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Top 23 C++ WASM Projects
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filament
Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2 (by google)
Filament - A modern, efficient graphics engine suitable for real-time rendering, link: http://google.github.io/filament.
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SSVM
WasmEdge is a lightweight, high-performance, and extensible WebAssembly runtime for cloud native, edge, and decentralized applications. It powers serverless apps, embedded functions, microservices, smart contracts, and IoT devices.
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Project mention: SIMD Perlin Noise: Beating the Compiler with SSE | news.ycombinator.com | 2025-07-23
Yes indeed, it's about 500 LOC in https://github.com/google/highway/blob/master/hwy/ops/generi....
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The Faust compiler uses de Bruijn indices internally to reuse computations. Anyone else know any other examples?
https://github.com/grame-cncm/faust
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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OnnxStream
Lightweight inference library for ONNX files, written in C++. It can run Stable Diffusion XL 1.0 on a RPI Zero 2 (or in 298MB of RAM) but also Mistral 7B on desktops and servers. ARM, x86, WASM, RISC-V supported. Accelerated by XNNPACK.
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There are some really interesting parts around sending commands to WASM applications in there, I would encourage you to explore those yourself, along with the super interesting article by Cornelius Diekmann on porting DOOM to WASM I mentioned earlier.
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Project mention: Hlslpp: Math library using HLSL syntax with multiplatform SIMD support | news.ycombinator.com | 2025-06-11
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WebGui
An example demo of IMGUI (Immediate Mode GUI) on the web. Using only WebGL, GLFW and ImGui. Suitable for being compiled to web assembly (WASM).
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AlvaAR
World tracking for WebAR. A Javascript library for Augmented Reality to run SLAM in the browser.
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bergamot-translator
Cross platform C++ library focusing on optimized machine translation on the consumer-grade device.
You can use bergamot ( https://github.com/browsermt/bergamot-translator ) with Mozilla's models ( https://github.com/mozilla/firefox-translations-models ).
Not the easiest, but easy enough (requires building).
I used these two projects to build an on-device translator for Android.
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The WebAssembly component model is aimed at having composable components that can call each other. The components can be written in any language, compiled to WebAssembly, and interoperate: https://github.com/WebAssembly/component-model/
Extism is a plugin framework for WebAssembly:
https://extism.org/
https://github.com/extism/extism
Visual Studio Code can run WebAssembly extensions: https://code.visualstudio.com/blogs/2024/05/08/wasm
A project to bring WebAssembly plugins to Godot: https://github.com/ashtonmeuser/godot-wasm
WasmEdge can be embedded in applications: https://wasmedge.org/docs/embed/overview
Wasmer can be embedded in applications: https://blog.wasmer.io/executing-webassembly-in-your-rust-ap...
Wasmtime can be embedded in applications: https://docs.wasmtime.dev/lang.html
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fizzy
Fizzy aims to be a fast, deterministic, and pedantic WebAssembly interpreter written in C++. (by wasmx)
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ WASM discussion
C++ WASM related posts
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AI makes the humanities more important, but also a lot weirder
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DOOM...*rendered* using a single DIV and CSS! 🤯🔫💥
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When Should I Use WebAssembly?
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MuJoCo Demo
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WASM GC isn't ready for realtime graphics
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Lua Is So Underrated
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Jaws – a JavaScript to WASM ahead of time compiler
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A note from our sponsor - Sevalla
sevalla.com | 1 Sep 2025
Index
What are some of the best open-source WASM projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | emscripten | 26,762 |
| 2 | filament | 18,799 |
| 3 | SSVM | 10,075 |
| 4 | highway | 4,983 |
| 5 | NectarJS | 3,610 |
| 6 | faust | 2,814 |
| 7 | asm-dom | 2,810 |
| 8 | OnnxStream | 1,974 |
| 9 | wasm-fizzbuzz | 1,545 |
| 10 | WaykiChain | 1,047 |
| 11 | hlslpp | 944 |
| 12 | faasm | 909 |
| 13 | cib | 851 |
| 14 | WebGui | 806 |
| 15 | threepp | 694 |
| 16 | AlvaAR | 439 |
| 17 | bergamot-translator | 397 |
| 18 | mujoco_wasm | 292 |
| 19 | godot-wasm | 240 |
| 20 | fizzy | 229 |
| 21 | datachannel-wasm | 172 |
| 22 | kagome | 171 |
| 23 | proxy-wasm-cpp-sdk | 157 |
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