BROWSE A-Z

All 305,250 crates, alphabetically

Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.

hexsmithA reserved crate name for the forthcoming hexsmith library.14MIT OR Apache-2.0 Encoding hexspecA dsl for creating and verifying byte buffers4,631non-standard hexspec-cliA dsl for creating and verifying byte buffers (command line version)3,936non-standard hexspellDependency-free Rust library for parsing and patching PE, ELF, and Mach-O executables with a 1:1 on-disk API4,337MIT Development tools Parsing tools hexstackHex Stack - A simple stack to create modern backend applications that are fast and have the best in class developer experience.3,983MIT Command line utilities Development tools::Build Utils hexstringAn utility library for handling hexadecimal string7,091MIT hextA binary file markup language5,235ISC Encoding Parsing tools hext-boardsA small library that renders hexagonal boards with text on the terminal7,279MIT Command line utilities hextacyLibrary containing various utilities to aid server development with hexagonal architecture5,176MIT hextacy_deriveLibrary containing derive macros for the hextacy crate2,201MIT hextazyA colorful hexadecimal editor2,293MIT Command line utilities hextileHandles coordinate math and other logic for hexagonal game maps1,545GPL-3.0-or-later Data structures Game development hexto256Convert HEX Colors to Xterm256 colors2,734MIT hextoolA simple command line tool to convert hex to string and string to hex5,651MIT Command line utilities hextralComprehensive neural network library with dataset loading, batch normalization, 9 activation functions, 5 loss functions,…9,769MIT OR Apache-2.0 Algorithms Asynchronous hextreeLocation to value mapping.9,742MIT OR Apache-2.0 Data structures Science hextuiA minimal hex file viewer22MIT hextuneLightweight terminal music player37MIT Command line utilities Multimedia::Audio hexutilA macro to implement common traits to work with hexadecimal values7,372MIT OR Apache-2.0 Encoding No standard library hexvaultCascading cell-partitioned encryption architecture.58MIT OR Apache-2.0 Cryptography Data structures hexviewA TUI Hex viewer6,820MIT OR Apache-2.0 Command line utilities hexviewersimple repl to view binary and hex representation of an integer1,672MIT hexxHexagonal utilities137,947Apache-2.0 Data structures Game development hexx_moreExtensions to the `hexx` crate.1,624MIT hexxdStandalone `xxd` replacement intended for Neovim users6,829MIT Command line utilities Development tools hexxdumpA simple, configurable tool for generating hex dumps6,039MIT Development tools::Debugging hexxerA hexdump cli tool2,124MIT hexxyHexxy all over the place!697CC0-1.0 hexyA rust library for printing hexy hex dumps with colors based on the byte values6,950GPL-3.0-only hexy-compatcleanroom-compatible slash-flag CLI built on hexy-core.98MIT hexy-coreCore library for hex-file parsing, transforms, and export.158MIT hexylA command-line hex viewer96,510MIT/Apache-2.0 Command line utilities hexzA fork of hecs, for my personal use1,645MIT OR Apache-2.0 Data structures Game engines hexz-cliCLI tool for managing Hexz deduplicated archives323Apache-2.0 Compression Filesystem hexz-commonCommon utilities and configuration for Hexz1,380Apache-2.0 Compression Filesystem hexz-coreCore engine for high-performance data streaming and compression1,285Apache-2.0 Compression Filesystem hexz-fuseFUSE filesystem adapter for Hexz snapshots431Apache-2.0 Compression Filesystem hexz-opsHigh-level snapshot operations: pack, write, inspect, sign488Apache-2.0 Compression Filesystem hexz-serverHTTP server for streaming Hexz data blocks427Apache-2.0 Compression Filesystem hexz-storeStorage backends for Hexz snapshots (local file, HTTP, S3)887Apache-2.0 Compression Filesystem hexz-vfsPlatform-agnostic virtual filesystem logic for Hexz181Apache-2.0 Compression Filesystem hey-cliGemini ai based cli3,034MIT hey-dummyA dummy package for testing purposes1,434MIT hey-jarvisJarvis at your service.1,488MIT hey-rsA minimal command-line copilot with streaming and syntax highlighting1,448MIT Command line utilities hey_chat_gptA proc-macro to delegate implementation to the ChatGPT API. ChatGPT APIに実装を代行してもらうマクロです。4,747MIT Development tools hey_listenAn event-dispatcher-collection offering async, sync, parallel, and prioritised solutions!19,313ISC Concurrency heybeA simple YouTube downloader with multi-resolution support using yt-dlp42MIT Command line utilities Multimedia::Video heygenHeyGen API from Only Finance LTDA3,165MIT heygptA simple CLI tool that uses ChatGPT API to respond to messages5,588MIT heyiwei何意味384MIT Command line utilities Text processing heylistenbattery notification service197MIT heyo-sdkRust SDK for the Heyo cloud sandbox API.130Apache-2.0 heyteaRust SDK for the heytea.dev location and wait-time API40MIT API bindings Web programming::HTTP client heytingComplex logical query answering over knowledge graph embeddings500MIT OR Apache-2.0 Algorithms Science heyyGemini ai based cli4,023MIT heyyySimple load tester1,054MIT hfCross-platform hidden file library and utility36,225Apache-2.0 OR MIT Command line utilities Filesystem hf-chat-templateRender Hugging Face chat_template (Jinja2) prompts byte-identically to transformers.apply_chat_template.313MIT OR Apache-2.0 Template engine Text processing hf-fetch-modelDownload, inspect, and compare HuggingFace models from Rust. Multi-connection parallel downloads plus safetensors and NPZ header…1,327MIT OR Apache-2.0 Network programming Science hf-hubRust client for the Hugging Face Hub API12,940,959Apache-2.0 hf-hub-enferThis crates aims ease the interaction with [huggingface](https://huggingface.co/) It aims to be compatible with…2,971Apache-2.0 hf-hub-simple-progressSimplified download callback for hf-hub3,751MIT hf-kernel-builderBuild Hugging Face Hub kernels137Apache-2.0 hf-memCLI to estimate inference memory requirements from the Hugging Face Hub2,615MIT OR Apache-2.0 hf-xetClient library and tooling for the Hugging Face Xet data storage system.502,572Apache-2.0 Artificial intelligence Asynchronous hf2Microsoft HID Flashing Library for UF2 Bootloaders20,737MIT/Apache-2.0 hf2-cliCLI for Microsoft HID Flashing Library for UF2 Bootloaders15,607MIT/Apache-2.0 Command line utilities Development tools hf2qPlaceholder for hf2q; full crate (CLI + lib workspace) ships at 0.1.0.18MIT OR Apache-2.0 Command line utilities Science hf2q-convertPlaceholder for hf2q-convert; full crate ships at 0.1.0 alongside hf2q v0.1.0.18MIT OR Apache-2.0 Science hf2q-corePlaceholder for hf2q-core; full crate ships at 0.1.0 alongside hf2q v0.1.0.19MIT OR Apache-2.0 Science hf2q-inferPlaceholder for hf2q-infer; full crate ships at 0.1.0 alongside hf2q v0.1.0.18MIT OR Apache-2.0 Science hfdt-rsA quite high-level safe no-std zerocopy zero-dependencies Open Firmware FDT DeviceTree's parsing library.21MIT Embedded development Hardware support hfetchSimple and configurable fetch written in Rust1,976MIT Command line utilities hffHierarchical File Format26,875non-standard hff-async-stdHierarchical File Format: async-std support.15,884non-standard hff-coreHierarchical File Format: core structure21,865non-standard hff-stdHierarchical File Format: synchronous support24,661non-standard hff-tokioHierarchical File Format: tokio support.15,961non-standard hfileHfile is a command-line interface (CLI) tool for generating hash values of files14,911BSD-3-Clause Command line utilities Cryptography hflowA lightweight concurrent task progress manager for CLI applications.22MIT Command-line interface Concurrency hfmA command line tool for managing your host file.2,399Apache-2.0 hfmnA flexible Huffman coding implementation1,801MIT OR Apache-2.0 Compression hfnHyper Function1,762Apache-2.0 hfq_rsoptimized for multithreading and enhanced performance using Polars for dataframe operations, designed to analyze circuit files…11,981MIT hfqcoa CLI software for hfq_rs4,894MIT hfqr_recvTrading order/market abstraction1,432MIT hframeShow HTML content "inside" your egui rendered application9,462MIT OR Apache-2.0 hfsHereditarily finite sets.4,814MIT OR Apache-2.0 Algorithms Mathematics hfs-readerA read-only parser for classic HFS (Hierarchical File System) disk images901GPL-3.0-or-later hfs_nfdHandle Apple's unique NFD-like Unicode normalization, which is used in HFS+, in Rust.11,997MIT Encoding Text processing hfs_pathsConverts Mac OS HFS paths into standard POSIX paths3,397MIT/Apache-2.0 hfsmHierarchical Finite State Machine (HFSM)1,265MIT OR Apache-2.0 Algorithms Rust patterns hfsplusRead-only HFS+ / HFSX filesystem parser3,737MIT Filesystem Parsing tools hfsplus-forensicForensic-grade, from-scratch Apple HFS+/HFSX reader — volume header geometry, catalog B-tree directory listing, and data-fork…640Apache-2.0 Filesystem Parser implementations hfss_fldAnsys HFSS `.fld` file parser7,019MIT hfstWrappers to libhfst via libhfst_c152GPL-3.0-or-later hfst-sysWrappers to libhfst (raw bindings to the c api)5,899GPL-3.0-or-later hftHigh Frequency Trading Framework214MIT hft-benchmarksHigh-precision benchmarking tools for high-frequency trading systems with nanosecond-level timing accuracy980GPL-3.0-or-later Algorithms Development tools::Profiling hft-channelSPMC broadcast channel for HFT and real-time systems603LGPL-3.0-or-later Concurrency Data structures hft-jobsAllocation-free job system for HFT and real-time systems431LGPL-3.0-or-later Concurrency Data structures hftbacktestA high-frequency trading and market-making backtesting tool accounts for limit orders, queue positions, and latencies, utilizing…23,242MIT Algorithms Finance hftbacktest-derivehftbacktest: [internal] helper derive proc-macros4,741MIT hftwoA library for working with the HF2 protocol.4,836MPL-2.0 hfxCore types and manifest models for HFX (HydroFabric Exchange) datasets.296MIT OR Apache-2.0 hfx-cliCLI and library for validating HFX (HydroFabric Exchange) datasets.65MIT OR Apache-2.0 hfx-coreCore types and manifest models for HFX (HydroFabric Exchange) datasets.336MIT OR Apache-2.0 hfx-validatorCLI and library for validating HFX (HydroFabric Exchange) datasets.68MIT OR Apache-2.0 hgParser for the Mercury metalanguage1,623MIT hg-coreMercurial pure Rust core library, with no assumption on Python bindings (FFI)3,407GPL-2.0-or-later hg-cpythonMercurial Python bindings using the cpython crate1,821GPL-2.0-or-later hg-git-fast-importA utility to import single and multiple Mercurial repositories to Git.28,458Unlicense OR MIT Command line utilities hg-ignore(Not implemented yet) Filtering file paths based on Mercurial’s `.hgignore` files.1,684MIT hg-parserMercurial repository changelog parser. It allows to get any revision with creation date, user, parents, branch and files.23,456GPL-2.0-or-later hg-tuiA TUI application to view www.hellogithub.com12,181GPL-3.0-or-later hgameCG production management structs, e.g. of assets, personnels, progress, etc.8,095MIT OR Apache-2.0 Filesystem Multimedia hgdirectffiMercurial low level Python bindings, going through existing C extensions1,863GPL-2.0-or-later hggApproximate nearest neighbor search collection10,331MIT Computer vision Data structures hgignore(Not implemented yet) Filtering file paths based on Mercurial’s `.hgignore` files.1,640MIT hglpre-1.0 high level gl wrapper1,913Apache-2.0 OR MIT hglibMercurial command server client library.4,703MIT hglib-rsRust implementation of python-hglib5,184MPL-2.0 hgmReproduce the Haskell syntax sugar28MIT Development tools Rust patterns hgraphReserved for future use by HASH.18MIT OR Apache-2.0 hgraphsHypergraph algorithms and data structures for HGraphs.jl19MIT OR Apache-2.0 hgraphs-coreCore traits for hypergraph data structures30MIT OR Apache-2.0 hgrephgrep is a grep tool with human-friendly search output. This is similar to `-C` option of `grep` command, but its output is…34,983MIT Command line utilities Text processing hgresReserved for future use by HASH.17MIT OR Apache-2.0 hgvsPort of biocommons/hgvs to Rust60,422Apache-2.0 hgvs-weaverHigh-performance HGVS variant mapping and validation engine.89Apache-2.0 Science hhhighlight the exif photo info78MIT OR Apache-2.0 API bindings Web programming hh-cliA terminal-based coding agent runtime39MIT hh-coreHalfhand core: storage, blob store, event model, config55Apache-2.0 Data structures Database interfaces hh-highlighhh: The text highlighter1,287GPL-2.0-only hh-highlighthh: The text highlighter. Read from stdin, and highlight selected words printed to stdout3,326GPL-2.0-only hh-recordHalfhand recorder: PTY runner, FS watcher, MCP proxy48Apache-2.0 Development tools Filesystem hhhThe hhh Binary File Processor3,037Apache-2.0 Development tools Encoding hhh-first-rust随便写写998Apache-2.0 hhkodoSubpar BBCode parser.127BSD-2-Clause hhmmssFormat time and duration in chrono, std::time and time as HH:MM:SS and HH:MM:SS.xxx72,141MIT hhmmss_rsFormat time and duration in chrono, std::time and time as HH:MM:SS and HH:MM:SS.xxx6,250MIT Date and time Development tools hhshhhsh tui for rust1,646 GPL-3.0-or-later hihi with mail & wxpusher21,146MulanPSL-2.0 hi-apnsApple apns2,743MIT hi-authSocial account user info libary, include Github,Wechat and Google.5,014MIT hi-codetest tools1,560non-standard hi-docDiagnostics formatting library588,924MIT hi-doc-jumpropeSimple, fast rope (fancy string) library built on top of Skiplists - hi-doc fork437,890ISC OR Apache-2.0 hi-ffiProcedural macro that automatically generates FFI for C++, Python and Swift309MIT hi-hyper-multipartMultipart builder for hyper.3,439MIT hi-jira2Jira rest api v21,688MIT hi-nvim-rs(Neo)vim perceptual color scheme compiler7,552MIT OR Apache-2.0 hi-pushThird-party push service integration library. Include apns,fcm,xiaomi,huawei,wecom and email.1,574MIT hi-shellAn intelligent terminal assistant that translates natural language descriptions into executable shell commands.117MIT Command line utilities Development tools hi-tensionBasic but fast network communication between scientific applications1,813MIT Network programming Science hi_sparse_bitsetHierarchical sparse bitset. Incredibly high performance. Compact memory usage.42,399MIT OR Apache-2.0 Data structures hi_there_manrust publish package1,613MIT hi_think_financialCommunity-maintained Rust SDK for the HiThink financial data API.76MIT hiaeHigh-throughput Authenticated Encryption (HiAE) algorithm implementation1,301MIT OR Apache-2.0 Cryptography No standard library hiarcplaceholder1,463MIT hiasyncSupports only single-threaded asynchronous runtime3,348MIT OR Apache-2.0 hiatusDebug concurrent programs by choosing specific execution traces3,207Apache-2.0 Concurrency Development tools::Debugging hibachiAsynchronous Batched Inference Platform4,932MIT hibanaSession-typed choreographic programming for no_std Rust protocols, inspired by affine MPST900MIT OR Apache-2.0 Asynchronous Concurrency hibeQuick utility for hibernating your system2,848MIT Command line utilities hiberniaClean-room implementation of H.264 video decoder24MIT Multimedia::Video hibikiHibiki, a real-time speech-to-speech translation model2,170MIT/Apache-2.0 Science hibiscusA small (eventually statically typed) scripting language1,294BSD-3-Clause hibit_treeHierarchical bitmap tree. Integer-key map that can intersect FAST.3,913MIT OR Apache-2.0 Data structures hibitgraphHierarchical Bitset based graph data structure1,703MIT/Apache-2.0 Data structures hibitsetHierarchical bit set structure1,774,040MIT/Apache-2.0 Data structures hibossCLI for AI agents to communicate with their boss71MIT Command line utilities hibpCheck password for pwnage in HaveIBeenPwned3,042MIT hibp-bin-fetchDownloads Have I Been Pwned password hashes and converts them to compact 6-byte binary format for use with hibp-verifier116MIT Authentication Command line utilities hibp-sync-clientSyncs a local HIBP binary dataset from an hibp-bin-fetch serve instance73MIT hibp-verifierHigh-performance library for checking passwords against the Have I Been Pwned breach database using binary search on sha1t48…1,191MIT Authentication Cryptography hibp_downloaderA CLI app for downloading and/or sorting HaveIBeenPwned password hashes.3,907MIT hicThe Holestic IDE Companion (hic) allows you to run vscode tasks and debug launchers from the CLI1,640MIT hiccSafe, efficient, full-featured FFI between Rust and C++7,359MIT OR Apache-2.0 hicc-buildc++ code build tool used with hicc crate4,734MIT OR Apache-2.0 hicc-cbindgenGenerate C/C++ headers and Python ctypes bindings from Rust crates using hicc-rs C ABI exports117MIT OR Apache-2.0 hicc-rsSafe, efficient FFI between Rust and C/Python via C ABI with automatic binding generation130MIT OR Apache-2.0 hicc-rs-macrosProc macros for hicc-rs FFI bindings (export_class, export_lib)143MIT OR Apache-2.0 hicc-stdBased on hicc's ability to provide rust with the ability to call c++ standard container class interfaces3,376MIT OR Apache-2.0 hicc_autogenfor hicc-macro/hicc-build5,070MIT OR Apache-2.0 hicc_macrosSafe, efficient, full-featured FFI between Rust and C++5,608MIT OR Apache-2.0 hiccupRust HTML templating based on Clojure's Hiccup14,771GPL-3.0-or-later hicham-my_cratefirst crate941MIT hickBatteries-included, runtime-agnostic mDNS / DNS-SD: the `mdns-proto` Sans-I/O core wired to a default async driver (tokio & smol).67MIT OR Apache-2.0 Network programming hick-compiocompio-native async mDNS driver (responder + querier + DNS-SD discovery), thread-per-core.78MIT OR Apache-2.0 Asynchronous Network programming hick-embassyAsync mDNS / DNS-SD for embassy: the `hick-smoltcp` engine driven on embassy-net + embassy-time. `no_std` + `alloc`.104MIT OR Apache-2.0 Asynchronous Embedded development hick-reactorAsync mDNS driver layered on `mdns-proto` + `hick-udp`, runtime-agnostic via `agnostic-net` (tokio & smol).72MIT OR Apache-2.0 Network programming hick-smoltcpRuntime-agnostic mDNS / DNS-SD engine over smoltcp: the `mdns-proto` Sans-I/O core wired to smoltcp UDP. `no_std` + `alloc`.129MIT OR Apache-2.0 Embedded development Network programming hick-traceTracing-or-noop diagnostic macro shim and backend-agnostic stats/metrics primitives for the hick mDNS stack.173MIT OR Apache-2.0 hick-udpSync multicast UDP helpers + interface enumeration for mDNS. Cross-platform shim used by the async wrapper crates.95MIT OR Apache-2.0 Network programming hickoryHickory is a common name for trees composing the genus Carya, which includes around 18 species.1,532MIT/Apache-2.0 hickory-clientHickory DNS is a safe and secure DNS library. This is the Client library with DNSSEC support. DNSSEC with NSEC validation for…1,532,490MIT OR Apache-2.0 Network programming hickory-dnsHickory DNS is a safe and secure DNS server with a variety of protocol features (DNSSEC, TSIG, SIG(0), DoT, DoQ, DoH). It can be…24,850MIT OR Apache-2.0 Network programming hickory-dns-clientHickory is a common name for trees composing the genus Carya, which includes around 18 species.3,871MIT/Apache-2.0