All 305,250 crates, alphabetically

objc2-video-subscriber-accountBindings to the VideoSubscriberAccount framework1,533Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-video-toolboxBindings to the VideoToolbox framework29,100Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-virtualizationBindings to the Virtualization framework33,868Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-visionBindings to the Vision framework64,278Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-watch-connectivityBindings to the WatchConnectivity framework2,374Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-watch-kitBindings to the WatchKit framework2,384Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-web-kitBindings to the WebKit framework10,831,231Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-xc-testBindings to the XCTest framework750Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc2-xc-ui-automationBindings to the XCUIAutomation framework913Zlib OR Apache-2.0 OR MITAPI bindingsDevelopment tools::FFI objc_exceptionRust interface for Objective-C's throw and try/catch statements.10,407,125MIT objc_idRust smart pointers for Objective-C reference counting.13,841,254MIT objc_test_utilsUtilities for testing Objective-C interop.12,382MIT objcacheCache objects using redis1,098GPL-3.0-only objdiff-coreA local diffing tool for decompilation projects.13,404MIT OR Apache-2.0 objectA unified interface for reading and writing object file formats.543,096,217Apache-2.0 OR MIT object-allocAn object allocator trait for Rust.15,556Apache-2.0/MITAlgorithmsCaching object-alloc-testA suite of tests for object allocators.3,190Apache-2.0CachingMemory management object-builderA tool to create configs5,221MIT object-cachesave or get object from file cache6,103MIT object-chainAd-hoc structure builder61,163MITData structuresNo standard library object-collectionA collection that can store multiple values of types.10,355LGPL-3.0 OR Apache-2.0 object-controller-trackerTrack object-controller pairs.1,836MIT/Apache-2.0 object-detection-opencv-rustObject detection utilities in Rust programming language for YOLO-based neural networks in OpenCV ecosystem1,525MITAlgorithmsComputer vision object-idUnique object ID with no generation93,066MIT object-mergeTraits useful for recursively merging document-like objects14,564MIT object-poolA thread-safe object pool with automatic return and attach/detach semantics3,033,536MIT/Apache-2.0ConcurrencyData structures object-providerTrait for requesting values by type from a given object2,965MIT OR Apache-2.0 object-queryAbstracted object queries12,629MIT OR Apache-2.0 object-rainbowdistributed object model7,311MIT OR Apache-2.0 object-rainbow-amtkey-sorted distributed AMT176MIT OR Apache-2.0 object-rainbow-amt-setHAMT-like non-iterable set for object-rainbow122MIT OR Apache-2.0 object-rainbow-append-treeappend-only tree list for object-rainbow668MIT OR Apache-2.0 object-rainbow-applyasynchronous map trait for object-rainbow-history52MIT OR Apache-2.0 object-rainbow-array-mapAMT-style bitmap-indexed map823MIT OR Apache-2.0 object-rainbow-chain-treeself-referential append-only list for object-rainbow542MIT OR Apache-2.0 object-rainbow-derivederive macros for object-rainbow6,447MIT OR Apache-2.0 object-rainbow-encryptedencryption for object-rainbow704MIT OR Apache-2.0 object-rainbow-encrypted-storeencrypted adapter for object rainbow external stores38MIT OR Apache-2.0 object-rainbow-fetchallrecursively walk object-rainbow trees341MIT OR Apache-2.0 object-rainbow-hamtdistributed HAMT444MIT OR Apache-2.0 object-rainbow-historyGit-ish diff-by-diff change history751MIT OR Apache-2.0 object-rainbow-history-storeobject-rainbow-{history+store} integration137MIT OR Apache-2.0 object-rainbow-jsonserde_json for object-rainbow724MIT OR Apache-2.0 object-rainbow-kubo-rawlocal IPFS storage using Kubo API and raw codecs34MIT OR Apache-2.0 object-rainbow-local-maplocal storage for object-rainbow450MIT OR Apache-2.0 object-rainbow-marshallserialized format for object-rainbow238MIT OR Apache-2.0 object-rainbow-parse-prefixprefix compression for AMT in object-rainbow211MIT OR Apache-2.0 object-rainbow-pointdefault pointer type for object-rainbow1,763MIT OR Apache-2.0 object-rainbow-schemainterpretable schema for `object-rainbow`40MIT OR Apache-2.0 object-rainbow-storestorage abstraction for object-rainbow513MIT OR Apache-2.0 object-rainbow-store-opendalApache OpenDAL™ storage for object-rainbow242MIT OR Apache-2.0 object-rainbow-triedistributed Trie544MIT OR Apache-2.0 object-rainbow-unique-diffsobject-rainbow-history deduplication123MIT OR Apache-2.0 object-rewriteRewrite object files with modifications6,906Apache-2.0 OR MIT object-safeImplement object-unsafe traits for trait objects5,152MIT OR Apache-2.0Data structuresRust patterns object-spaceAn object store library for highly concurrent program written in Rust.3,666Apache-2.0/MITConcurrencyData structures object-storageThis library is used to manipulate oss or cos8,500MIT OR Apache-2.0 object-storage-libobject-storage-lib is a file upload service based on s3.10,341MIT OR Apache-2.0 object-storage-sdkobject-storage-sdk is the client sdk of object-storage-lib.4,102MIT OR Apache-2.0 object-store-clientAsync Rust client library for Object Storage Service - S3-compatible object storage64Apache-2.0API bindingsWeb programming::HTTP client object-store-hedgingRead request hedging for object-store108MIT OR Apache-2.0 object-store-wasmWebAssembly object_store implementation14,582MIT OR Apache-2.0WebAssembly object-typestruct Object - wrapper for anything type.2,638BSD-3-Clause object-warehouseA lightweight object storage database1,587AGPL-3.0-onlyDatabase implementations object_adminA client and model library for Liferay DXP's object admin api, auto generated by open-api-generator.2,107MIT OR Apache-2.0 object_detectionThe interface for object detection4,130MITComputer vision object_detectorObject detection using ORT and the yoloe-26-seg model. This model can detect multiple objects per image, each having a tag,…132AGPL-3.0 object_orientedObject-oriented programming1,545MIT OR Apache-2.0 object_storeA generic object store interface for uniformly interacting with AWS S3, Google Cloud Storage, Azure Blob Storage and local files.74,433,169MIT/Apache-2.0 object_store_awsObject store extension for AWS cloud216BSL-1.0 object_store_opendalobject_store Integration for Apache OpenDAL1,510,624Apache-2.0 object_transferAn object transfer library for various message broker and/or protocols217MITAsynchronousNetwork programming objecthashA content hashing algorithm which works across multiple encodings (JSON, Protobufs, etc)15,840Apache-2.0 objectidA Rust implementation of a BSON ObjectId.17,955MIT objectifyA crappy object file manipulation tool/library.4,407MIT objectify-binA crappy object file manipulation tool/library.1,559MIT objectionableobjectionable storage of unsized types inline inside allocated objects8,052MIT OR Apache-2.0No standard libraryNo standard library::No dynamic allocation objectiveAn experimental crate for constructing efficient virtual data structures.1,487MIT objective-rustSeamlessly bind Rust and Objective-C code.2,652MIT OR Apache-2.0 objective-rust-macrosMacros for objective-rust.1,887MIT OR Apache-2.0 objectiveaiObjectiveAI SDK, definitions, and utilities259MIT objectiveai-apiObjectiveAI API Server478MIT objectiveai-cliObjectiveAI CLI: a thin WebSocket client for the resident daemon442MIT objectiveai-cli-sdkLibrary surface for objectiveai-cli: structured JSON Lines output types.29MIT objectiveai-mcpMCP (Model Context Protocol) server for ObjectiveAI375MIT objectiveai-mcp-cliMCP (Model Context Protocol) CLI for ObjectiveAI107MIT objectiveai-mcp-filesystemMCP (Model Context Protocol) filesystem helpers for ObjectiveAI281MIT objectiveai-mcp-laboratoryMCP (Model Context Protocol) filesystem helpers for ObjectiveAI84MIT objectiveai-mcp-proxyMCP (Model Context Protocol) proxy server for ObjectiveAI557MIT objectiveai-sdkObjectiveAI SDK, definitions, and utilities923MIT objectiveai-sdk-macrosProcedural macros for the ObjectiveAI SDK1,041MIT objectiveai-wasm-jsJavaScript WebAssembly bindings for ObjectiveAI96MIT objectpoolYet another lock-free object pool, support no_std2,525MIT OR Apache-2.0ConcurrencyData structures objectscale-clientA Rust client for ObjectScale Management.3,300Apache-2.0Network programming objectscript-coreLanguage Server for ObjectScript35MIT objectstore-clientClient SDK for Objectstore, the Sentry object storage platform46,878non-standard objectstore-typesShared types for the Objectstore client and server47,123non-standard objektRenamed to dyn-clone: https://crates.io/crates/dyn-clone457,215MIT OR Apache-2.0 objekt-clonableAttribute wrapper for objekt14,312MIT objekt-clonable-implAttribute wrapper for objekt15,177MIT objets_metier_rsBibliothèque Rust moderne et sûre pour l'API COM Objets Métier Sage 100c - Production Ready96MITAPI bindingsExternal FFI bindings objexobject entity creation and persistence using matcat and geospec294MIT objforcesAllows to calculate mouvement of objects based on forces on a 3D axis1,466GPL-3.0-onlyMathematicsNo standard library::No dynamic allocation objgrepA tool to dump binarys1,444MIT objidGenerate a random object identifier.12,530MIT objioThis crate provides simple traits for reading and writing objects.7,200MIT objldParse and load .obj files with line-level parallelism, fast.5,256MIT OR Apache-2.0 objpokeMinimal in-place objcopy replacement178,322MIT OR Apache-2.0Development tools::Build Utils objpoolThread-safe generic object pool10,531MIT objqtifyTurn Unix text output into structured objects — like PowerShell, but for your shell17MITCommand line utilities objrDrew's very fast ObjC Rust bindings1,403MIT OR Apache-2.0Development tools::FFIOperating systems objr_procmacroprocmacro crate for objr1,669MIT OR Apache-2.0 objrsObjective-Rust: the unholy union of Rust and Objective-C.9,217Apache-2.0 OR MIT OR MPL-2.0API bindingsDevelopment tools::FFI objrs_demoDemonstration of objrs.4,845Apache-2.0 OR MIT OR MPL-2.0 objrs_frameworks_app_kitBindings for Apple's AppKit framework.4,873Apache-2.0 OR MIT OR MPL-2.0API bindingsExternal FFI bindings objrs_frameworks_core_graphicsBindings for Apple's CoreGraphics framework.5,733Apache-2.0 OR MIT OR MPL-2.0API bindingsExternal FFI bindings objrs_frameworks_foundationBindings for Apple's Foundation framework.7,781Apache-2.0 OR MIT OR MPL-2.0API bindingsExternal FFI bindings objrs_frameworks_foundation_macrosMacro magic for things like compile-time NSStrings.8,463Apache-2.0 OR MIT OR MPL-2.0 objrs_frameworks_metalBindings for Apple's Metal framework.4,997Apache-2.0 OR MIT OR MPL-2.0API bindingsExternal FFI bindings objrs_frameworks_metal_kitBindings for Apple's MetalKit framework.4,299Apache-2.0 OR MIT OR MPL-2.0API bindingsExternal FFI bindings objrs_macrosMacro magic for objrs.9,949Apache-2.0 OR MIT OR MPL-2.0 objrs_runtimeBindings for Apple's libobjc runtime for objrs.9,833Apache-2.0 OR MIT OR MPL-2.0 objsLightweight macros for creating typed, or untyped, named, or anonymous objects in Rust.19MIT OR Apache-2.0Development toolsRust patterns objscriptWIP1,515MIT objshObject oriented shell2,074MIT objstorOne stop for storing all your data.19,120MIT objstoreCore objstore crate: common traits, types, and APIs used by storage backend implementations.501MIT OR Apache-2.0 objstore_configConfiguration utilities and types for the objstore family of crates.51MIT OR Apache-2.0 objstore_fsFilesystem backend for objstore254MIT OR Apache-2.0 objstore_memoryMemory backend for objstore255MIT OR Apache-2.0 objstore_s3_lights3_light backend for objstore249MIT OR Apache-2.0 objtReference counted object helpers3,776MIT objtalka lightweight realtime database for IoT projects11,377MIT obkvOptimized-bytes key and a value store698,010MITDatabase implementationsEncoding oblast-demoHigh-level wrapper for blst1,971MIT obligeBounded and fixed-length data structures and primitives37AGPL-3.0-or-laterData structuresRust patterns obliqOblique Strategies by Brian Eno and Peter Schmidt, in your terminal48Apache-2.0Command line utilities oblique-strategiesOblique strategies CLI1,529MIT obliterateForce-remove Files and Directories on Linux Including Paths with 000 Permissions.372MITFilesystem oblivcWrapper for Obliv-C5,326AGPL-3.0API bindings obliviaA no-crate-dependency game engine library1,227MPL-2.0 obliviateSmall utility to delete files older than a certain amount of days.7,065MIT oblivionA fast, lightweight, and secure end-to-end encryption protocol based on ECDHE5,237AGPL-3.0 oblivion-codegenOblivion Codegen5,362AGPL-3.0 oblivious-transferSimpleOT from Orlandi and Chou in pure-Rust, using curve25519-dalek, with OT extensions.1,734MIT oblivious_state_machineThis crate defines an abstraction level to conveniently describe state machines.7,555MIT OR Apache-2.0 oblivious_transfer_protocolsOblivious Transfer (OT), Oblivious Transfer Extensions (OTE) and multiplication protocol using them21,377Apache-2.0 oblodaiОфициальный Rust SDK для платёжного шлюза Oblodai: приём платежей, выплаты, кошельки, вебхуки.69MITAPI bindings oblongmacOS-like window management for Sway — snap, MRU switching, Super key shortcuts, and a GUI config editor19MITCommand line utilities obluxone-bit less unsigned integer types3,280MIT OR Apache-2.0 obmrsAs a participant, you will create a structure to receive and hold the exchange-distributed order book. This structure will be…2,938MIT obmsgFor quickly processing message events in the onebot protocol.733MIT obnama backup program11,139AGPL-3.0-or-later obnam-benchmarka backup program1,600AGPL-3.0-or-later obniz-rustA Rust client library for Obniz IoT platform483MITAPI bindingsEmbedded development obnthAllows securely opening files in untrusted directories on *nix systems.2,912MITFilesystem oboannotationAccess annotations of biomedical ontologies60non-standard oboeSafe interface for oboe an android library for low latency audio IO8,165,886Apache-2.0API bindingsMultimedia::Audio oboe-sysUnsafe bindings for oboe an android library for low latency audio IO8,020,667Apache-2.0External FFI bindingsMultimedia::Audio oboe-typesTyped primitives for the oboe adaptive DNS posture orchestrator — read from the blackmatter dns_posture JSON sidecar.12MIT obofoundryStructures to deserialize OBO Foundry listings into.27,332MITScience obographs-devLoad Obographs data files.5,579non-standard obolø289Apache-2.0 obol-cliCLI to estimate the USD cost of an AI-agent transcript (Claude Code, Codex, Pi).230Apache-2.0Command line utilities obol-coreRead AI-agent transcripts (Claude Code, Codex, Pi) and estimate their USD cost.311Apache-2.0Development toolsParsing tools oboronEncryption and encoding library for developer ergonomics: prefix entropy, compact outputs, high performance1,133MIT OR Apache-2.0CryptographyEncoding oboron-cliCLI for the oboron protocol — string-in/string-out authenticated symmetric encryption with obtext encoding. Produces the `ob`…113MIT OR Apache-2.0Command line utilitiesCryptography oboron-cli-conformanceConformance test suite for the oboron protocol CLI surface. Ships canonical test vectors and the `oboron-cli-conformance` binary…60MIT OR Apache-2.0Command line utilitiesDevelopment tools::Testing oboron-cli-coreShared CLI plumbing for the oboron protocol tooling — profile/config management for the ~/.oboron/ dir, key normalization, file…140MIT OR Apache-2.0Command line utilities oboron-pyPython bindings for Oboron - general purpose encryption and encoding library55MITAPI bindingsCryptography obozrenie-coreObozrenie Game Server Browser. Core library.3,594GPL-3.0 obozrenie-gtkObozrenie Game Server Browser. GTK+ GUI.2,544GPL-3.0 obraA fast, semantic search CLI for your Obsidian vault, built in Rust42CC-BY-NC-4.0Command line utilities obrahHigh-level Rust wrapper around OpenCL using OBWIO5,324Apache-2.0Development toolsScience obrewinCore components of Obrewin Trading Framework1,348non-standard obrewin-data-structuresData structures for Obrewin3,651non-standardFinance obrewin-networkNetworking components for Obrewin3,382non-standardFinance obrewin-utilsGeneral utilities for Obrewin3,866non-standardFinance obsA blazing fast & lightweight CLI tool for interacting with the Obsidian vaults1,995MIT obs-buildBuild-time codegen helpers for the obs SDK; reads .proto via buffa-build + buffa-reflect.201MITDevelopment tools::Build Utils obs-cliThe `obs` CLI: lint, validate, schema, codegen, query.58MIT obs-clickhouseSingle-table ClickHouse sink for the obs SDK.118MITDevelopment tools obs-coreRuntime engine for the obs SDK: Observer, Sink, schema registry, sampling, config.395MITDevelopment tools obs-countdownA CLI tool to write countdown timer files for OBS Studio6,486MITCommand line utilities obs-doWebSocket control utility for OBS Studio10,244MIT OR Apache-2.0Command line utilities obs-hotkeyA lightweight Rust daemon for controlling OBS Studio with global hotkeys on Wayland and X11515AGPL-3.0-or-laterCommand line utilitiesMultimedia::Encoding obs-kitFaçade for the obs observability SDK; re-exports the everyday API (init, observer, sinks, macros).76MITDevelopment tools obs-live-tailIn-process live-tail subscriber registry + Sink for obs envelopes.100MITDevelopment tools obs-logA very simple Rust crate that binds the log facade crate to OBS plugin logging API2,912MIT obs-macrosProcedural macros for the obs SDK: #[derive(Event)], emit!, scope!, instrument.138MITDevelopment tools obs-otelOpenTelemetry Protocol (OTLP) sinks for the obs SDK.112MITDevelopment tools obs-parquetSingle-table Parquet/Arrow analytics sink for the obs SDK.120MITDevelopment tools obs-promPrometheus scrape exporter for obs: derives counters, gauges, and histograms from MEASUREMENT-annotated envelope fields.104MITDevelopment tools obs-protoCanonical obs/v1 protobuf schemas: ObsEnvelope, ObsBatch, options, built-in events.440MITDevelopment tools obs-scene-monitor-changerChange OBS scene based on which monitor your mouse cursor resides1,518MIT obs-sdk针对华为云的OBS工具封装rust版本的sdk2,146MITAPI bindingsCryptography obs-sink-batchGeneric batching sink framework for obs: triggers + retry + spool + escalation with a pluggable BatchBackend trait.100MITDevelopment tools obs-sysBindgen of <obs/obs.h>15,925GPL-2.0 obs-towertower::Layer for HTTP propagation + ObsHttpRequest/Client events for the obs SDK.83MITDevelopment tools obs-tracing-bridgeBidirectional bridge between `tracing` and the obs SDK.98MITDevelopment tools