All 305,250 crates, alphabetically

hdr-sundialHDR Sundial — set Windows SDR content brightness from the sun's position35MIT OR Apache-2.0Command line utilitiesOperating systems::Windows APIs hdr10plusHDR10+ metadata parsing and writing33,151MIT hdrcopierA tool for copying colorspace and HDR metadata from one file to another11,186MIT hdrcopier-cliA tool for copying colorspace and HDR metadata from one file to another977MIT hdrcopier-coreA tool for copying colorspace and HDR metadata from one file to another1,257MIT hdrepresentationHYDRAulic Damnation's representation of filesystem for fuzzing21,484MIT hdrfixA tool for mapping HDR screenshots to SDR6,955MITCommand line utilitiesMultimedia::Images hdrhistSmall footprint hdr histogram89,767MIT hdrhistogramA port of HdrHistogram to Rust101,047,074MIT/Apache-2.0Data structuresDevelopment tools::Profiling hdrhistogram-cBinding to HdrHistogram_c library7,986MIT hdrldrRadiance HDR loader in Rust8,744WTFPL hdrsRust native client to hdfs692,834Apache-2.0Command line utilities hdrsampleA port of HdrHistogram to Rust81,349MIT/Apache-2.0Data structuresDevelopment tools::Profiling hdsHeapless Data Structures for `no_std` environments5,909Apache-2.0 OR MITData structuresEmbedded development hds_console-apiThis is a test crate, do not use.3,453MIT hds_console-subscriberThis is a test crate, do not use.4,011MIT hds_test0A dummy crate for testing publish automation.5,234MIT hds_tokio-consoleThis is a test crate, do not use.5,181MIT hdtLibrary for the Header Dictionary Triples (HDT) RDF compression format.312,620MITCompressionFilesystem hdvHeader-determined values11,880MIT hdv_derive`proc_macro_derive` for hdv8,125MIT hdwalletHierarchical deterministic wallet (BIP-32)707,254MIT hdwallet-bitcoinBitcoin BIP-32 key derivation16,928MIT hdwallet-fcHierarchical deterministic wallet12,148MIT OR Apache-2.0 hdwallet-filecoinHD Wallet for Filecoin, including key generation, derivation and signing3,858MIT hdwallet-rusthdwallet library1,488MIT hdwallet_rsHD wallet implementation for Solana built with Rust1,650MITCryptography::Cryptocurrencies heA frontend agnostic hex editor.2,218MIT/Apache-2.0 he-coreA frontend agnostic hex editor.1,734MIT/Apache-2.0 he-core-libLibrary module for he-core.2,811MIT/Apache-2.0 he-ringA library that provides fast implementations of rings commonly used in homomorphic encryption, built on feanor-math.12,751MIT he-rpcRPC definitions for he-core.1,751MIT/Apache-2.0 he-rsHomomorphic Encryption in Rust.1,479Apache-2.0 he_diDependency Inversion / Dependency Injection / Inversion of control container for Rust6,927MIT/Apache-2.0Rust patterns he_di_deriveCode generation for he_di dependency injection / inversion of control framework6,816MIT/Apache-2.0Rust patterns he_di_internalsCommon code for he_di crates3,807MIT/Apache-2.0Rust patterns headCommon types with inline headers, such as HeaderVec for Vec.4,525MIT OR Apache-2.0Data structuresEmbedded development head-emptyDefine parts of your configuration schema throughout your codebase1,741Apache-2.0 OR MITConfiguration head-rsAn implementation of the GNU head command in Rust2,772MIT head-tail-iterAn iterator that repeatedly splits head & tail9,572MIT OR Apache-2.0No standard libraryNo standard library::No dynamic allocation head_tailnie jedzcie ostrego1,516MIT headacheA type safe HTML templating engine based on standard Rust datastructures inspired by hiccup670LGPL-3.0-or-laterGUITemplate engine headcrabA modern Rust debugging library.1,747MIT OR Apache-2.0 headerheader1,023MIT OR Apache-2.0 header-configRuntime parser for hierarchical configurations using Markdown-style headers4,703MIT OR Apache-2.0Parsing toolsText processing header-formatTyped, generic documents of named sections over markdown-inspired headers, without an enum or a boxed trait object19MIT OR Apache-2.0 header-parsingSimplifies parsing the headers of markdown inspired file formats7,175MIT OR Apache-2.0 header-plzHeader for the ParsePlz ecosystem13,354MIT header-sliceDefinitions for slices with headers, and a vec-like type with a header allocated inline.6,537non-standard header-vecVector with user-specified header, length, capacity, and array elements all stored on the heap together8,039MITNo standard library header-writerPost-AI header injector: ensures Unlicense + Contributors in source files14Unlicense header_hostx-forwarded-host or host from http HeaderMap4,430MulanPSL-2.0 header_mapheader_map5,980MulanPSL-2.0 headerstyped HTTP headers140,037,803MITWeb programming headers-accept🤝 The missing `Accept` implementation for `headers::Header`369,759MITNetwork programmingWeb programming headers-accept-encodingHypper typed HTTP headers with Accept-Encoding + zstd support53,514MITWeb programming headers-client-ipA header for X-Real-IP compatible with headers crate2,922non-standard headers-content-md5typed Content-MD5 header5,002MITWeb programming headers-coretyped HTTP headers core trait137,314,461MIT headers-derivederive(Header)198,593MIT headers-exttyped HTTP headers62,867MIT headers-remakeIt is a remake of the headers2,744MIT headers-retry-aftertyped accessible `Retry-After` HTTP header112MITWeb programming headers-rsprint a simple commented-out 3-liner header with a custom name (passed as a command line argument1,306MIT OR Apache-2.0 headers-utilcore typed HTTP headers system1,950MIT headhunter-bindingsRust bindings to the Headhunter API (https://hh.ru)2,196MITAPI bindings headhunter-cliTool for Headhunter (https://hh.ru) that can automatically update resumes1,608MITCommand line utilities headifierAdd headers to your entire project directory!7,331MIT headjA utility that converts input JSON arrays into valid JSON that contains only a subset of the elements2,939MIT headjackMatrix Bot Framework. Jack into Matrix.8,171MIT headlampDependency-graph based test runner in Rust that supports Rust, Python, and JavaScript.145MITCommand line utilitiesDevelopment tools::Testing headless-screenshotRender a wgpu scene to an offscreen texture and read it back as an image or PNG, with no window or event loop19MIT OR Apache-2.0GraphicsRendering headless-talkHeadless talk implementation8,859Apache-2.0 headless_admin_list_typeA client and model library for Liferay DXP's list type api, partially auto generated by open-api-generator.2,188MIT OR Apache-2.0 headless_batch_engineA client and model library for Liferay DXP's batch engine api, auto generated by open-api-generator.3,160MIT OR Apache-2.0 headless_browserA scalable application for managing headless Chrome instances with proxy and server capabilities.11,548MITCommand line utilitiesWeb programming headless_browser_libA library providing a Chrome proxy API for managing Chrome instances in cloud environments.36,071MITCommand line utilitiesWeb programming headless_chromeControl Chrome programmatically2,730,239MIT headless_chrome_forkControl Chrome programatically4,806MIT headless_chrome_newControl Chrome programatically2,899MIT headless_chrome_operation_mapheadless chrome operation map13,911MIT headless_chrome_xiaoaiControl Chrome programatically1,342MIT headless_commonShared types useful for making requests to various Liferay headless APIs4,821MIT OR Apache-2.0 headless_webviewHeadless Webview Traits4,449Apache-2.0 OR MIT headless_webview_engineHeadless Webview implementation for Linux - WIP3,787Apache-2.0 OR MIT headroomRENAMED: this crate is now `baken` (Bake'n Deck). Install with `cargo install baken`.526MITCommand line utilitiesMultimedia::Audio headsonBudget‑constrained JSON preview renderer5,223MITCommand line utilitiesParsing tools headtailhead and tail simultaneously7,390MIT OR Apache-2.0Command line utilities headwaters-clientAsync Rust client for the Headwaters read API (lineage browse, graph, search, tags, stats)85Apache-2.0API bindingsDatabase interfaces headwaters-protoGenerated protobuf types and ConnectRPC stubs for the Headwaters read API (headwaters.read.v1) and OpenLineage event model…82Apache-2.0API bindingsDatabase interfaces headwayAn ergonomic progress bar library8,390MITCommand-line interface headwindA Kubernetes operator to automate workload updates based on container image changes47MIT healA template for creating Rust open-source repo on GitHub1,549MIT/Apache-2.0 heal-cliHook-driven Evaluation & Autonomous Loop — code-health harness CLI for AI coding agents84MIT OR Apache-2.0Command line utilitiesDevelopment tools healm**He**ap **al**located **me**rkle tree4,063MITCryptographyData structures healpixRust implementation of the HEALPix tesselation.6,606MIT OR Apache-2.0AlgorithmsScience healslutActivates intimate hardware in response to screen contents.1,694MPL-2.0 healthHealth reporting and checking library118,682MIT OR Apache-2.0Rust patternsWeb programming::HTTP server health-backendDaily wellness check‑in that handles PHI securely.23MITCryptographyWeb programming health-economicsHealth economics models, structs, calculations, and examples.15MIT OR Apache-2.0 OR BSD-3-Clause OR GPL-2.0-only OR GPL-3.0-onlyData structuresFinance health-kit北京健康宝 Health Kit2,852MIT health_checkServer health check library1,768MIT healthbox3rsUnofficial rust bindings for Healthbox3 REST API1,575GPL-3.0-or-later healthcard_rustRead data from German public health insurance cards (Elektronische Gesundheitskarte eGK)4,310MIT healthcare-voc-engineHealthcare VOC compliance calculator engine — computes VOC exposure, OSHA PEL comparison, and multi-jurisdiction regulatory…22MITCommand line utilitiesScience healthcheckComing Soon418Apache-2.0 healthcheck-rsA Rust executable for simple HTTP check status.4,502MITCommand line utilities healthchecksSimple library to notify healthchecks.io from inside applications31,674MIT/Apache-2.0 healthchecks-monitormonitor runs a given command and reports its result to https://healthchecks.io14,986MIT/Apache-2.0 healthdogHelper program that connects external periodic heathchecks with systemd's watchdog support3,145Apache-2.0 healthkit-to-sqlite-cliCommand-line tool to convert Apple HealthKit data to a SQLite database.5,699MIT OR Apache-2.0Database interfacesScience healthpoint-cliCommand-line interface for the Healthpoint API.18Apache-2.0 healthpoint-clientAsync HTTP client for licensed Healthpoint API access.38Apache-2.0 healthpoint-coreCore domain model, queries, provenance, and provider traits for Healthpoint tooling.76Apache-2.0 healthpoint-exportExport helpers and provenance manifests for Healthpoint records.30Apache-2.0 healthpoint-fhirFHIR R4 mapping utilities for Healthpoint resources.68Apache-2.0 healthpoint-mcpRead-only MCP server for Healthpoint directory access.19Apache-2.0 healthpoint-osd-adapterFuture open_social_data bridge for Healthpoint tabular views.29Apache-2.0 healthpoint-testkitSynthetic fixtures and test helpers for healthpoint-rs.43Apache-2.0 healthscriptA simple DSL for checking the health of a service using HTTP, TCP, ICMP (ping), and more.5,605MIT healthscript-cliCLI for healthscript, a simple DSL for checking the health of a service using HTTP, TCP, ICMP (ping), and more.1,359MIT healthstatusLive terminal dashboard for machine health.22MITCommand line utilities healthy-monitorAutomatically adjust monitor brightness and color temperature based on ambient light or weather2,429MITCommand line utilities heapHeap operations on slices14,417MIT OR Apache-2.0 heap-apheap access point for anyone in rust, called to c1,068MIT OR Apache-2.0 heap-arrayAn Implementation of a variable length array, with its main benefit over `Vec` is taking up less space14,479MIT heap-bytesLightweight size calculation for Rust data structures.20MIT OR Apache-2.0AlgorithmsData structures heap-inspectorheap-inspector5,439AGPL-3.0 heap-rsFast CLI for analyzing Java .hprof heap dumps with retained sizes and retainer analysis100MITCommand line utilitiesDevelopment tools heap-sliceBasically `Box<[T]>` but smaller stack size1,163MIT OR Apache-2.0 heap-vecVector that stores capacity and len on the heap, to reduce stack size of empty vecs1,817MIT heap1The simplest possible heap.114MIT OR Apache-2.0 heap_arrAllocate fixed-size arrays directly on the heap, bypassing stack allocation limits4,010MITNo standard library heap_do_not_usedo not use this crate it is for demo purposes only1,767MIT OR Apache-2.0 heap_linear_arraySimple linear memory array stored on the heap with a size determined at runtime.23MIT heap_matrixA dynamically sized multidimensional array implementation that avoids memory fragmentation and redundancy43MIT heaparrayFlexible support for dynamically-sized types, using heap-allocated array of structs21,867MITData structuresMemory management heapbufFixed size heap buffer with optional custom alignment, ref counting and custom destructor logic.9,243MIT OR Apache-2.0Memory management heapifyConvenience functions to turn slices into max-heaps.809,292MIT OR Apache-2.0AlgorithmsNo standard library heapixA library providing heap data structures8,803MITData structures heapless`static` friendly data structures that don't require dynamic memory allocation110,984,546MIT OR Apache-2.0Data structuresNo standard library heapless-bytesNewtype around heapless byte Vec with efficient serde.298,605Apache-2.0 OR MITEmbedded developmentEncoding heapless_graphsImplementation of composable graphs for no_alloc environments2,481Apache-2.0Data structuresNo standard library heapless_matrixThis crate provides a simple and efficient implementation of a matrix data structure in Rust. It offers functionality for…7,123BSL-1.0 heapless_topono-std topological sort using `heapless`4,873MIT heapletA small, in-process, Redis-inspired in-memory store for Rust.27MITCachingConcurrency heapmonA heap monitor debugging utility for Rust programs4,508Apache-2.0 heapnotizeA smart pointer type for memory allocation on the stack.6,976GPL-3.0-or-laterMemory managementNo standard library heapoVery simple heap implementations in Rust363MIT OR Apache-2.0 heappSome heap operations on slice1,659non-standardAlgorithms heapprofile-to-pprofConvert Node V8 `.heapprofile` (Inspector `HeapProfiler.SamplingHeapProfile`) into gzip'd pprof with alloc_objects/alloc_space…112Apache-2.0Development tools::Profiling heapqPriority Queue with scoring function2,719MITAlgorithmsData structures heapsizeInfrastructure for measuring the total runtime size of an object on the heap2,425,785MIT/Apache-2.0 heapsize_deriveAutomatically generating infrastructure for measuring the total runtime size of an object on the heap51,870MPL-2.0 heapsize_pluginAutomatically generating infrastructure for measuring the total runtime size of an object on the heap82,184MPL-2.0 heapsterA lightweight wrapper enhancing the global allocator with useful metrics.981CC0-1.0 OR MITDevelopment tools::ProfilingMemory management heapswapHeapswap's server-side engine1,849Apache-2.0 heapswap_macrosHeapswap's macros3,098Apache-2.0 heapswap_schemasHeapswap's Cap'n Proto schemas1,882Apache-2.0 heapszA crate for calculating the heap usage of a data structure.5,397MIT heapsz-deriveProcedural macros for `heapsz`4,142MIT heaptrackEasily track heap usage with this allocator wrapper.13,532MIT heaptrailProduction-grade leak hunting at the CLI for JVM/Android hprof dumps: retained-size dominators, leak suspects, R8 mapping…229Apache-2.0Command line utilities heapzHeap/Priority Queue implementations10,302non-standardAlgorithmsData structures hearsayA message broker and client for topic-based pub/sub messaging over TCP, built on tokio, with broker bridging, websockets, process…1,221MIT OR Apache-2.0AsynchronousNetwork programming heartHypermedia-based web development of the 1990 future!18,118Fair heart-patched-maudCompile-time HTML templates. (patched for HEART - do not use)1,610MIT OR Apache-2.0Template engine heart-patched-maud_macrosInternal crate. Please use 'maud' instead.1,878MIT OR Apache-2.0 heart-rateheart-rate477MIT heart-stringsQuickly get random heart emojis to copy!1,013UnlicenseCommand line utilitiesText processing heartbeatA high-performance heartbeat client.3,136MIT heartbeat-rsHeartbeat pattern for persistent AI CLI sessions — stop hook (heartbeat-stop) and PTY launcher (heartbeat-launch)709MITCommand line utilities heartbeat-serverA simple heartbeat implementation that reports to telegram1,667non-standard heartbeat-streamAdd a heartbeat to an existing stream19MIT heartbeat-watchdogA versatile heartbeat watchdog2,513MIT heartbeats-simpleRust abstractions for heartbeats-simple-sys102,032MIT/Apache-2.0 heartbeats-simple-sysFFI bindings to heartbeats-simple125,394MIT/Apache-2.0 heartbit-coreThe Rust agentic framework — agents, tools, LLM providers, memory, evaluation.607MIT OR Apache-2.0AsynchronousDevelopment tools heartfelt# Heartfelt A simple Rust library for creating DSLs (Domain Specific Languages) ## Roadmap This is still pretty much a work in…9,550MIT hearthPlaceholder for a heim fork.1,567Apache-2.0 OR MIT hearth-interconnectProvides interconnect between Hearth and Charcoal2,225MIT hearth-sdkHearth identity platform Rust SDK634MIT hearthstoneA Hearthstone simulator written in Rust1,541MIT heartlessa card game inspired by mshearts1,890MIT/Apache-2.0Command line utilitiesGames heartless_assetsassets of heartless game2,010MIT/Apache-2.0Games heartless_tkheartless_tk, a card game similar with mshearts1,554MIT/Apache-2.0Games heartsCards, tricks, and a rules-driven state machine for the card game Hearts85Apache-2.0Game developmentGames hearts-engineHearts bots: heuristic and Monte Carlo strategies over an information-hygienic view12Apache-2.0Game developmentGames heartwoodAn experimental cross-platform UI state management framework inspired by React libraries such as Jotai/Recoil2,802MIT heartyCheck HOI4 mod files for missing localisations212MITCommand line utilities heatPlaceholder package for heat1,519MIT OR Apache-2.0 heat-sdkTracel Heat SDK.1,680MIT OR Apache-2.0Development tools heat-sdk-cliTracel Heat SDK CLI.1,464MIT OR Apache-2.0Command-line interfaceCommand line utilities heat-sdk-cli-macrosMacros for Tracel Heat SDK CLI.1,464MIT OR Apache-2.0Command-line interfaceCommand line utilities heat-spectralHeat diffusion on graphs — equilibration time, spectral filtering, Fiedler value18MIT heatersimple sitemap-based cache-warming with header variations.16,900MITCommand line utilitiesDevelopment tools heatflow...1,552MPL-2.0 heathplaceholder1,829ISC heathena WASM-compatible GUI engine that is agnostic of platform, backend, language, and markup1,565MPL-2.0 heatmanCreating heatmap image from given CSV file56non-standardCommand line utilitiesGraphics