All 305,250 crates, alphabetically

h264-profile-level-idUtility to process H264 profile-level-id values106,373ISC h264-readerReader for H264 bitstream syntax1,351,252MIT/Apache-2.0Multimedia::Video h264_nal_pagingH.264 stream paging tool for tokio17,865MIT h264_webcam_streamCapture h264 video from v4l2 cameras in Linux1,687MIT OR Apache-2.0 h264bsdBindings for h264bsd decoder10,054MIT h264bsd-sysBindings for h264bsd5,507MIT h265RESERVED. Open for adoption by projects that fulfill some criteria. Please see the linked gist for details.2,031Apache-2.0/MIT h265nal-cliCLI for parsing HEVC/H.265 bitstreams with h265nal48BSD-3-Clause h265nal-sysRust FFI bindings for the h265nal C++ HEVC/H.265 parser121BSD-3-Clause h2_impAn HTTP/2 client and server56,269MITAsynchronousNetwork programming h2_wasiAn HTTP/2 client and server50,977MITAsynchronousNetwork programming h2kvHTTP/2 interface for key-value storage systems1,147MIT OR Apache-2.0Web programming h2langH2 Language - A Herbert Online Judge compatible programming language with multi-agent support310MITCompilersParser implementations h2mHTML to Markdown converter.1,148MIT OR Apache-2.0Command line utilities h2m-cliHTML to Markdown converter.226MIT OR Apache-2.0Command line utilities h2m-searchZero-config web search for h2m (DuckDuckGo, Wikipedia, SearXNG, Brave, Tavily).118MIT OR Apache-2.0Command line utilitiesWeb programming h2mdHTML to Markdown converter powered by a browser-grade HTML parser91MITCommand line utilitiesText processing h2n5HTTP 2 N5: Serve N5 datasets over HTTP as tiled image stacks14,745MIT/Apache-2.0Command line utilitiesScience h2oH2O23MITCommand line utilities h2sA declarative HTML parser, which works like a deserializer from HTML to struct12,175MITParsing tools h2s_coreA core part of h2s12,337MIT h2s_macroA macro part of h2s11,803MIT h2sessionStateful HTTP/2 frame parser with HPACK support for passive traffic monitoring3,595MIT OR Apache-2.0Network programmingParser implementations h2specHTTP/2 Spec and testing1,499Apache-2.0/MITNetwork programmingWeb programming::HTTP server h2srhttp-to-socks5 proxy router1,695 Apache-2.0 h2ts-clientA from-scratch HTTP/2 client (RFC 7540 + HPACK) for Rust WASM frontends, tunneled over a WebSocket. No hyper, no tokio.17MITNetwork programmingWebAssembly h2ts-serverMake a WebSocket look like raw TCP, and serve/proxy HTTP/2 over it. Framed by wslay for true sub-frame streaming. Includes the…66MITAsynchronousNetwork programming h2xThin wrapper around `h2` with some ergonomic API for building HTTP/2 servers9,267MIT h3An async HTTP/3 implementation.3,439,555MITNetwork programmingWeb programming::HTTP client h3-axumTransport your Axum router over HTTP/3. Use your existing handlers with QUIC.22,160MIT OR Apache-2.0Network programmingWeb programming::HTTP server h3-bodyAdapt h3 server / client RequestStream to a single http_body::Body surface.113MITAsynchronousNetwork programming h3-datagramrfc9297 extension for the h3 crate706,760MITNetwork programmingWeb programming h3-masqueAn implementation of the CONNECT-UDP protocol, based on h3 and MsQuic97MITNetwork programming h3-msquic-asyncMsQuic-Async based library for using h31,648MITNetwork programmingWeb programming h3-quinnQUIC transport implementation based on Quinn.2,886,241MITNetwork programmingWeb programming h3-shimShim libray between dquic and h34,426Apache-2.0AsynchronousNetwork programming h3-solTiny dependency-free H3 Cell index validator for Solana programs25Apache-2.0AlgorithmsNo standard library h3-utilh3 utilities for tonic-h351,363MITNetwork programmingWeb programming h3-webtransportwebtransport extension for h3234,773MITNetwork programmingWeb programming h33-agent-tokenH33 agent capability token (cka_*) — 64-byte payload, HMAC-SHA3-256 signature, 128-bit capability bitmap. Shared crate used by…111LicenseRef-ProprietaryAuthenticationCryptography h33-cliH33 terminal companion — sign up, mint agent tokens, run the MCP server, audit, detect classical crypto, wrap with substrate, run…46LicenseRef-ProprietaryCommand line utilitiesCryptography h33-clientH33.ai REST API client — async, typed responses, post-quantum attestation verification26MITAPI bindingsCryptography h33-mcpH33 Model Context Protocol server — exposes the H33 post-quantum substrate, biometric auth, ZK proofs, triple-key signing,…27LicenseRef-ProprietaryCommand line utilitiesCryptography h33-substrate-verifierReference implementation of the H33 substrate response attestation verifier. Verifies X-H33-Receipt HTTP headers against three…108LicenseRef-ProprietaryAuthenticationCryptography h3arrowIntegration of the H3 geospatial grid with the arrow memory model6,709MIT h3ch3c419MIT h3ectlHcode Control Library1,491MIT h3iLow-level HTTP/3 debugging and testing19,285BSD-2-ClauseNetwork programming h3lisH3LIS Accelerometer/IMU679MIT h3oA Rust implementation of the H3 geospatial indexing system.1,480,541BSD-3-ClauseNo standard libraryScience::Geospatial h3o-bitLow-level library for H3 indexes' bit twiddling.1,050,337BSD-3-ClauseNo standard library::No dynamic allocationScience::Geospatial h3o-cliA CLI app that exposes most of the h3o API for scripting.14,074BSD-3-ClauseScience::Geospatial h3o-iceFrozen{Map,Set} for H3 cells, based on finite state transducers.46,381BSD-3-ClauseData structures h3o-mvtGenerate MVT tiles from set of H3 cells.70,346BSD-3-ClauseScience::Geospatial h3o-zipA compression scheme tailored for H3 cell indexes50,247BSD-3-ClauseAlgorithms h3ronHigh-level rust API for H3273,078MIT h3ron-graphGraph algorithms on edges of th3 H3 spatial indexing system8,881MIT h3ron-h3-sysbindgen-generated lowlevel bindings for statically linked libh3277,165MIT h3ron-ndarrayIntegration with the ndarray crate to generate H3 cells from raster data (using gdal, ...)21,258MIT h3ron-polarsIntegration of the h3 geospatial indexing system with polars dataframes5,277MIT h3rpch3rpc401MIT h3sessionHTTP/3 frame parser and QPACK header decompression for stream-level data1,997MIT OR Apache-2.0 h3xPeer-to-peer DHTTP/3 transport over QUIC1,730Apache-2.0AsynchronousNetwork programming h3xupA file-level updater tool for (primarily) Windows applications.2,461MIT h3xyHex file processing library & CLI (HexView alternative/replacement).115MITCommand line utilities h4xWIP2,046MIT h4x_coreWIP2,673MIT h4x_reHacky Regex's8,009WTFPL h5-tournaments-apiAPI for HOMM5 tournaments7,524MIT h57bankA command line tool for keeping track of people's balances at the 57North Snack Bank2,750MIT h5i-db-cliNon-interactive CLI for h5i-db16Apache-2.0 h5i-db-coreVersioned Arrow/Parquet storage kernel for h5i-db (no query engine dependency)23Apache-2.0 h5i-db-observabilityLightweight performance-report and workload-telemetry contracts for h5i-db23Apache-2.0 h5i-db-queryDataFusion query layer for h5i-db21Apache-2.0 h5i-db-uiLocal review UI for h5i-db: versions, snapshots, and mutation-plan approval18Apache-2.0 h5inspectA terminal based HDF5 file inspector114MITCommand line utilitiesScience h5peekA CLI tool for inspecting HDF5 file structures and metadata73MITCommand line utilitiesScience h5rioA simple HDF5 IO library88GPL-3.0 h5rio_macrosUseful macros for the h5rio crate113GPL-3.0 h5vA terminal HDF5 viewer with matrix/chart/image previews, compound schemas, and scripting1,376Apache-2.0 h5v-macrosProc-macro helpers for h5v theme and symbol catalogs225Apache-2.0 h8rk9s but for haproxy1,728MIT h_encryptA simple encrpytion/decryption library.7,530MITCryptography h_hangulKorean Characters1,522MIT h_imagepixel perfect drawing library written in Rust using only CPU1,586MIT h_matA type-safe heterogenous matrix type7,340Unlicense h_mathA Rust library for simple and advanced mathematical computations.1,242MITMathematicsScience h_modalsA leptos component library using tailwindcss for basic modals.22,788MIT h_test_crate_hello_worldA Simple Hello World Crate1,227Apache-2.0 h_timeTime/Date/Calendar library for Rust1,662MIT haHa provides core structs and traits for programming with higher order structures in Rust1,969MIT ha-agent-rsA simple Home Assistant agent written in Rust4,777MIT ha-clientA simple and type-safe Rust client library for Home Assistant API22MITAPI bindingsHardware support ha-ndarrayA hardware-accelerated n-dimensional array11,707Apache-2.0Data structuresHardware support ha-registryHigh Availability Container Registry1,300EUPL-1.2Command line utilities ha-rsA command-line interface (CLI) tool for interacting with Home Assistant.48MIT ha-utilsMy utility crate2,295AGPL-3.0 ha_apiThis is a library for connecting to the Home Assistent API1,832Apache-2.0 ha_proxy_protocolHAProxy protocol implementation130BSL-1.0Network programming haagentiNext-generation compression library with LZ4, Zstd, Brotli, and Deflate support849MIT OR Apache-2.0CompressionEncoding haagenti-adaptiveAdaptive precision scheduling for diffusion inference24MIT OR Apache-2.0AlgorithmsScience haagenti-autooptSelf-optimization and auto-tuning for inference pipelines104MIT OR Apache-2.0AlgorithmsDevelopment tools::Profiling haagenti-brotliBrotli compression for Haagenti1,000MIT OR Apache-2.0CompressionEncoding haagenti-coreCore traits, types, and streaming API for Haagenti compression library2,307MIT OR Apache-2.0CompressionEncoding haagenti-cudaCUDA GPU decompression kernels for Haagenti tensor compression465MIT OR Apache-2.0CompressionHardware support haagenti-deflateDeflate, Zlib, and Gzip compression for Haagenti1,003MIT OR Apache-2.0CompressionEncoding haagenti-distributedDistributed inference across multiple nodes with tensor parallelism103MIT OR Apache-2.0ConcurrencyNetwork programming haagenti-fragmentsCross-model fragment sharing library for HoloTensor compression422MIT OR Apache-2.0CompressionScience haagenti-grpcgRPC server for Haagenti compression service23MIT OR Apache-2.0CompressionNetwork programming haagenti-hctHaagenti Compressed Tensor (HCT) format with HoloTensor holographic compression1,280MIT OR Apache-2.0CompressionEncoding haagenti-importanceML-guided fragment importance scoring for intelligent model loading190MIT OR Apache-2.0AlgorithmsScience haagenti-latent-cacheLatent caching for similar prompts with semantic similarity search25MIT OR Apache-2.0CachingScience haagenti-learningContinuous learning and online adaptation for models102MIT OR Apache-2.0AlgorithmsScience haagenti-lz4LZ4 and LZ4-HC compression for Haagenti1,412MIT OR Apache-2.0CompressionEncoding haagenti-mergingModel merging techniques including TIES, DARE, and evolutionary merge23MIT OR Apache-2.0AlgorithmsScience haagenti-mobileMobile deployment support for iOS (CoreML) and Android (NNAPI)105MIT OR Apache-2.0Embedded developmentHardware support haagenti-networkCDN-based network streaming for HoloTensor fragments190MIT OR Apache-2.0AsynchronousNetwork programming haagenti-neuralNeural compression using learned codebooks for 10x model compression24MIT OR Apache-2.0CompressionScience haagenti-pythonPython bindings for Haagenti tensor compression library25MIT OR Apache-2.0 haagenti-serverlessServerless deployment with cold start optimization and GPU memory management105MIT OR Apache-2.0AsynchronousCaching haagenti-simdSIMD-accelerated primitives for Haagenti1,636MIT OR Apache-2.0CompressionHardware support haagenti-sparseSparse attention masks for prompt-aware computation reduction23MIT OR Apache-2.0AlgorithmsScience haagenti-speculativeSpeculative fragment loading based on keystroke intent prediction103MIT OR Apache-2.0AsynchronousCaching haagenti-streamAdvanced streaming compression utilities for Haagenti923MIT OR Apache-2.0AsynchronousCompression haagenti-streamingReal-time streaming generation with progressive preview display103MIT OR Apache-2.0AsynchronousMultimedia haagenti-webgpuWebGPU deployment for browser-based model inference102MIT OR Apache-2.0WebAssemblyWeb programming haagenti-zstdZstandard-inspired compression for Haagenti (internal format, not Zstd-compatible)1,495MIT OR Apache-2.0CompressionEncoding haala small system fetch tool36Unlicense haalkaergonomic reactive Bevy UI library powered by FRP signals15,577MIT OR Apache-2.0AsynchronousGame development haalka_futures_signals_extvendored version of MoonZoon's futures_signals_ext, as it is yet to be released as a crate4,707MIT OR Apache-2.0 haalka_futures_util_extvendored version of MoonZoon's futures_util_ext, as it is yet to be released as a crate3,620MIT OR Apache-2.0 hab-rsRust rule engine for openHAB3,457MIT hab-rs-api-clientBindings for openHAB REST API2,011MITAPI bindings habit_tracker_parserA parser for habit tracking records3,419MIT habiticaUnnoficial Habitica Rust Cli1,446MIT habitica-apiRust bindings for the Habitica API, using Reqwest1,675non-standard habitica-cliUnnoficial Habitica Rust Cli7,711MIT habitica_rust_clientUnnoficial Habitica Api Rust Client14,129MIT habitica_weekly_reportGet reports of your performance on Habitica, straight to your inbox!1,624MIT haboardA cross-platform GPU-accelerated 2D sprite engine10MPL-2.0 hacHardware Accelerated Computing API for portable high performace computing with the GPU.2,986MIT hac-cliyour handy API client, on your terminal!3,118MITCommand line utilities hac-clientyour handy API client, on your terminal!2,777MITCommand line utilities hac-colorsyour handy API client, on your terminal!3,140MITCommand line utilities hac-configyour handy API client, on your terminal!3,409MITCommand line utilities hac-coreyour handy API client, on your terminal!3,156MITCommand line utilities hacam-lib-rsA cross-platform userspace driver for interacting with the Huawei EnVizion 360 camera (Huawei CV60)372Apache-2.0 OR BSD-2-ClauseComputer vision hachetPlaceholder1,610MIT hachi64哈吉米64 编解码器 - 使用64个中文字符进行 Base64 风格的编码和解码38MITEncodingNo standard library hack......601MIT hack-assemblerAn assembler for the Hack assembly language1,754MIT hack-browser-dataName reservation for the HackBrowserData Rust port (work in progress). See the repository.17Apache-2.0Command line utilities hack_asmA Nand2Tetris Hack Assembly Language Assembler written in Rust10,907MIT hack_logA minimalistic logging formatter2,167MIT hackable_notesHackable, lightweight & extensible note-taking app2,471non-standard hackage-packA tool that helps you to turn in one command a Rust crate into a Haskell Cabal library7,043MIT OR Apache-2.0 hackamoreJIT, policy-scoped credential proxy for untrusted AI agents16MIT hackamore-agentConsumer-side provisioning for hackamore: fetch the provision doc and configure stock tools41MIT hackamore-controlControl plane for hackamore: policy registry, token minting, credential vault, audit sink46MIT hackamore-gatewayData plane for hackamore: Host-routed, policy-enforcing streaming reverse proxy33MIT hackamore-modelsProtocol and contract types for hackamore: Action, Verdict, Policy, audit and mint wire types110MIT hackamore-policyPure policy engine for hackamore: decide(Action, Policy) -> Verdict, no I/O46MIT hackathonTetcore Hackathon - Build AI-powered blockchain projects22MIT hackathon_question1A hackathon task.1,676MIT/Apache-2.0 hackatimeTerminal CLI for viewing Hackatime stats with OAuth login90MITCommand line utilities hackatime-heatmapEasy to set up Hackatime coding activity heatmap for your profile!216AGPL-3.0-only hackatime-lsA dead-simple language server that sends code tracking heartbeats to hackatime43CECILL-2.1Development tools hackatonA tool to fetch system information2,226MITCommand line utilities hackbrowserdataReserved alias of hack-browser-data (the no-separator spelling). See the repository.17Apache-2.0Command line utilities hackchatHack.chat client library7,912MIT hackclub_auth_apia crate to interact with hackclubs oauth api, its unoficial :p761MITDevelopment tools hackdbAn extensive hackers' databaes with robust templates and toolkits to kickstart a hackathon.1,453Apache-2.0Command line utilitiesDevelopment tools hackdose-serverA server to control smart plugs using data from smart meters12,939MIT OR Apache-2.0 hackdose-sml-parsera parser for the smart message language spoken by smart meters18,015MIT OR Apache-2.0 hacker-newsA library to interact with Hacker News.5,445MIT OR Apache-2.0 hacker-news-cliA command line interface to interact with Hacker News.1,590MIT OR Apache-2.0 hacker-news-clientAsync client for the Hacker News Firebase API.20MITAPI bindingsWeb programming::HTTP client hacker-news-mcpA Rust MCP server for Hacker News — browse stories, read comments, search, and view user profiles39MITCommand line utilities hacker-news-tuiA delightful terminal UI for browsing Hacker News106MITCommand line utilities hacker-newsfeedApp for reading Hacker News1,546MIT OR Apache-2.0AccessibilityGUI hacker-rsHacker News API bindings for rust.5,010MIT OR Apache-2.0API bindings hacker_textA really dumb library that generates bogus lines of "hacker text".2,727non-standard hackeraudit-api-commonCommon REST API definition for Hacker Audit2,359MPL-2.0/MIT/Apache-2.0 hackeraudit-cliReference command line client for Hacker Audit1,980MPL-2.0/MIT/Apache-2.0 hackerlogA simple logging tool with no fluff for hackers.6,419MIT hackernews-mcpA stdio Model Context Protocol (MCP) server exposing read-only Hacker News tools — browse story feeds, read capped comment trees,…20MITAPI bindingsCommand line utilities hackernews-typesRust types representing items returned from the Hacker News API4,902MIT hackernews_tuiA Terminal UI to browse Hacker News43,281MIT hackertyperA local CLI alternative for hackertyper.net47MIT hackflightSimple flight-control software for makers in Rust9,587MIT hackfnFake implementation of `std::ops::Fn` for user-defined data types.12,571MIT OR Apache-2.0 hackgt-nfcA portable Rust library for working with HackGT's NFC badges19,177MIT hackmdRust client library and CLI for HackMD56MITAPI bindingsCommand line utilities hackmd-api-client-rs🦀📝 A HackMD Rust API client for rustacean & friends1,156MITAPI bindingsWeb programming::HTTP client hackmd-rsRust HackMD client2,740MIT hackmeTrack the submissions of a Hacker News user and notify on comments1,475Apache-2.0Command line utilitiesWeb programming hacknewshack news2,862MIT hacknoteCLI for HackNote — manage notes from the command line118MITCommand line utilities hacknowA utility for automation of project directories and switching workspaces1,998MITCommand-line interfaceCommand line utilities hackrfRust bindings for libhackrf3,325MIT