68 stories tagged webassembly, newest first.
200 points by vardhan1237 | 73 comments
GitHub repository for PaperPilot, a local, zero-cloud pure-Rust PDF engine and AI document copilot with WASM builds and an MCP server.
60 points by frading | 49 comments
Blog post by Polygon's creator explaining why he rewrote the TypeScript/three.js procedural geometry engine from scratch in Jai with a custom WebGPU renderer.
213 points by molind | 40 comments
Blog post from Globus Software introducing earstrip, an open-source C++/WebAssembly polygon triangulator, and detailing step-by-step optimizations that beat earcut on map polygons.
131 points by sumnole | 108 comments
GitHub repository for NetWasm, a tool that compiles C# and .NET CIL to small standalone WebAssembly with WASI, using AOT compilation with a built-in runtime and precise GC.
8 points by klaussilveira | 1 comments
OpenDE is a web page that lets users play the 1999 Deus Ex demo directly in the browser.
183 points by joakimeriksson | 34 comments
GitHub repository for esp32sim, an open-source ESP32 emulator that runs real firmware locally or in the browser without physical hardware.
56 points by Kapendev | 15 comments
GitHub repository for Parin, a simple cross-platform 2D game engine written in the D programming language with WebAssembly support.
3 points by brian-armstrong | 0 comments
Browser demo of Yagi DSP, a Rust port of the liquid-dsp C library, simulating how different modems perform in the presence of noise via wasm-bindgen.
279 points by deadxwarrior | 146 comments
GitHub repository for ps2-web-recomp, a project that statically recompiles PS2 games to WebAssembly with a native runtime to run them in the browser.
5 points by vasyop | 0 comments
BottleShip is a web app that runs classic Windows games (up to Direct3D 9) in the browser, with a library of built-in demos and support for adding games.
196 points by ilreb | 160 comments
A browser-playable port of Quake rewritten in safe Rust, shown loading its engine with fullscreen, sound, and key controls.
133 points by adunk | 117 comments
A BBS-styled web page hosting classic 1990s PC demoscene productions like Unreal and Second Reality, recompiled to run natively in the browser.
185 points by sn001 | 98 comments
GitHub repository for a project that runs PSP games in the browser via static recompilation to WebAssembly, an HLE kernel, and a WebGL2 renderer.
6 points by mariuz | 1 comments
GitHub repository for a project that simulates and renders DOOM inside the Firebird SQL database, running in the browser via Firebird compiled to WebAssembly.
27 points by davidwshao | 10 comments
First lesson of SciMigo's Build with Python course, a browser-based beginner Python course using Pyodide where code draws pictures on a canvas.
385 points by wiso | 127 comments
A browser-based recreation of the classic Microsoft Visual Basic 6 IDE with form designer, toolbox, project explorer and properties panel.
76 points by kitao | 8 comments
GitHub repository for Pyxel, an MIT-licensed retro game engine for Python implemented in Rust, with built-in pixel art, tilemap, sound, and music editors.
84 points by sia_xi | 39 comments
Scissor Studio, a free browser-based WebAssembly graphics editor for raster and vector work with no signup, shown at its empty 'No file open' workspace.
117 points by vira28 | 40 comments
A browser-based tool that parses PostgreSQL migration SQL with libpg_query WASM and flags operations that may be unsafe, such as locking schema changes.
836 points by MitPitt | 121 comments
Bastardica is a web tool that mixes two fonts by replacing every Nth glyph using OpenType ligatures, running Python client-side via WASM.
450 points by boredjohnny | 243 comments
Landing page for FoxDev Studio/FoxScript, an open-source reimplementation of the Visual FoxPro 9 language and runtime in Rust/wasm for running legacy FoxPro apps.
346 points by xena | 180 comments
Blog post from Techaro about the year-long effort to ship WebAssembly support in Anubis, though the capture shows only Anubis's bot-check challenge page.
327 points by naves | 28 comments
Tiny Emus is a gallery of browser-based 8-bit computer emulators, including KC85 systems and visual chip simulations, by floooh.
619 points by panza | 249 comments
A web page that loads and runs Half-Life 2 directly in the browser, shown here mid-download with a fullscreen button.
343 points by exploraz | 78 comments
GitHub repository for You're the OS, a Python/Pygame game where the player acts as an operating system managing processes, memory and I/O events.
326 points by tripplyons | 95 comments
A browser-playable WebAssembly build of the Pokemon Emerald decompilation project, with on-screen controls and a speed slider.
323 points by sanity | 215 comments
Homepage of the redesigned Freenet, a peer-to-peer platform for decentralized apps built on a global key-value store of WebAssembly contracts.
397 points by eqrion | 150 comments
SpiderMonkey blog post announcing that asm.js optimizations are disabled by default as of Firefox 148, with plans to remove the code entirely.
357 points by phkahler | 117 comments
The web version page of SolveSpace, an open source parametric 2D/3D CAD program that runs in the browser.
338 points by mohebifar | 120 comments
Landing page for Tooscut, an open-source browser-based non-linear video editor using WebGPU compositing, keyframe animation, and real-time preview.
613 points by mikece | 223 comments
Mozilla Hacks article by Ryan Hunt on why WebAssembly remains a second-class language on the web and how to make it first-class.
361 points by TechTechTech | 116 comments
JSLinux by Fabrice Bellard, a page listing emulated systems (now including x86_64 Alpine Linux) that run Linux, Windows 2000, and FreeDOS in the browser.
319 points by enos_feedler | 172 comments
Simon Willison's blog post on Paul Kinlan's notes and Co-do demo about using the web browser as a sandbox for running AI coding agents.
535 points by dsego | 105 comments
Homepage of PGlite, an embeddable Postgres build that runs a full database locally in WASM with reactivity and live sync.
371 points by kylecarbs | 106 comments
GitHub repository for ghostty-web, a WebAssembly build of the Ghostty terminal for browsers with xterm.js API compatibility, by Coder.
339 points by kaycebasques | 118 comments
Haskell Discourse Show and Tell post announcing that the GHC compiler now runs fully client-side in the browser via its WebAssembly backend, with a playground demo.
463 points by pdubroy | 95 comments
SpiderMonkey blog post describing a custom interactive tool for visualizing how the Ion optimizing compiler processes JavaScript and WebAssembly functions.
![Screenshot of db.cs.cmu.edu: F3: Open-source data file format for the future [pdf]](https://hn.urlbox.com/shots/renders/2025/10/2/31749d51-afe4-455e-b01b-88af39f20fa8.jpg)
366 points by eatonphil | 117 comments
SIGMOD 2025 paper presenting F3, a next-generation open-source columnar data file format that embeds WebAssembly decoders for extensibility and interoperability.
376 points by baalimago | 143 comments
Wasmer blog post announcing full Python support in Wasmer Edge (Beta), running sandboxed Python on the edge via WebAssembly.
1017 points by todsacerdoti | 450 comments
WebAssembly.org announcement by Andreas Rossberg that Wasm 3.0 is completed and released as the new live standard, succeeding version 2.0.
370 points by xiange | 108 comments
Show HN post introducing Chili3D, an open-source browser-based 3D CAD application built with OpenCascade compiled to WebAssembly and Three.js.
323 points by coolelectronics | 43 comments
Blog post describing a year-long effort to port the games Terraria and Celeste to run in the browser via WebAssembly, with links to playable versions and repos.
340 points by TechTechTech | 108 comments
JSLinux by Fabrice Bellard, a page listing in-browser emulated systems including Alpine Linux, Windows 2000, FreeDOS, and RISC-V Linux.
553 points by sandybonks | 108 comments
VERT is an open-source, self-hostable web file converter that processes files locally on the user's device with no size limits or ads.
474 points by LinuxBender | 202 comments
The Register article from FOSDEM 2025 on LibreOffice turning 40, its 25.2 release, browser-based WebAssembly versions, and real-time collaboration work.
1239 points by denysvitali | 264 comments
A playful CAPTCHA demo where users must play DOOM in the browser and kill at least three monsters, built with v0 and Vercel by @rauchg.
320 points by thunderbong | 123 comments
A browser-based recreation of the Visual Basic 6 IDE, including form designer, built in C# with Avalonia.
603 points by whatever3 | 178 comments
Documentation index for SQLite's official WebAssembly and JavaScript APIs, enabling sqlite3 use in WASM-capable browsers, in beta since version 3.40.
368 points by zhengkyl | 57 comments
GitHub repository for qrframe, a code-based QR code generator using a Rust/wasm core with editable JavaScript rendering to SVG or canvas.
322 points by kiwicopple | 100 comments
Supabase blog post announcing postgres.new, an in-browser Postgres sandbox built on PGlite (WASM) paired with an LLM assistant for queries, CSV import, charts and RAG.
458 points by bpierre | 128 comments
Homepage of Porffor, an experimental from-scratch JavaScript engine that compiles JS ahead-of-time to WebAssembly or native code.
441 points by thunderbong | 101 comments
GitHub repository for Tau, an open-source distributed Platform as a Service positioned as a self-hosted alternative to Vercel, Netlify, and Cloudflare.
579 points by sebg | 119 comments
WebVM is a browser-based virtual Linux environment that runs x86 binaries client-side via WebAssembly using the CheerpX virtualization engine.
400 points by microflash | 179 comments
A web.dev case study explaining why Google Sheets moved its calculation worker from JavaScript to WasmGC and the performance results.
554 points by fuglede_ | 142 comments
Project page for llama.ttf, a font file that embeds a Llama language model and inference engine via HarfBuzz's Wasm shaper.
535 points by seanisom | 151 comments
A former Adobe engineer introduces Renderlet, a WebAssembly-based cross-platform graphics framework, and demos running the Rive 2D renderer on its Wander GPU runtime.
328 points by todsacerdoti | 33 comments
Blog post by Mary Knize on rendering OpenStreetMap data to an HTML5 canvas using Rust and WebAssembly, for a revamp of her Disney wait-times project Line Buddy.
561 points by BerislavLopac | 202 comments
Homepage of RustPython, an open source Python 3 interpreter written in Rust that can be embedded in Rust apps or compiled to WebAssembly.
452 points by padolsey | 97 comments
GitHub repository for Wasm3, a fast WebAssembly interpreter and portable WASM runtime, here noted as entering a minimal maintenance phase.
401 points by kiyanwang | 238 comments
V8 blog post detailing how garbage-collected languages like Java, Kotlin, and Dart can be ported to WebAssembly, comparing traditional WasmMVP porting with WasmGC.
608 points by TrevorSundberg | 135 comments
Loading screen of the Raverie Engine, a Unity-like game engine and editor compiled to pure WebAssembly that runs in the browser.
408 points by todsacerdoti | 70 comments
GitHub repository for watlings, a set of small exercises for learning WebAssembly by writing programs in the WebAssembly text format.
454 points by vgel | 142 comments
Blog post by vgel describing the design and architecture of a small C compiler written in about 500 lines of Python.
708 points by _Microft | 110 comments
Wavacity is a free, open-source port of the Audacity audio editor that runs in the web browser, shown here with a stereo waveform loaded.
451 points by thunderbong | 164 comments
A web app offering in-browser PDF tools such as encrypt, decrypt, optimize, merge, rotate, and page removal without uploading files.
401 points by jstrieb | 45 comments
A browser-based Tetris game from Red Balloon Security where falling blocks are 32-bit ARM instructions executed on a WebAssembly-compiled Unicorn CPU emulator.
431 points by disadvantage | 181 comments
Landing page for WordPress Playground, a tool that runs a full WordPress instance entirely in the web browser for trying blocks, themes, and plugins.
615 points by jaflo | 149 comments
Landing page for Mofi, a free web app that shortens or lengthens a song to a target duration by detecting repeating audio patterns.