid experimentation over the full 3D engine feature set that Three.js provides. When the goal is interactive sketches, generative art, or educational demos, p5.js offers a simpler API and a faster “idea to canvas” loop than a typical Three.js setup.

Rather than focusing on physically based materials, asset pipelines, and scene optimization, p5.js emphasizes direct manipulation of visuals and input. That makes it a strong alternative for artists, students, and developers who want to explore motion, interaction, and procedural visuals without the overhead of a more engine-like library.

Three.js remains the better choice for sophisticated real-time 3D applications, complex loaders, and high-fidelity rendering. But for lightweight 3D experiments, playful interactions, and browser-native visual work, p5.js can be the more productive and welcoming environment.

It’s also a great fit when code readability and teachability matter, since the library’s conventions and community resources are oriented around learning and creative exploration.

Best for

Ideal for artists, educators, and creative coders making interactive sketches and generative visuals in the browser.

Standout features

✓Beginner-friendly creative coding API
✓Fast sketching for interactive visuals
✓Built-in input and animation loop
✓2D-first with simple 3D support
✓Strong fit for education and demos

Zdog

3D javascript engine for canvas and SVG

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Zdog focuses on playful, stylized pseudo-3D illustrations rather than the realistic rendering and full scene complexity typical of Three.js. If a project needs charming 3D-like UI elements, icons, or decorative animations, Zdog can deliver the look with far less setup than a traditional 3D pipeline.

Instead of dealing with cameras, lighting models, PBR materials, and heavy assets, Zdog renders simple shapes to Canvas or SVG. That simplicity makes it easier to control aesthetics and maintain performance, especially for small interactions that would be overkill to build with Three.js.

The trade-off is scope: Zdog isn’t trying to be a full 3D engine, so it’s not the right tool for realistic scenes, complex physics, or advanced shading. But when the requirement is “3D flavor” with minimal complexity, it can be a cleaner solution than shipping a full Three.js stack.

For teams optimizing for lightweight pages and consistent illustration-style visuals, Zdog offers an intentionally constrained toolkit that’s easy to integrate into front-end projects.