Built with AssemblyScript

A place for all things AssemblyScript. Feel free to add your projects and applications, in alphabetical order.




  • WebAssembly Studio Learn, Teach, Work and Play in the WebAssembly Studio.

  • Fastly Terrarium A compilation toolchain and sandbox to run WebAssembly server-side, with native support for AssemblyScript.

  • NEAR Studio Develop and deploy distributed web apps using smart contracts authored in AssemblyScript.

  • Assembleash A playground for WebAssembly and Typescript-like languages. (Deprecated)


  • wasmBoy (demo) Game Boy / Game Boy Color Emulator Library, written for WebAssembly using AssemblyScript.

  • Atari 2600 An Atari 2600 emulator written in AssemblyScript compiled to WebAssembly.



  • as2d Bring the power of the CanvasRenderingContext2D prototype to AssemblyScript.

  • as-smallpt Port of C++ smallpt, a path tracing renderer.

  • Babylon.Font Create 3d text in BabylonJS


  • AS-LZMA LZMA Decoder written in AssemblyScript.

  • assemblyscript-bson BSON encoder / decoder

  • assemblyscript-json JSON encoder / decoder

  • bignum.wasm Fixed length big numbers like u128, i256, fp128 and etc for AssemblyScript

  • Levenshtein Wasm An experimental lightning-fast Wasm-compiled levenshtein library.

  • superfasthash An implementation of the SuperFastHash non-cryptographic hashing algorithm in JavaScript and WebAssembly.

  • as-wasi An AssemblyScript API layer for WASI system calls.

  • WASM-Crypto An AssemblyScript set of cryptographic primitives for building authentication and key exchange protocols.

  • galois Arithmetic and polynomial operations in finite fields.

  • merkle Merkle tree and other data structures.

  • xoroshiro128starstar An AssemblyScript port of xoroshiro128starstar.c

  • pixelmatch-asc Pixel level image comparison library


  • as-pect A test library for AssemblyScript.

Project Templates


  • wasm-matrix A Matrix effect in your terminal using AssemblyScript and WASI, deployed to WAPM.

  • WireWorld (demo) The Wireworld Computer in Javascript/Canvas.