All 305,250 crates, alphabetically

hopper-memoHopper-owned SPL Memo program builder. Thin, no_std CPI helper for the SPL Memo (and legacy v1 Memo) programs.117Apache-2.0No standard library hopper-metaplexHopper-owned Metaplex Token Metadata program builders, PDA helpers, and account read helpers. Powers the metadata::* /…118Apache-2.0Embedded developmentNo standard library hopper-multisigM-of-N signer threshold checks for Hopper. Duplicate-signer prevention, zero heap allocation.87Apache-2.0No standard library hopper-nativeHopper's sovereign raw backend for Solana. Zero-copy account access, direct syscall layer, CPI infrastructure, PDA helpers, and…776MIT OR Apache-2.0Embedded developmentNo standard library hopper-runtimeCanonical low-level runtime surface for Hopper. Hopper Native is the primary backend; legacy Pinocchio and solana-program…1,018Apache-2.0Embedded developmentNo standard library hopper-schemaSchema export and ABI fingerprinting for Hopper zero-copy state framework. Layout manifests, schema diff, migration checks.249Apache-2.0No standard library hopper-sdkOff-chain SDK for the Hopper zero-copy state framework. Parses receipts, decodes account state through segment-aware partial…57Apache-2.0API bindingsDevelopment tools hopper-solanaSolana integration layer for Hopper. SPL Token/Mint zero-copy readers, Token-2022 screening, CPI guards, token account helpers.324Apache-2.0No standard library hopper-stakingStaking reward accumulators for Hopper: MasterChef-style reward-per-token, emission rates, reward debt tracking. Zero-copy,…88Apache-2.0No standard library hopper-systemHopper-owned System Program builder surface. Thin, no_std instruction builders over Hopper Runtime.389Apache-2.0No standard library hopper-systemsAdvanced state architecture for Hopper. Layouts, headers, fingerprints, segments, overlays, receipts, migrations, policies, and…304Apache-2.0Embedded developmentNo standard library hopper-tokenHopper-owned SPL Token builder surface. Thin, no_std instruction builders over Hopper Runtime.354Apache-2.0No standard library hopper-token-2022Hopper-owned Token-2022 builder and screening surface. Thin, no_std instruction builders over Hopper Runtime.265Apache-2.0No standard library hopper-vestingToken vesting schedule calculations for Hopper. Linear with cliff, stepped/periodic unlocks, safe claimable amounts.90Apache-2.0No standard library hoppy-cliCLI for bunny.net cloud and edge services42MITCommand line utilities hopr-apiCommon high-level external and internal API traits used by hopr-lib to implement the HOPR protocol6,473GPL-3.0-only hopr-bindingsThis package only exists to automate the export and generation of Rust bindings into the HOPR project10,753GPL-3.0-only hopr-typesComplete collection of Rust types used in Hoprnet and other related projects10,915GPL-3.0-only hopscotchA FIFO queue for efficiently hopping and skipping between tagged items8,423MIT hopsfs-native-object-storeobject_store implementation for HopsFS client87Apache-2.0 hopterA Rust-based embedded operating system designed to enable memory safe, memory efficient, reliable, and responsive applications.7,785MITEmbedded developmentNo standard library hopter_conf_paramsHopter embedded operating system configuration parameters.2,201MIT hopter_proc_macroProcedural macro implementation for Hopter embedded operating system.5,751MIT horaHora Search Everywhere48,626Apache-2.0AlgorithmsData structures hora-graph-coreBio-inspired embedded knowledge graph engine — pure Rust, zero runtime deps23MIT OR Apache-2.0Data structuresDatabase interfaces hora-idA 64-bit time-based sorted unique ID generator that includes the current time in the ID2,483MIT OR Apache-2.0Data structures hora-newHora Search Everywhere4,798Apache-2.0AlgorithmsData structures horaedb-clientApache HoraeDB (Incubating) Rust Client.18,137Apache-2.0 horaedbprotoProtobuf specs for Apache HoraeDB™20,151Apache-2.0 horcrustHorcrust is a command-line-tool which splits a file into encrypted shards for safekeeping. As long as the specified threshold is…3,757MIT horcruxKeep the name for future use as a file system.1,681Apache-2.0 OR MIT hordea horde of threads3,115MIT OR Apache-2.0ConcurrencyData structures horde-rsA Fast, Secure and Reliable Terraform Backend, Set up in Minutes.1,487MIT horde3d-sysFFI bindings for Horde3D v1.0 Horde3D is automatically built and linked statically.4,102EPL-1.0External FFI bindingsRendering::Rendering engine horfimbor-callback-recalla small lib allowing to store callback that will be triggered at a specified date81non-standardAsynchronousDatabase interfaces horfimbor-clienta web client helper for the horfimbor-engine with Yew165non-standardWebAssemblyWeb programming horfimbor-client-derivederive macro for yew and custom-elements1,909non-standardDevelopment tools::Procedural macro helpers horfimbor-eventsourcean eventsource implementation on top of kurrentdb12,768non-standardAsynchronousDatabase interfaces horfimbor-eventsource-derivederive macro for horfimbor-eventsource11,060non-standardDevelopment tools::Procedural macro helpers horfimbor-jwtJwt handler for the game engine Horfimbor2,219non-standardAuthentication horfimbor-timeTime calculator for the Horfimbor game3,702non-standardDate and timeGame development horizoAppointment scheduling workflow — WhatsApp coordination and calendar booking21MIT horizonhighly WIP! desktop application toolkit21non-standard horizon-client-sdkRust client SDK for Horizon container orchestration platform363MIT OR Apache-2.0 horizon-eventsevent handling for Horizon18non-standard horizon-latticeA Rust-native GUI framework inspired by Qt647MIT OR Apache-2.0GraphicsGUI horizon-lattice-coreCore systems for Horizon Lattice: event loop, signals, properties438MIT OR Apache-2.0GUI horizon-lattice-macrosProcedural macros for Horizon Lattice meta-object system135MIT OR Apache-2.0Development tools::Procedural macro helpers horizon-lattice-multimediaMultimedia module for Horizon Lattice: audio playback, sound effects119MIT OR Apache-2.0Multimedia::Audio horizon-lattice-netNetworking module for Horizon Lattice: HTTP client, WebSocket, TCP/UDP sockets195MIT OR Apache-2.0Network programmingWeb programming::HTTP client horizon-lattice-renderGraphics rendering backend for Horizon Lattice using wgpu211MIT OR Apache-2.0GraphicsRendering::Rendering engine horizon-lattice-styleCSS-like styling system for Horizon Lattice135MIT OR Apache-2.0GUI Horizon-Network-CommonShared network types and protocols for Horizon ecosystem (Horizon, Atlas, Maestro)533MITGame developmentNetwork programming horizon-plugin-apiAPI utils and shared types for Horizon plugins12,979MIT horizon-sdkCanonical Rust data access layer for the Horizon platform403LicenseRef-Proprietary horizon-statuslinehorizon — a living landscape for the Claude Code statusline37MIT OR Apache-2.0Command line utilities horizon_data_typesThe Horizon data types library for third-party integrations6,398Apache-2.0 horizon_event_systemHorizon Event System for handling events in the Horizon game server ecosystem.9,406MIT horizon_loggerColor-coded logging system for Horizon game server1,388MIT horizonsRust API for JPL Horizons Ephemeris System1,512MIT horizons-aiAsync Rust SDK for the Horizons REST API21non-standardAPI bindingsAsynchronous horizontal_mixerhorizontal mixer in Rust using Kira for audio playback4,912MITGame developmentMultimedia::Audio horkosCloud infrastructure language where insecure code won't compile242MIT OR Apache-2.0CompilersDevelopment tools horlogeClock and timer traits744,511MIT hornbeamHornbeam template engine (high-level crate for use in applications)5,806AGPL-3.0-or-later hornbeam_grammarGrammar for the Hornbeam template language7,140AGPL-3.0-or-later hornbeam_interpreterInterpreter for the Hornbeam template language. This is the low-level implementation crate; not advised for direct use in…6,314AGPL-3.0-or-later hornbeam_irIntermediate representation for the Hornbeam template language6,686AGPL-3.0-or-later hornbeam_macrosMacros for the Hornbeam template system1,765AGPL-3.0-or-later hornbill_apilibrust api library for connecting to a hornbill instance4,102non-standard horned-binCommand Line tools for OWL Ontologies4,607LGPL-3.0Command line utilitiesData structures horned-functionalAn OWL2 Functional-style Syntax parser for horned-owl20,939MITParser implementationsScience horned-owlLibrary for OWL Ontologies59,279LGPL-3.0Command line utilitiesData structures horned-pretty-rdfRDF/XML Pretty Formatting87LGPL-3.0 horned-visitVisitor traits for horned-owl with overloadable implementations1,642MITScience hornerEvaluate polynomials using Horner's method.9,322ISCMathematicsScience horner-evalA macro for evaluating polynomials via Horner's rule1,682MIT OR Apache-2.0AlgorithmsMathematics hornetA Rust implementation of the PCP instrumentation API2,121MIT OR Apache-2.0 hornet-bind9Parse, write, and validate BIND9 named.conf configuration files and DNS zone files25MITCommand line utilitiesParser implementations hornetmqA fast, Redis-backed job queue for Rust — fully compatible with BullMQ65MITAsynchronous hornetmq-macrosProcedural macros for hornetmq127MITAsynchronous horntailmaplestory resource file unpack lib1,395MIT hornvaleHornvale is an experimental, idiosyncratic text adventure game written in Rust.2,171Unlicense horokai-networkstruct Network, graph in mathmatics.3,079 horologeEarth has 4 corner simultaneous 4-day time cube within single rotation258MITDate and time horosA minimalist C project scaffolding tool19MITDevelopment tools horoscopeThe all knowing scheduler1,840MIT horrible-katex-hackA way of using KaTeX with rustdoc by abusing the doc(html_favicon_url) attribute.5,939BSD-2-Clause horrorCryptography helper library4,647GPL-3.0-or-later horrorhttpA perhaps too flexible HTTP library based on a state machine.1,889MIT horrorsYour worst nightmare1,174MIT horrorshowa templating library written in rust macros402,706MIT/Apache-2.0Template engine horsinstant coding answers via the command line(just like howdoi)40,783GPL-3.0Command line utilities horseDisplay a lovely horse to increase interest of beginners.4,427MIT HorseShoeA Rust Language Infinitesimal Calculus crate6,633MITAlgorithmsScience horsetabTrigger Linux/Unix commands via morse code using your mouse.31,773MIT OR Apache-2.0 horsieSandboxed orchestration for LLM agent graphs34MIT OR Apache-2.0 horsie-actorActor primitives with durable journaling for horsie158MIT OR Apache-2.0 horsie-agentcoreCore agent abstractions for horsie188MIT OR Apache-2.0 horsie-anthropicAnthropic LLM provider for horsie72MIT OR Apache-2.0 horsie-executorJob executor for horsie78MIT OR Apache-2.0 horsie-executor-clientClient for the horsie executor101MIT OR Apache-2.0 horsie-mcp-clientMCP (Model Context Protocol) client for horsie43MIT OR Apache-2.0 horsie-modelsProtocol message types for horsie250MIT OR Apache-2.0 horsie-openaiOpenAI-compatible chat-completions provider for horsie11MIT OR Apache-2.0 horsie-runtimeSandboxed per-job runtime child for horsie43MIT OR Apache-2.0 horsie-runtime-clientClient for the horsie runtime151MIT OR Apache-2.0 horsie-supervisorJob supervision and orchestration core for horsie57MIT OR Apache-2.0 horsie-workflowAgent workflow graphs for horsie78MIT OR Apache-2.0 horsiesUnified public API for the horsies task queue and workflow engine424MITAsynchronousDatabase interfaces horsies-macrosProc macros for the horsies task queue and workflow engine554MIT hortTerminal-operated, agent-agnostic manager of ephemeral sandboxes (a git worktree + an embedded-libcontainer OCI container) for…17AGPL-3.0-onlyCommand line utilitiesDevelopment tools horticulteurA RFC4180-compliant CSV parsing library2,994MIT hortusComing soon1,661MIT horus-learingThis is a project made with the objective to learn the rust programming language1,203MIT horus-resourcesDynamic resource detection (RAM/CPU/cgroups) for adaptive behavior and OOM prevention across Horus projects24MITHardware supportOperating systems horustA complete supervisor and init system, designed for running in containers.10,555MITCommand line utilities horust-commands-libA complete supervisor and init system, designed for running in containers.2,805MITCommand line utilities horustctlCLI tool for interacting with a running Horust instance.42MITCommand line utilities hosHOS: an Operating System that makes people Happy 😊1,603MIT OR Apache-2.0 hos_kernelThe kernel for HOS: the Happy Operating System 😊1,688MIT OR Apache-2.0 hoseColumn-based protocol for transferring ECS data between different systems.1,284MIT OR Apache-2.0 hospInterface for managing an ODROID Smart Power device over USB.2,012BSD-3-ClauseHardware support hosthost91MulanPSL-2.0 host-apiTransport-agnostic host API engine for Polkadot app runtimes (SCALE binary protocol)145AGPL-3.0 host-browser-bridgeBrowser extension bridge contract for host-sdk desktop hosts141AGPL-3.0 host-canHost library for CAN adapters5,600MIT OR Apache-2.0AutomotiveHardware support host-chainPolkadot chain integration: DOTNS resolution, light client, IPFS fetching, CAR parsing139AGPL-3.0 host-chain-coreWASM-compatible DotNS resolution, IPFS fetching, and CAR parsing (async, reqwest + ruzstd)385AGPL-3.0 host-chatChat protocol primitives — crypto, encoding, protocol logic. No I/O, WASM-safe.267AGPL-3.0 host-chat-mlsMLS group keying for host-chat — forward secrecy and post-compromise security148AGPL-3.0 host-chat-v1DM chat session management for Polkadot Host products — iOS v2 interop146AGPL-3.0 host-client-ipcShared local IPC session and permission types for host-sdk desktop and embedded hosts317AGPL-3.0 host-desktop-daemonDesktop system host daemon scaffold for host-sdk140AGPL-3.0 host-embeddedEmbedded Linux host scaffold for host-sdk142AGPL-3.0 host-encodingPure codec and hash functions for DOTNS and statement-store — no I/O, WASM-safe559AGPL-3.0 host-ext-apiCore HostExtension trait shared by host-extensions and individual ext crates252AGPL-3.0 host-ext-filesFilesExtension — host-mediated save/download actions for SPA tabs (window.host.ext.files)191AGPL-3.0 host-extensionsExtension framework for host-sdk: parallel JS bridges registered under window.host.ext.*145AGPL-3.0 host-identityStable, collision-resistant host identity resolution across platforms, container runtimes, cloud providers, and Kubernetes268Apache-2.0 OR MITOperating systemsOperating systems::Unix APIs host-identity-cliCommand-line interface for host-identity: print a stable host UUID across platforms, clouds, and Kubernetes62Apache-2.0 OR MITCommand line utilities host-port-pairOwned host and port pair type for DNS names and IP addresses9,475MITData structuresEncoding host-product-viewProductView delegate trait and supporting types for Polkadot product host embedding148AGPL-3.0 host-rsA CLI tool that manage website blocking, unblocking, redirection.8,958non-standardCommand line utilities host-ssoSSO session manager — QR pairing lifecycle, sign request forwarding, session persistence146AGPL-3.0 host-substrateTyped Substrate chain operations via subxt + smoldot light client139AGPL-3.0 host-utilslibrary to manage website blocking, unblocking, redirection5,286MIT host-vrfVRF provider trait for Bandersnatch ring-VRF — no crypto implementation, zero heavy deps147AGPL-3.0 host-walletMulti-chain wallet: sr25519/secp256k1 key management, per-app derivation, platform keychain329AGPL-3.0 host_discoveryA simple Rust crate for host discovery84,928MIT host_iphost_ip787MulanPSL-2.0 hostabYour dev tool to manage /etc/hosts like a pro — written in Rust52MIT hostaddrType-safe, validated DNS domain names, hosts, and host addresses with IDNA/punycode support. Generic over storage (`String`,…57,828MIT OR Apache-2.0Network programmingNo standard library hostaibotHost AI Bot - AI Agent Hosting Platform23LicenseRef-ProprietaryWeb programming hostaibotsHost AI Bots - AI Agent Hosting Platform23LicenseRef-ProprietaryWeb programming hostbatGeneric deterministic module host: mount content-identified modules over a syncbat Core.118MIT OR Apache-2.0Database implementations hostcatUNIX Command Line tool to switch between Local Dns profiles10,716GPL-3.0-or-laterCommand line utilities hostcraft-cliCLI for managing your system hosts file157MITCommand line utilitiesNetwork programming hostcraft-coreCore library for the hostcraft ecosystem — parsing, manipulation and file I/O for system hosts362MITCommand line utilitiesNetwork programming hosted-git-infoProvides metadata and conversions from repository urls for GitHub, Bitbucket and GitLab4,116ISC hosterSmall parser and lexer library for Hosts file format2,742non-standard hostessA tool to maintain hosts12,228MIT hostfileA rust crate for parsing /etc/hosts319,574MITOperating systemsParsing tools hostfxr-sysFFI bindings for hostfxr.66,692MITExternal FFI bindings hostiehostie is a command-line utility for managing your /etc/hosts file.560MITCommand line utilitiesDevelopment tools hostileWant this package name? Contact me!6,933MITCommand line utilities hostlessHostless1,644Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MITCommand-line interfaceFilesystem hostlistHostlist library for Rust and CLI app9,955MIT hostlist-parserParses hostlist expressions into a Vec of Strings847,574MIT hostlist_iterA hostlist handling library659MIT OR Apache-2.0Command-line interfaceCommand line utilities hostmanA cli manager for /etc/hosts23,412MIT hostnameCross-platform system's host name functions182,228,097MITAPI bindingsOperating systems hostname-validatorValidate hostnames according to IETF RFC 11237,283,203MITNo standard library hostname1-zbusdbus bindings for org.freedesktop.hostname1 with zbus8,304MPL-2.0Operating systems::Linux APIs hostname_resolverValidate hostname1,379MITConfiguration hostparserA very fast hostparser.4,977MIT hostportParse and validate host:port combinations.3,179MIT hostrhostr1,482MIT hostshosts editing tool1,751MIT hosts-diggerAn /etc/hosts parser1,518MIT hosts-parserA simple parser for /etc/hosts4,421MIT hosts_tozero-copy /etc/hosts parser6,167BSL-1.0 hostsfileA simplistic programmatic /etc/hosts file editor1,471MITCommand-line interfaceNetwork programming hostsmodCLI tool to safely modify /etc/hosts and parser library for the file.1,660BSD-3-ClauseCommand line utilitiesConfiguration hoststatusUtility to check server status by hostname2,824MIT hosttuiA TUI to manage SSH configuration: browse hosts, organize them in groups, and connect90MITCommand line utilities hotA mid-level Vulkan abstraction library for the expert and the masses.1,937MIT OR Apache-2.0 OR Zlib hot-cliUnix command reloader1,528MIT hot-devOfficial Rust SDK for the Hot Dev API15Apache-2.0API bindingsWeb programming::HTTP client hot-glyphHot-reload dylib loader for the Glyph UI framework102MITGraphicsGUI hot-lib-reloaderUtility to reload libraries on change. For faster feedback cycles.57,982MITDevelopment tools hot-lib-reloader-macroMacro crate for hot-lib-reloader56,691MIT hot-loopRunning Gguf Chat-Models on Pure-Rust, Uses the Candle Backend419MIT hot-ranking-algorithmAlgorithm that measures how relevant a given data set is, kinda like Reddit3,593MIT hot-ranking-algorithm-rustAlgorithm that measures how relevant a given data set is, kinda like Reddit2,069MIT hot-reload-serverHot reloading HTTP server for HTML, CSS, JavaScript and WebAssembly web development.1,673ISCDevelopment toolsFilesystem hot-restartA Rust library for hot restarting applications without downtime. Provides seamless process replacement for servers and…13,914MITNetwork programmingWeb programming hot_potatohot reloading library for development3,815MITDevelopment toolsGame development hot_potato_proc_macrohelper crate for hot_potato4,347MIT hot_reloadTrait and service definition of periodic hot reloader and notifier for config-file, KVS, etc.29,603MITFilesystemRust patterns