All 305,250 crates, alphabetically

opcode-registry⚡ opcode - Zero-copy binary serialization with compile-time guarantees 🎩458MIT opcuaOPC UA client and server API71,434MPL-2.0Embedded developmentNetwork programming opcua-certificate-creatorOPC UA certificate creator13,145MPL-2.0Embedded developmentNetwork programming opcua-clientOPC UA client API47,405MPL-2.0Embedded developmentNetwork programming opcua-console-loggingLogging to the console for OPC UA used by client and server12,237MPL-2.0Embedded developmentNetwork programming opcua-coreCore components for OPC UA used by client and server50,092MPL-2.0Embedded developmentNetwork programming opcua-cryptoEncryption / decryption used by OPC UA client and server32,311MPL-2.0Embedded developmentNetwork programming opcua-mcpMCP server exposing OPC-UA as a FieldWorks nine-tool industrial protocol adapter11Apache-2.0Hardware supportNetwork programming opcua-serverOPC UA server API34,623MPL-2.0Embedded developmentNetwork programming opcua-typesOPC UA types and constants53,832MPL-2.0Embedded developmentNetwork programming opd-parserParser for the OPD point cloud animation format168,078MIT OR Apache-2.0 opdaterSmall trait based approch to struct updates1,388ISC opdater_deriveDerive macro to implement Opdater for structs1,012ISC opdayDex(Ops)Experience for deployments and other ops operations made easy1,539MIT opdotA CLI for syncing environment variables using 1password1,114ISC opdsLibrary for building and parsing OPDS responses42MIT OR Apache-2.0 opeThis is an Order-preserving encryption (OPE) lib inspired by cryptdb's ope implementation.6,781non-standard ope-cryptoOPE cryptographic primitives (Ed25519, hashing, base64url)101Apache-2.0 ope-e2eOPE Confidential AI: hybrid PQ application-layer E2E encryption95Apache-2.0 ope-envelopeOPE envelope signing, verification, and canonicalization98Apache-2.0 ope-rust-web-serverA library for creating a static web server2,611MIT ope-simplifiedOPE (order preserving encryption) algorithms for liserk zero knowledge database1,531MIT ope-transportOPE transport profile: X25519MLKEM768 hybrid KEX (TLS-aligned)98Apache-2.0 opejsonSurgical JSON manipulation macros for Rust. (Strict, Genesis, and Law modes)113MIT OR Apache-2.0Data structuresEncoding opemsshPass a key from the PEM format to the OpenSSH format3,530non-standard openOpen a path or URL using the program configured on the system42,999,833MIT open-agent-idRust SDK for Open Agent ID — sign, verify, and manage AI agent identities106Apache-2.0AuthenticationCryptography open-agent-sdkProduction-ready Rust SDK for building AI agents with local OpenAI-compatible servers (LMStudio, Ollama, llama.cpp, vLLM).…710MITAPI bindingsAsynchronous open-ai-rust-responses-by-sshiftA feature-rich, async-first Rust wrapper for the OpenAI Responses API, with built-in support for streaming, function calling,…15,764MITAPI bindingsAsynchronous open-ambientOpen files and directories with constant paths9,394Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MITRust patterns open-api-generatorAn OpenAPI/Swagger schema generator1,503Apache-2.0 open-api-hydraHydra Client generated by Open API1,664MIT OR Apache-2.0 open-archery-formatAn open source binary file format for archery scoring2,660non-standard open-asset-importerRust bindings for the Assimp (Open Asset Importer) library, for loading 3D assets9,275MIT open-authOfficial re-export alias for the openauth crate.18MITAuthenticationWeb programming open-banking-ioServer-to-server client for open-banking.io with local zero-knowledge envelope decryption.57MITAPI bindingsCryptography open-bcifA high-performance streaming toolkit for BinaryCIF (BCIF) files.58MITData structuresScience open-block-ei-open-roles-near-coreDecentralized role management for smart contracts on the NEAR Blockchain1,620Apache-2.0Command line utilities open-browserAgentic browser access23MITAPI bindingsDevelopment tools open-build-service-apiClient for the Open Build Service API323MIT OR Apache-2.0 open-build-service-mockMock crate for the Open Build Service API288MIT OR Apache-2.0 open-chroma-indexOpen Chroma Index's color identity kernel.72Apache-2.0Graphics open-cl-coreOpenCL thread-safe, memory-safe Rust bindings4,204MIT open-cl-low-levelOpenCL low-level bindings6,032MIT open-cl-runtimeOpenCL async scheduler runtime1,736MIT open-cl-sysOpenCL C-FFI bindings3,969MIT open-coroutineThe open-coroutine is a simple, efficient and generic stackfull-coroutine library.35,136Apache-2.0AsynchronousConcurrency open-coroutine-coreThe open-coroutine is a simple, efficient and generic coroutine library.10,155Apache-2.0AsynchronousConcurrency open-coroutine-hookThe syscall hook for open-coroutine5,411Apache-2.0AsynchronousConcurrency open-coroutine-hooksThe syscall hook for open-coroutine2,810LGPL-3.0 OR Apache-2.0AsynchronousConcurrency open-coroutine-iouringThe io_uring support for open-coroutine1,966LGPL-3.0 OR Apache-2.0AsynchronousConcurrency open-coroutine-macrosThe proc macros for open-coroutine10,592Apache-2.0AsynchronousConcurrency open-coroutine-queueConcurrent work-stealing queue, implemented using st3 and crossbeam-deque.4,847LGPL-3.0 OR Apache-2.0ConcurrencyData structures open-coroutine-timerThe time utils.6,062LGPL-3.0 OR Apache-2.0Data structures open-coworkOpenCoWork - Open-source AI collaborative assistant with sandboxed execution26MITCommand line utilitiesDevelopment tools open-cypherA rust library for parsing openCyper queries.3,286MITParser implementations open-detectStatic malware detection engine with YARA rule support and automatic archive extraction for security researchers258MIT OR Apache-2.0 open-dis-rustA Rust implementation of the IEEE 1278.1-2012 DIS Standard.16,486BSD-2-Clause open-documentLibrary to read and write documents compatible with the opendocument format.1,596MIT OR Apache-2.0 open-edition-factoryStargaze open edition minter factory contract24,141Apache-2.0 open-edition-minterStargaze open edition minter contract21,153Apache-2.0 open-editorOpen files or Strings in user's default editor2,705MIT open-eeg-codec-standardOpenECS — a universal, vendor-neutral Open EEG Codec Standard: grade any EEG codec (any language, via a file-based contract)…34Apache-2.0Command line utilitiesCompression open-english-pronouncing-dictionaryOpenEPD: open, fused English IPA pronunciation dictionary (~280k US English words). Misaki + CMUdict + WikiPron, canonical IPA…43CC-BY-SA-4.0Internationalization (i18n)Science open-entry-bindingsOpenEntry Bindings for extensions3,769MIT open-enumAn attribute for generating "open" fieldless enums, those that accept any integer value, by using a newtype struct and associated…1,228,861Apache-2.0No standard libraryRust patterns open-enum-deriveAn attribute for generating "open" C-like enums, those that accept any integer value, by using a newtype struct and associated…1,229,311Apache-2.0No standard libraryRust patterns open-eyeMetrics collection library for the Observe server monitoring application41non-standard open-fastrlpFast RLP serialization library. This crate is a yanked version of FastRLP 0.1.2 which was Apache licensed8,384,334Apache-2.0 open-fastrlp-deriveProcedural macros for fastrlp8,333,830Apache-2.0 open-featureThe official OpenFeature Rust SDK.1,540,035Apache-2.0 open-feature-env-varEnvironment Variable provider for OpenFeature285,522Apache-2.0 open-feature-flagdThe official flagd provider for OpenFeature.44,818Apache-2.0 open-feature-ofrepThe official OpenFeature Remote Evaluation Protocol (OFREP) provider for OpenFeature.1,323Apache-2.0 open-fileOpening file in editor1,910GPL-3.0FilesystemText editors open-formulaA spreadsheet formula parser and evaluator that conforms to the Open Document Format for Office Applications Version 1.4 Format.25MIT OR Apache-2.0 open-goproA crate to control GoPro cameras via BLE, WiFi or USB.1,523MIT open-gpuiOpen GPUI's GPU-accelerated UI framework forked from Zed GPUI.266Apache-2.0GUI open-gpui-canvasExtensible infinite canvas model and interaction primitives for Open GPUI.20Apache-2.0Data structuresGUI open-gpui-collectionsStandard collection types used by Open GPUI.324Apache-2.0 open-gpui-commandCommand registry, projection, and GPUI action adapters for Open GPUI applications.24Apache-2.0 open-gpui-core-utilUtility helpers used by Open GPUI crates.334Apache-2.0 open-gpui-dockingRetained docking graph and layout primitives for Open GPUI.21Apache-2.0GUI open-gpui-font-kitOpen GPUI-maintained fork of the font-kit cross-platform font loading library.204MIT OR Apache-2.0 open-gpui-http-clientHTTP client abstractions used by Open GPUI.288Apache-2.0 open-gpui-http-client-tlsTLS helpers for Open GPUI HTTP clients.64Apache-2.0 open-gpui-linuxLinux platform backend for Open GPUI.94Apache-2.0 open-gpui-macosmacOS platform backend for Open GPUI.80Apache-2.0 open-gpui-macrosMacros used by Open GPUI.268Apache-2.0 open-gpui-mediamacOS media API bindings used by Open GPUI.219Apache-2.0 open-gpui-motionRenderer-neutral motion primitives for Open GPUI.25Apache-2.0 open-gpui-platformCross-platform backend selector for Open GPUI.84Apache-2.0 open-gpui-refineableRefinement types used by Open GPUI.268Apache-2.0 open-gpui-refineable-deriveDerive macro for Open GPUI refinement types.285Apache-2.0 open-gpui-reqwest-clientReqwest-backed HTTP client for Open GPUI.48Apache-2.0 open-gpui-scapOpen GPUI-maintained fork of the scap screen capture library.505MITGraphicsMultimedia open-gpui-schedulerTask scheduler used by Open GPUI.267Apache-2.0 open-gpui-shared-stringShared string type used by Open GPUI.271Apache-2.0 open-gpui-sum-treeConcurrency-friendly sum tree data structure used by Open GPUI.265Apache-2.0 open-gpui-ui-componentsConcrete UI components for the Open GPUI component ecosystem.17Apache-2.0 open-gpui-ui-coreFoundation primitives for the Open GPUI component ecosystem.23Apache-2.0 open-gpui-utilGeneral-purpose utility helpers used by Open GPUI.308Apache-2.0 open-gpui-util-macrosUtility macros used by Open GPUI.281Apache-2.0 open-gpui-webWebAssembly platform backend for Open GPUI.73Apache-2.0 open-gpui-wgpuwgpu renderer backend for Open GPUI.119Apache-2.0 open-gpui-windowsWindows platform backend for Open GPUI.83Apache-2.0 open-graphGenerate HTML for Open Graph integration.1,863MIT OR Apache-2.0Template engineValue formatting open-hereQuickly open any app in the folder you're currently in41MITCommand line utilities open-homePlaceholder for the Open-Home - currently in Development1,444AGPL-3.0-or-later open-home-ambientPlaceholder for the Open-Home Ambient - currently in Development1,429AGPL-3.0-or-later open-home-apiPlaceholder for the Open-Home API - currently in Development1,440AGPL-3.0-or-later open-hypergraphsData-Parallel Algorithms for Open Hypergraphs12,070MIT OR Apache-2.0 open-hypergraphs-dotA library for visualizing lax open hypergraphs in GraphViz DOT format6,523MIT open-keebWIP modular keyboard firmware1,597GPL-3.0-only open-kioku-actionsAction execution primitives for Open Kioku.368Elastic-2.0Development tools open-kioku-architectureArchitecture detection and boundary checks for Open Kioku.360Elastic-2.0Development tools open-kioku-cliOpen Kioku command-line interface and MCP server binary.164Elastic-2.0Command line utilitiesDevelopment tools open-kioku-configConfiguration loading and validation for Open Kioku repositories.610Elastic-2.0Development tools open-kioku-contextContext pack assembly for AI coding agents.365Elastic-2.0Development tools open-kioku-context-compressReversible context handle compression for Open Kioku.277Elastic-2.0Development tools open-kioku-contractVersioned change-contract schema and validation primitives for Open Kioku.260Elastic-2.0Development tools open-kioku-coreShared data models and schema types for Open Kioku code intelligence.1,209Elastic-2.0Development tools open-kioku-daemonDaemon primitives for Open Kioku background services.159Elastic-2.0Development tools open-kioku-embeddingsEmbedding provider interfaces for Open Kioku.326Elastic-2.0Development tools open-kioku-errorsShared error types for Open Kioku crates.1,465Elastic-2.0Development tools open-kioku-evidenceEvidence records and scoring support for Open Kioku analysis.562Elastic-2.0Development tools open-kioku-formatPrompt-oriented renderers for Open Kioku reports.402Elastic-2.0Development tools open-kioku-gitGit repository helpers for Open Kioku indexing and analysis.393Elastic-2.0Development tools open-kioku-graphDependency and symbol graph construction for Open Kioku.365Elastic-2.0Development tools open-kioku-impactImpact analysis for code changes in Open Kioku.399Elastic-2.0Development tools open-kioku-ingestRepository indexing pipeline for Open Kioku.288Elastic-2.0Development tools open-kioku-languagesLanguage detection and metadata for Open Kioku.343Elastic-2.0Development tools open-kioku-lspLanguage Server Protocol helpers for Open Kioku.169Elastic-2.0Development tools open-kioku-mcpModel Context Protocol server implementation for Open Kioku.240Elastic-2.0Development tools open-kioku-memoryAppend-only repo memory and entity-linked recall for Open Kioku.318Elastic-2.0Development tools open-kioku-parseSource parsing and symbol extraction for Open Kioku.345Elastic-2.0Development tools open-kioku-patchPatch planning and review support for Open Kioku.281Elastic-2.0Development tools open-kioku-planPlanning primitives for Open Kioku coding workflows.311Elastic-2.0Development tools open-kioku-qdrantQdrant vector store integration for Open Kioku.181Elastic-2.0Development tools open-kioku-rankingRanking and scoring utilities for Open Kioku results.398Elastic-2.0Development tools open-kioku-sandboxSandbox policy checks for Open Kioku actions.184Elastic-2.0Development tools open-kioku-scipSCIP occurrence import and mapping for Open Kioku.333Elastic-2.0Development tools open-kioku-searchShared search traits and result types for Open Kioku.179Elastic-2.0Development tools open-kioku-search-regexRegex search implementation for Open Kioku.438Elastic-2.0Development tools open-kioku-search-tantivyTantivy-backed full-text search for Open Kioku.330Elastic-2.0Development tools open-kioku-semanticSemantic search orchestration for Open Kioku.282Elastic-2.0Development tools open-kioku-sentrySentry integration helpers for Open Kioku.284Elastic-2.0Development tools open-kioku-storageStorage traits and index abstractions for Open Kioku.822Elastic-2.0Development tools open-kioku-storage-kvKey-value storage helpers for Open Kioku.170Elastic-2.0Development tools open-kioku-storage-sqliteSQLite persistence for Open Kioku indexes.392Elastic-2.0Development tools open-kioku-symbolsSymbol lookup and navigation for Open Kioku.273Elastic-2.0Development tools open-kioku-testsFixture and test selection support for Open Kioku.393Elastic-2.0Development tools open-kioku-tree-sitterTree-sitter parser adapters for Open Kioku.383Elastic-2.0Development tools open-kioku-vectorLocal vector index contracts and exact-flat backend for Open Kioku.282Elastic-2.0Development tools open-kioku-watchFile watching and incremental indexing support for Open Kioku.231Elastic-2.0Development tools open-larkEnterprise-grade Lark/Feishu Open API SDK with comprehensive Chinese documentation and advanced error handling30,928Apache-2.0API bindings open-libraryA client to interact with the Open Library API8,860MIT open-library-api-rsAsync Rust client for the Open Library API32MITAPI bindingsAsynchronous open-location-codeLibrary for translating between GPS coordinates (WGS84) and Open Location Code13,866Apache-2.0 open-loopsRecupere o contexto de trabalhos pausados: o que começou, onde parou, qual o próximo passo221MIT OR Apache-2.0Command line utilitiesDevelopment tools open-lyrics-cliA cli to read lyrics and verses from OpenLP's save files1,664MIT open-mercato-clientTyped API client for the Open Mercato platform with code generation tools. Generate types from your instance's OpenAPI…25MITAPI bindingsWeb programming open-meteo-apia simple open-meteo api wrapper to get weather data7,523MIT open-meteo-cliCLI to extract meteorology data from Open Meteo8,685MITCommand line utilities open-meteo-rsHTTP client for open-meteo.com api9,338non-standard open-metrics-clientOpen Metrics client library allowing users to natively instrument applications.585,197Apache-2.0 OR MIT open-metrics-client-derive-text-encodeAuxiliary crate to derive text Encode trait from open-metrics-client.551,359Apache-2.0 OR MIT open-mind-capability-discoveryCapability discovery engine for open-mind — reads CAPABILITY.toml files and builds integration graphs18MIT open-modulesPayments tokens management contract module. This module is used to add/remove tokens that are accepted as payment for the…1,231GPL-3.0-onlyCryptography::CryptocurrenciesNo standard library open-mpmMPM orchestration platform: AI agent harness with multi-model routing, tool execution, and subprocess delegation.17Elastic-2.0 open-mpm-agent-apiStable agent-plugin surface (ToolExecutor, AgentPlugin, ToolResult) shared by open-mpm and external agent crates.19Elastic-2.0 open-multi-agent-rsA multi-agent orchestration framework for Rust — streaming LLM calls, tool use, task pipelines, retry, and observability.105Apache-2.0API bindingsArtificial intelligence open-nexusFast flow-indexed network analysis toolkit43MIT OR Apache-2.0Command line utilitiesNetwork programming open-notify-apiCrate to access data provided by http://open-notify.org/1,860GPL-3.0 open-oak2D game engine and rendering library5,630AGPL-3.0-onlyGame enginesGraphics open-oak-game-of-lifeImplementation of Conway's Game of Life using open-oak as the front-end and conlife as the backend3,860AGPL-3.0-onlyData structuresGames open-opusOpen Opus API client1,599Apache-2.0 open-paymentsOpen Payments Rust SDK library with types, HTTP client and signature utilities880Apache-2.0API bindingsAsynchronous open-payments-commonOpen Payments - Message Parsing Library - ISO200224,031Apache-2.0Data structuresDevelopment tools open-payments-fednowOpen Payments - Message Parsing Library - FedNow20,701Apache-2.0Data structuresDevelopment tools open-payments-iso20022Open Payments - Message Parsing Library - ISO2002221,614Apache-2.0Data structuresDevelopment tools open-payments-iso20022-acmtOpen Payments - Message Parsing Library - ISO20022 ACMT21,891Apache-2.0Data structuresDevelopment tools open-payments-iso20022-admiOpen Payments - Message Parsing Library - ISO20022 ADMI21,674Apache-2.0Data structuresDevelopment tools open-payments-iso20022-authOpen Payments - Message Parsing Library - ISO20022 AUTH22,241Apache-2.0Data structuresDevelopment tools open-payments-iso20022-camtOpen Payments - Message Parsing Library - ISO20022 CAMT23,280Apache-2.0Data structuresDevelopment tools open-payments-iso20022-headOpen Payments - Message Parsing Library - ISO20022 HEAD21,817Apache-2.0Data structuresDevelopment tools open-payments-iso20022-pacsOpen Payments - Message Parsing Library - ISO20022 PACS21,754Apache-2.0Data structuresDevelopment tools open-payments-iso20022-painOpen Payments - Message Parsing Library - ISO20022 PAIN21,720Apache-2.0Data structuresDevelopment tools open-payments-iso20022-redaOpen Payments - Message Parsing Library - ISO20022 REDA21,816Apache-2.0Data structuresDevelopment tools open-payments-iso20022-remtOpen Payments - Message Parsing Library - ISO20022 REMT21,842Apache-2.0Data structuresDevelopment tools open-pgpImplementation of the IETF OpenPGP standard for secure communication and data encryption.843LGPL-2.0-or-laterAuthenticationCryptography open-pinceryMulti-agent platform for durable, event-driven AI agents43MIT OR Apache-2.0Command line utilitiesWeb programming::HTTP server open-protocolImplementation of the Atlas Copco/Torque Open Protocol specification in Rust.1,155non-standard open-protocol-clientLibrary for implementing Atlas Copco/Torque Open Protocol clients.962non-standard open-protocol-codecHelper library with encoding and decoding functionalities for Atlas Copco/Torque Open Protocol.1,571non-standard open-protocol-codec-proc-macroProcedural macros for deriving encode/decode implementations for Atlas Copco/Torque Open Protocol.1,360non-standard open-protocol-mqtt-adapterHelper library with encoding and decoding functionalities for Atlas Copco/Torque Open Protocol.720non-standard open-redact-pdfBrowser-first PDF redaction engine for structured, non-overlay PDF redaction via WebAssembly.155MIT OR Apache-2.0EncodingParser implementations open-redact-pdf-contentPDF content stream parsing and operation modeling for open-redact-pdf.320MIT OR Apache-2.0 open-redact-pdf-graphicsPDF page-space geometry and transform helpers for open-redact-pdf.483MIT OR Apache-2.0