1. wasmtime

    High-level API to expose the Wasmtime runtime

    v44.0.0 1.4M #wasm-module #wasi #wasm-host #wasm-bytecode #standards-compliant #wasm-api
  2. wit-component

    Tooling for working with *.wit and component files together

    v0.247.0 10.0M #wasm-module #wit #wasm-interface #wasm-binary #wasm-component-model #binary-interface #import-export
  3. wasmprinter

    Rust converter from the WebAssembly binary format to the text format

    v0.248.0 1.7M #wasm-text-format #wasm-binary #format-text #wasm-module #printing #wasm-parser #converter
  4. wat

    Rust parser for the WebAssembly Text format, WAT

    v1.248.0 1.8M #wasm-text-format #text-parser #wasm-binary #wasm-parser #parse-file
  5. file-format

    determining the file format of a given file or stream

    v0.29.0 76K #filetype #media-type #magic-number #mime #file-type
  6. wasm-tools

    CLI tools for interoperating with WebAssembly files

    v1.246.1 16K #wasm-module #wasm-binary #convert-binary #validation #wit-component #wasm-text-format #binary-module #demangle #objdump #wasi
  7. wast

    Customizable Rust parsers for the WebAssembly Text formats WAT and WAST

    v248.0.0 2.6M #wasm-text-format #wasm-module #text-parser #wasm-parser #s-expr #test-suite
  8. wasmer

    High-performance WebAssembly runtime

    v7.2.0-alpha.2 245K #wasm-engine #wasm #vm
  9. wac-types

    definition of WebAssembly component model types

    v0.10.0 31K #wasm-component-model #wasm #component-model
  10. wasm-opt

    bindings

    v0.116.1 316K #wasm-opt-bindings #wasm-bindings #wasm-optimization #wasm-module #optimization-passes #binaryen
  11. wasm-pvm-cli

    CLI for WASM to PVM recompiler

    v0.8.0 #pvm #wasm #compiler #import #wasm-memory #recompiler #emit #llvm-ir
  12. wac-cli

    encoding and decoding WebAssembly compositions

    v0.10.0 900 #wasm-component #wasm #component-model
  13. wat_server

    WebAssembly Text Format language server

    v0.10.4 #language-server #wasm-text-format #safe #wasm
  14. wasm-bodge

    that takes wasm-bindgen output and wraps it for all JavaScript runtimes

    v0.2.3 #javascript #wasm #wasm-bindgen #npm
  15. wasm-pvm

    WASM to PVM (PolkaVM) recompiler

    v0.7.1 #compiler #pvm #wasm #polka-vm #wasm-memory #wat #llvm-ir #emit #bytecode #cache
  16. nectar-lang

    A compiled-to-WASM frontend language with built-in security, SEO, and mobile support

    v0.2.5 #compiler #wasm #web #frontend
  17. loom-lang

    Loom — a programming language for safe-by-construction software. Recipes with first-class effects, refinement types, and a zero-dep Loom → Rust → rustc → run pipeline.

    v0.1.0 #effect #refinement #dsl #compiler
  18. wit-bindgen-test

    Backend of the wit-bindgen test subcommand

    v0.57.1 3.3K #wit-bindgen #wasm-bindings #testing #test-runner #codegen #wasi #run-time-component
  19. vsf

    Versatile Storage Format

    v0.3.4 #serialization #storage #data-format
  20. wasm_runtime_layer

    Compatibility interface for WASM runtimes

    v0.7.0 650 #wasm-engine #wasm-module #wasm-interface #instance #back-end #wasm-host
  21. wasmi_cli

    WebAssembly interpreter

    v2.0.0-beta.2 #wasm-interpreter #wasm #interpreter
  22. cc-downloader

    A polite and user-friendly downloader for Common Crawl data

    v0.6.1 850 #downloader #user-friendly #common-crawl #polite #x86-64
  23. wain

    WebAssembly interpreter written in Safe Rust with zero dependencies

    v0.1.7 #wasm-interpreter #wat #wasm
  24. wasmer-c-api

    Wasmer C API library

    v7.2.0-alpha.2 #wasm-engine #wasm-module #wasm
  25. voce-schema

    Voce IR schema definitions and generated FlatBuffers bindings

    v0.1.0 #ir #compiler #accessibility #ui #ai
  26. fhex

    Hex float conversion: ToHex for formatting, FromHex for parsing. IEEE 754 hexadecimal format (0x1.8p+1).

    v2.0.2 #floating-point #hex #wat #wasm #ieee-754
  27. zlayer-agent

    Container runtime agent using libcontainer/youki

    v0.11.7 #container-orchestration #youki #orchestration #libcontainer #virtualization
  28. wasker

    Wasm compiler for running Wasm on your favorite kernel

    v0.2.2 #wasm-compiler #wasm-binary #elf-file #os #llvm #wat
  29. seggwat-cli

    CLI for the SeggWat feedback platform — manage feedback, projects, and ratings from the terminal

    v0.17.2 #saas #feedback #rating #nps #cli
  30. wat_formatter

    WebAssembly Text Format formatter

    v0.10.1 #wasm-text-format #formatter #wasm
  31. wasmer-cli

    Wasmer CLI

    v7.2.0-alpha.2 #wasm #cli
  32. wasm_component_layer

    WebAssembly component model implementation for any backend

    v0.1.18 1.0K #wasm-component-model #wasm-interface #back-end #wit #wasm-engine #wit-parser #wit-component
  33. mcp-kit

    Ergonomic, type-safe Rust library for building MCP servers with plugin system and real API integrations

    v0.4.0 #model-context-protocol #json-rpc #mcp #llm
  34. wat_parser

    WebAssembly Text Format concrete syntax tree parser

    v0.10.1 #wasm-text-format #concrete-syntax-tree #wasm-parser #parser
  35. rwat

    Parse annotated wat into relocatable wasm file

    v0.1.0 #wat #relocation #wasm #linking
  36. wat_service

    WebAssembly Text Format language service

    v0.10.2 #language-server-protocol #language-service #wasm-text-format #wasm
  37. wat_syntax

    WebAssembly Text Format syntaxes

    v0.10.1 #wasm-text-format #ast #syntax-tree
  38. oak-bat

    High-performance incremental Windows Batch (BAT) parser for the oak ecosystem with flexible configuration, supporting shell scripting and automation workflows

    v0.0.10 #bat #windows #batch
  39. voce-compiler-wasm

    Voce IR WASM compiler — compiles state machines and compute nodes to WebAssembly

    v0.1.0 #ir #compiler #accessibility #ui #ai
  40. ccdown

    A polite and user-friendly downloader for Common Crawl data

    v0.6.5 #downloader #downloader-for-crawl #warc #polite #client #user-friendly #gz #cc #common-crawl
  41. rsxtk

    A high-performance Rust WASM Toolkit for managing and running WASI scripts, WAT, and WASM modules

    v0.4.4 #wasi #toolkit #rust-wasm
  42. inkjet

    A batteries-included syntax highlighting library for Rust, based on tree-sitter

    v0.11.1 1.2K #tree-sitter #syntax-highlighting #highlight
  43. wasi-assembler

    Modern assembler for WASM and WASI (wit-component) - strongly typed, object-oriented, zero-dependency core

    v0.1.1 #wasi #assembler #wasm #assembly #disassembler
  44. shellish_parse

    Parses "command line" syntax inspired by Bourne shell ("shellish")

    v2.2.0 700 #arguments-parser #shellish #bourne
  45. inf-wast

    inf-wasm-tool inf-wast crate fork with Inference non-detenministic instructions extension

    v0.0.8 650 #wat #wasm-parser #parser #wasm
  46. seq-tui

    TUI REPL for the Seq programming language with IR visualization

    v0.14.1 #repl #seq #tui #language
  47. oak-wat

    WebAssembly Text (WAT) language parser with support for web platform development and portable code generation

    v0.0.11 #wat #wasm #wasm-parser #parser
  48. oxilean-codegen

    OxiLean code generator - LCNF-based compilation and optimization

    v0.1.1 #codegen #lcnf #compiler #lean #compiler-optimization
  49. gabagool-debug-adapter

    Debug adapter protocol server for gabagool

    v0.1.1 #debugging #server #dap #wat #protocols #time-travel #dwarf
  50. hanzo-wasm

    WASM runtime for Hanzo AI platform

    v0.1.1 #wasm-engine #wasm-module #wasm-execution #run-time-execution #limit #logging #memory-management #hanzo #wasm-host #host-guest
  51. waside-cli

    A CLI for waside

    v0.1.0 #ast #wasm #cli
  52. peepmatic

    DSL and compiler for generating peephole optimizers

    v0.78.0 #compiler-optimization #dsl-compiler #peephole #left-hand #bit-width #pattern-matching #precondition #bor #cranelift #redundant
  53. aegis-wasm

    Aegis - A local-first WebAssembly sandbox runtime

    v0.1.1 #wasm-engine #wasm-sandbox #wasm #security #sandbox
  54. washm

    Core engine for the WASHM WebAssembly toolchain

    v0.4.0 #compiler-optimization #binaryen #optimization #compiler #wasm #wasm-compiler
  55. wain-syntax-text

    WebAssembly text format parser for wain project

    v0.2.1 #wasm-text-format #wasm-parser #wat
  56. inf-wasmparser

    event-driven library for parsing Inferara non-deterministic WASM extension WebAssembly binary files

    v0.0.8 250 #wasm-parser #wasm #parser
  57. mielin-wasm

    WebAssembly sandboxing and execution runtime for agent cells using Wasmtime

    v0.1.0-rc.1 #wasm-sandbox #wasmtime #wasm #sandbox
  58. rpu

    GLSL-compatible language for rendering procedural graphics on the CPU

    v0.3.0 700 #graphics-rendering #shader #shader-language #glsl #shader-rendering #graphics-shader #glsl-shader
  59. gzinspector

    inspect gzip/zlib compressed files (especially chunked textual files such as WARC, WET, WAT, CDX, ZipNum, etc.)

    v0.2.4 #zlib #compression #gzip #chunked #warc #wat #cdx #preview #wet #json-output
  60. mimobox-wasm

    MimoBox WebAssembly sandbox backend using Wasmtime

    v0.1.0-alpha #wasm-sandbox #isolation #security #wasm #sandbox
  61. wasmer-c-api-near

    Wasmer C API library

    v1.0.1 #wasmer #wasm-engine #wasm
  62. rs-wat2imports

    Prints the import info of the wasm/wat

    v0.1.0 #wasi #wat #import #wasm
  63. syntastica-parsers-git

    Collection of tree-sitter parsers for syntastica, fetching with git in the build-script

    v0.6.1 380 #tree-sitter #syntastica #build-script #git #collection-of-tree-sitter #fetching
  64. oracle_omen_wasm

    WASM sandbox with fuel limits for oracle.omen

    v0.1.0 #wasm-sandbox #tool-execution #agent-framework #logging #memory #omen #auditable #event-sourcing #crdt #wasm-execution
  65. floretta

    Automatic differentiation for WebAssembly

    v0.5.0 1.4K #automatic-differentiation #wasm #command-line-interface #reverse-mode #tool
  66. rs-wat2wasm

    Converts the wat to wasm bytes

    v0.1.0 #wasi #wat #convert #wasm
  67. wasmer-asml-fork

    High-performant WebAssembly runtime

    v2.0.0 #wasm-engine #wasm #vm
  68. silly-wat-linker

    that makes writing WebAssembly Text files easier

    v0.7.1 #wasm-text #wat #import #sorting #expression-parser #constexpr #wasm-text-format
  69. waside

    An AST for WebAssembly that supports decoding, encoding, and printing

    v0.1.0 #encoder #ast #wasm
  70. wain-ast

    WebAssembly abstract syntax tree definition used by both binary format and text format for wain project

    v0.2.2 110 #ast #wat #wasm #syntax-tree
  71. scylla-udf

    Proc macros for scylla rust UDFs bindings

    v0.1.0 1.1K #udf #scylla
  72. wasmer-interface-types

    WebAssembly Interface Types library for Wasmer

    v0.17.0 #wasm-interface #wasmer #wasi #standard #decoder #emscripten #wasm-engine
  73. wasmfmt

    A WebAssembly formatter

    v0.2.4 #formatter #wat #wasm #code-formatter #command-line
  74. heatmap_svg

    a package to make svg image heatmaps based on a list of dates

    v0.1.1 #svg #heatmap #date #image #list
  75. accumulo_access_pg

    PostgreSQL extension for parsing and evaluating Accumulo Access Expressions

    v0.1.5 340 #postgresql-extension #expression-parser #accumulo #access #authorization #pgrx #row-level #user-session
  76. Try searching with DuckDuckGo or on crates.io.

  77. wit-component-update

    Tooling for working with *.wit and component files together

    v0.205.0 #wit-component #wasm-module #import-export #wasm-binary #imported #wasm-interface #canonical-abi #component-model
  78. wabt

    Bindings to the wabt library

    v0.10.0 23K #wasm-binary #tool #wasm
  79. dfwasm

    Main CLI for the dfwasm compiler

    v0.1.0 #compiler #wasm #diamond-fire #template #math #wasm-module #df
  80. syntastica-parsers

    Collection of tree-sitter parsers for syntastica, using parsers available on crates.io

    v0.6.1 290 #tree-sitter #syntastica #collection #collection-of-tree-sitter #io
  81. totally-speedy-transmute

    does safe things with your safe data

    v1.69.420 #transmute #memory-safe #speedy #safe-data #windows #file-access #article #author #programmers #interest
  82. bevy_wasm_scripting

    Adds support for wasm/wat assets in Bevy, and enables easy scripting

    v0.2.0 #scripting #bevy #gamedev #bevy-wasm #wasm
  83. wasmc

    Compile .wat files into .wasm binaries

    v1.0.0 #wat #compile #wasm #binaries #module
  84. substrate-wasmtime

    High-level API to expose the Wasmtime runtime

    v0.19.0 2.6K #wasmtime #wasm-module #store #wasm-memory #linker #jit #wasm-api #sandbox #memories #globals
  85. cargo-stylus

    CLI tool for building Stylus contracts on Arbitrum chains

    v0.10.5 #ethereum #arbitrum
  86. enarx-exec-wasmtime

    Enarx WebAssembly Loader

    v0.6.3 290 #enarx #wasm-module #loader #confidential-computing #wasmtime #file-descriptor #musl #wasm-binary
  87. componentize-mbt-cli

    CLI tool for MoonBit support of the WASM compoment model

    v0.2.0 #moon-bit #wasm #moonbit
  88. w2c2

    High level crate for w2c2-sys

    v0.1.0 #wasm-compiler #wasm
  89. noders

    NodeJS-like event loop environment for Rust

    v0.0.2 #macro #events #environment #scope #javascript #memory-safe #type-system #nodejs #api-design #haskell
  90. wit-bindgen-mbt

    The MoonBit bindings generator for WIT and the component model

    v0.1.0 #wit-bindgen #moon-bit #wasm
  91. tarnik

    Macro for generating WASM AST

    v0.1.0 #generator #macro #wasm #gc #wasm-binary
  92. floretta-cli

    Automatic differentiation for WebAssembly

    v0.5.0 340 #automatic-differentiation #cli #wasm #wat #reverse-mode
  93. wat-fmt

    A pretty formatter for WebAssembly Text Format

    v0.0.8 #wasm-text-format #formatter #non-deterministic #parameters #instructions #build-target
  94. webylib

    Webcash HD wallet library — bearer e-cash with BIP32-style key derivation, SQLite storage, AES-256-GCM encryption, and full C FFI for cross-platform SDKs

    v0.3.12 1.7K #wallet #payment #webcash #bearer-cash
  95. tarnik-ast

    A WASM AST implementation in Rust

    v0.1.0 #tarnik #wasm #ast #gc #macro #wasm-binary
  96. wasm-opt-sys

    Native wasm-opt build

    v0.116.0 214K #native #binaryen #bindings #build #level #wasm #wasm-build
  97. harmoniis-wallet

    Smart-contract wallet for the Harmoniis marketplace for agents and robots (RGB contracts, Witness-backed bearer state, Webcash fees)

    v0.1.128 #smart-contracts #wallet #webcash #harmoniis
  98. multisig-wallet-neo

    Neo N3 multisig wallet smart contract with configurable owners and threshold

    v0.2.0 #smart-contracts #neo #n3
  99. greenwasm

    Webassembly spec in Rust

    v0.3.1 #specification #wasm #binary-format-parser #validation #wat #execution-engine #re-exports #test-suite #fuzzer #wasm-engine
  100. cavity

    Create files padded with zeros. Alternatinve to macOS's mkfile.

    v1.1.0 #macos #mkfile #byte #fill #padded #fs-file #rust-std
  101. serde_wat

    Scary macros for serde_json

    v0.1.0 #serde-json #macro #json-macro #json #serde
  102. componentize-mbt

    wrapping MoonBit-generated WAT into a WASM component

    v0.1.0 #wasm-component #moon-bit #wasm
  103. argon

    Language

    v0.1.0 #i32 #i64 #f32 #f64 #wat
  104. wat-ast

    WebAssembly text format (.wat) style-preserving syntax tree for generating human readable code

    v0.20.3 100 #wasm-text-format #syntax-tree #human-readable #generator #read
  105. kythera-lib

    Kythera testing framework

    v0.2.0 #test-framework #kythera #testing #fvm #abi #tester #wasm
  106. rsmod-pathfinder

    A breadth-first search path finder

    v5.0.4 #path-finder #bfs #rsmod #rust #wasm
  107. cavity-cli

    Create files padded with zeros. Alternatinve to macOS's mkfile.

    v1.1.0 #macos #mkfile #cli #padded #zero