All 305,250 crates, alphabetically

readings-probeProbe for vital metrics process logging881,424MIT/Apache-2.0Development tools::Profiling readkeyA very small library for finding out if a key is currently pressed on macOS.333,823MIT readlineWrapper around readline on Linux and Mac OS X, a shim on Windows. DO NOT USE: `rustyline` does the same job much better24,291MIT/Apache-2.0 readline-asyncAsync-ready readline alternative1,627EUPL-1.2 readline-rsA minimal readline library wrapper for the Rust programming language.3,925BSD-3-Clause readline-sysDeclarations for `libreadline` or `libedit`18,091MIT/Apache-2.0 readline_rs_compatA minimal readline library wrapper for the Rust programming language.10,856BSD-3-Clause readlnFinally! Normal input for Rust...1,302MPL-2.0 readlockA weird alternative to Arc<RwLock<T>>838,745MPL-2.0 readlock-tokioA weird alternative to Arc<RwLock<T>>, using tokio's RwLock557,137MPL-2.0 readmdA TUI markdown viewer with file browser, table of contents, and syntax highlighting24MITCommand line utilities readmdictA Rust implementation for reading MDict dictionary files (.mdx format)476MITParsing toolsText processing readmeDisplay README files in the terminal2,588MIT readme-apiReadme client, generated from the OpenAPI spec.1,544MIT readme-generatorA very easy-to-use README generator that works in your terminal. Never stress about readme again!4,118MIT readme-rustdocifierA library for rustdocifying `README.md` for inclusion in `lib.rs`2,623,174MITDevelopment tools::Build Utils readme-svg-statsGenerate SVG stats cards for your GitHub profile193MIT OR Apache-2.0Command line utilities readme-syncChecks that your readme and documentation are synchronized11,519MIT OR Apache-2.0Development tools::Testing readmemRead support for Verilog $readmemb/$readmemh files1,788MIT readmerCompose README.md files from Liquid or Jinja2 templates.4,576UnlicenseCommand line utilitiesDevelopment tools readmergerTool for rapidly merging FASTQ files. Never use cat again!1,504MITCommand line utilitiesScience readmetooRead markdown files with beautiful themes, syntax highlighting, and pager support69MITCommand line utilitiesText processing readmouseA very small library for reading the mouse location and mouse button presses on macOS.213,902MIT readonlyStruct fields that are made read-only accessible to other modules4,771,557MIT OR Apache-2.0No standard libraryNo standard library::No dynamic allocation readonly_wrapHelpers to create readonly structs with a zero-cost wrapper67MITNo standard libraryRust patterns readpassA tiny library for reading passwords without displaying them on the terminal3,353Apache-2.0Command-line interface readpassphraseRust API for OpenBSD's readpassphrase5,094BSD-2-ClauseAPI bindings readpassphrase-3Simple wrapper around readpassphrase(3)22,166MIT OR Apache-2.0 OR ISCCommand-line interface readpassphrase-sysMinimal Rust bindings for OpenBSD's readpassphrase7,002BSD-2-ClauseExternal FFI bindings readputFast and easy stdin input parsing for competitive programming in rust.4,689BSD-3-Clause readrFile reader840BSD-3-Clause readseekstructural source reader with stable line hashes1,944LGPL-2.1-or-later readsightMultilingual readability library — 86 languages, 17 formulas, TeX-based syllable counting via the Frank M. Liang algorithm.48MITInternationalization (i18n)Text processing readstorA CLI for Apple Books annotations12,757MIT OR Apache-2.0Command line utilities readviewRead. View. Done. — Universal viewer for Markdown, Mermaid, LaTeX and open document formats22MITCommand line utilitiesVisualization readwhitepaperRust client for ReadWhitepaper — blockchain whitepaper database with 30 whitepapers, 163 glossary terms, and 15-language…34MITAPI bindingsWeb programming::HTTP client readwiseA rust wrapper for the Readwise API.7,902CC0-1.0 readwriteCombine Read and Write into a single Read+Write object157,297MIT/Apache-2.0 readwriteseekfsExpose Read+Write+Seek (or just Read+Seek) as a FUSE-backed regular file3,838MIT/Apache-2.0Filesystem readyAsync ready states.6,276MIT OR Apache-2.0Asynchronous ready-active-safeLifecycle engine for externally driven systems43Apache-2.0No standard libraryRust patterns ready-paintA simple ready-paint schema using wgpu and winit.4,360MITGame developmentGraphics ready-setready, set, go: capability lifecycle orchestration for projects.40MIT OR Apache-2.0Command line utilitiesDevelopment tools ready-set-authLocal auth readiness provider for ready-set.18MIT OR Apache-2.0Command line utilitiesDevelopment tools ready-set-encryptSecrets capability provider plugin for ready-set.57MIT OR Apache-2.0Command line utilitiesDevelopment tools ready-set-goRun a command after a countdown1,031Apache-2.0 OR MITCommand line utilities ready-set-pluginPlugin scaffold generator for ready-set.18MIT OR Apache-2.0Command line utilitiesDevelopment tools ready-set-rustRust capability provider plugin for ready-set.38MIT OR Apache-2.0Command line utilitiesDevelopment tools ready-set-sdkShared conventions and helpers for ready-set plugins.143MIT OR Apache-2.0Development tools readyrabbitOpinionated RabbitMQ helper library, wrapping lapin.1,641MPL-2.0 reagentRedox OS Standard Tests3,244MIT reagent-rsA Rust library for building AI agents with MCP, custom tools and skills2,115MITAPI bindingsAsynchronous reah[WIP] 占坑 蕾雅1,809MIT reaktivA standalone, flexible fine-grained reactivity library46MIT OR Apache-2.0Data structuresRust patterns reaktorReaktor18,172Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MITCommand-line interfaceCommand line utilities realA lightweight library for extracting the real client IP address from HTTP requests, supporting common forwarding headers such as…7,596MITNetwork programmingWeb programming real-async-traitA proc macro that uses experimental features to work around type erasure for async traits4,529MIT OR Apache-2.0Asynchronous real-besselA pure Rust implementation of real-valued Bessel functions of the first and second kinds, for integer orders and real arguments.45MIT OR Apache-2.0AlgorithmsMathematics real-ipGet the "real ip" of an incoming request using the "forwarded", "x-forwarded-for" or "x-real-ip" headers set by reverse proxies.48,824MIT OR Apache-2.0 real-memoryReal (physical) memory5,861MIT OR Apache-2.0 real-procproc macros for floating point constants.6,316MIT OR Apache-2.0Rust patterns real-regexLinear-time, ReDoS-safe regular expressions with bounded lookarounds — Rust bindings to the REAL C++ engine.633MITText processing real-rsUniversal query engine with relational algebra - compile the same query to PostgreSQL, SQLite, MongoDB, and YottaDB22MIT OR Apache-2.0Database interfaces real-timeSafely share data with a real-time thread.8,221MIT OR Apache-2.0 real-time-global-weather-trackerA CLI-based weather forecasting app961MITCommand line utilitiesDatabase interfaces real-time-sqlxReal-time SQLx backend for Tauri1,799MIT OR Apache-2.0AsynchronousDatabase interfaces real__real262MIT OR Apache-2.0 real_c_stringGenerate string parseable in compiled binary13,515MIT real_engineA real-time 3D engine856MIT real_floatFloating point types that check for correctness and implement total ordering87,084MIT OR Apache-2.0Mathematics real_intervalContinuous interval arithmetic library.1,645MIT OR Apache-2.0 real_parentSymlink-safe path extension for parent directory5,109MIT OR Apache-2.0 real_time_fir_iir_filtersReal-time FIR and IIR filters designed for use with vst's46,320MITAlgorithmsMathematics real_time_issue_board_apiself‑hosted, real‑time issue board with a Rust backend (high‑performance API + WebSocket sync) for Remote Teams.22MITCryptographyWeb programming real_time_md_editor_apiServes a Rust Actix‑Web backend to Implement the WebSocket sync logic,oauth2 and jsonwebtoken crates, DB.23MITCryptographyWeb programming real_time_note_takerA terminal UI tool to take time stamped notes in real time.1,441MIT OR Apache-2.0Command line utilitiesDate and time real_uagenerates random &'static str http user-agent1,941non-standard real_ua_cligenerates random http user-agent to stdout1,575non-standard reala-subscriptionSimple subscription fetcher and parser.42MIT OR Apache-2.0Parser implementations realboxThe real copyless box3,165Apache-2.0 realdentalcosts-dataUS dental cost dataset 2026: average single-implant price, restorative cost index, cost-of-living index and affordability score…14CC-BY-4.0Data structures realfftReal-to-complex forward FFT and complex-to-real inverse FFT for Rust13,792,776MITAlgorithmsCompression realflight-bridgeRealFlightBridge is a Rust library that interfaces with RealFlight Link, enabling external flight controllers to interact with…7,715MITAerospace::DronesAerospace::Aerospace simulations realhydroperReserved namespace.787Apache-2.0 realhydroper-lateformatLate formatting of string parameters1,405Apache-2.0 realhydroper-lspLanguage Server Protocol implementation based on Tower5,447MIT OR Apache-2.0Asynchronous realhydroper-lsp-macrosInternal procedural macros for realhydroper-lsp3,730MIT OR Apache-2.0 realhydroper-pathWork with flexible file paths4,628ISC realhydroper-smodelSemantic modeling for Rust.1,003Apache-2.0Data structures realhydroper-smodel-procSemantic modeling for Rust: procedural macros.1,243Apache-2.0 realhydroper-sourcetextSource text containing line locations.2,073Apache-2.0 realhydroper-utf16Work with UTF-16 in Rust1,004Apache-2.0EncodingText processing realiaExtra conditional compilation macros6,198MIT realismA high-performance, production-ready scene management crate for Rust game engines118Apache-2.0Game developmentGame engines realisticTowards an API for the Real Numbers12,905Apache-2.0 realityplaceholder1,540MIT reality-modelIt is actually a joke.983WTFPL realitydefenderReality Defender SDK for Rust - Tools for detecting deepfakes and manipulated media3,489Apache-2.0API bindingsMultimedia realitykitFull RealityKit bindings for Rust — macOS 12+, iOS 15+, visionOS 1+, macOS 26+1,354GPL-3.0 realitykit-sysRaw FFI bindings to RealityKit — compiled automatically from Swift via build.rs75GPL-3.0 realizarDEPRECATED: Use aprender-serve instead. Re-exports aprender-serve for backward compatibility.10,530MIT realizeA blazingly fast configuration management library2,076Apache-2.0Command line utilitiesConfiguration realjumpTiny crate that loads and boots Real Mode code from an x86-64 kernel3,325MIT reallocA re-implementation of various ::alloc features1,257MIT really-notifyFor when you really, really just want to know that your config changed9,572Apache-2.0 reallyme-codecReallyMe codec utilities for PEM, lowercase hex, multibase, multicodec, multikey, CBOR, JCS, and base encodings.310Apache-2.0 reallyme-codec-base64Base64 codec utilities for ReallyMe Codec.277Apache-2.0 reallyme-codec-base64urlBase64url codec utilities for ReallyMe Codec.1,035Apache-2.0 reallyme-codec-cborCanonical CBOR codec support for ReallyMe Codec.174Apache-2.0 reallyme-codec-hexCanonical lowercase hexadecimal encoding for ReallyMe Codec.130Apache-2.0 reallyme-codec-jcsJSON Canonicalization Scheme support for ReallyMe Codec.937Apache-2.0 reallyme-codec-multibaseMultibase encoding and decoding support for ReallyMe Codec.996Apache-2.0 reallyme-codec-multicodecMulticodec identifiers used by ReallyMe Codec.981Apache-2.0 reallyme-codec-multikeyMultikey encoding and validation support for ReallyMe Codec.962Apache-2.0 reallyme-codec-pemPEM text armor parsing and encoding for ReallyMe Codec.752Apache-2.0 reallyme-codec-protoReallyMe codec protobuf error envelopes generated with Buffa.93Apache-2.0 reallyme-coseAudit-facing COSE helpers for ReallyMe identity software.53Apache-2.0CryptographyEncoding reallyme-cryptoCross-platform cryptographic primitives, key formats, and conformance-tested provider bindings.393Apache-2.0 reallyme-crypto-aes-kwAES Key Wrap primitive for ReallyMe Crypto.362Apache-2.0 reallyme-crypto-aes256-gcmAES-256-GCM authenticated encryption primitive for ReallyMe Crypto.393Apache-2.0 reallyme-crypto-aes256-gcm-sivAES-256-GCM-SIV authenticated encryption primitive for ReallyMe Crypto.377Apache-2.0 reallyme-crypto-argon2idArgon2id password hashing and key derivation primitive for ReallyMe Crypto.357Apache-2.0 reallyme-crypto-chacha20-poly1305ChaCha20-Poly1305 and XChaCha20-Poly1305 primitives for ReallyMe Crypto.379Apache-2.0 reallyme-crypto-concat-kdfJWA ECDH-ES Concat KDF primitive for ReallyMe Crypto.352Apache-2.0 reallyme-crypto-constant-timeConstant-time comparison helpers for ReallyMe Crypto.342Apache-2.0 reallyme-crypto-coreShared typed errors and algorithm identifiers for ReallyMe Crypto.765Apache-2.0 reallyme-crypto-csprngCryptographically secure random byte generation for ReallyMe Crypto.350Apache-2.0 reallyme-crypto-dispatchAlgorithm dispatch, codec binding, and structural validation for cryptographic primitives.413Apache-2.0 reallyme-crypto-ed25519Ed25519 signing primitive for ReallyMe Crypto.385Apache-2.0 reallyme-crypto-hkdfHKDF key derivation primitive for ReallyMe Crypto.359Apache-2.0 reallyme-crypto-hmacHMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 primitives for ReallyMe Crypto.365Apache-2.0 reallyme-crypto-hpkeReallyMe RFC 9180 HPKE protocol wrapper.344Apache-2.0 reallyme-crypto-jwkJWK envelope encoding and canonicalization for ReallyMe Crypto keys.377Apache-2.0 reallyme-crypto-jwk-multikeyJWK and Multikey public-key envelope conversion for ReallyMe Crypto.374Apache-2.0 reallyme-crypto-kmacKMAC256 key derivation primitive for ReallyMe Crypto.123Apache-2.0 reallyme-crypto-ml-dsa-44ML-DSA-44 signature primitive for ReallyMe Crypto.380Apache-2.0 reallyme-crypto-ml-dsa-65ML-DSA-65 signature primitive for ReallyMe Crypto.380Apache-2.0 reallyme-crypto-ml-dsa-87ML-DSA-87 signature primitive for ReallyMe Crypto.380Apache-2.0 reallyme-crypto-ml-kem-1024ML-KEM-1024 key encapsulation primitive for ReallyMe Crypto.396Apache-2.0 reallyme-crypto-ml-kem-512ML-KEM-512 key encapsulation primitive for ReallyMe Crypto.385Apache-2.0 reallyme-crypto-ml-kem-768ML-KEM-768 key encapsulation primitive for ReallyMe Crypto.397Apache-2.0 reallyme-crypto-p256P-256 ECDSA and ECDH primitives for ReallyMe Crypto.449Apache-2.0 reallyme-crypto-p384P-384 ECDSA primitive for ReallyMe Crypto.397Apache-2.0 reallyme-crypto-p521P-521 ECDSA primitive for ReallyMe Crypto.399Apache-2.0 reallyme-crypto-pbkdf2PBKDF2-HMAC key derivation primitive for ReallyMe Crypto.361Apache-2.0 reallyme-crypto-protoReallyMe crypto protobuf identifiers generated with Buffa.121Apache-2.0 reallyme-crypto-rsaRSA signature verification primitive for ReallyMe Crypto.343Apache-2.0 reallyme-crypto-secp256k1secp256k1 ECDH, ECDSA, and BIP-340 Schnorr primitives for ReallyMe Crypto.435Apache-2.0 reallyme-crypto-sha2SHA-2 digest primitives for ReallyMe Crypto.360Apache-2.0 reallyme-crypto-sha2-256SHA-256 digest primitive for ReallyMe Crypto.363Apache-2.0 reallyme-crypto-sha3SHA-3 digest primitives for ReallyMe Crypto.388Apache-2.0 reallyme-crypto-sha3-256SHA3-256 digest primitive for ReallyMe Crypto.387Apache-2.0 reallyme-crypto-signerSigner trait abstraction (HSM/QSCD/remote-sign friendly).370Apache-2.0 reallyme-crypto-slh-dsaSLH-DSA-SHA2-128s signature primitive for ReallyMe Crypto.356Apache-2.0 reallyme-crypto-x-wingX-Wing hybrid KEM primitives over X25519 and ML-KEM.367Apache-2.0 reallyme-crypto-x25519X25519 key agreement primitive for ReallyMe Crypto.380Apache-2.0 reallyme-crypto-x448X448 key agreement primitive for ReallyMe Crypto.117Apache-2.0 reallyme-joseJOSE, JWT, JWS, and JWE helpers for ReallyMe identity.54Apache-2.0AuthenticationCryptography reallyme-jose-protoReallyMe JOSE protobuf boundary messages generated with Buffa.17Apache-2.0AuthenticationCryptography realmRust / Elm base full stack web framework.37,054MIT realm-cliSandboxed Docker environments for git repos555MIT realm-clientrealm-client: http client for realm backend3,093MIT realm-codecParser and writer for Realm binary database files (v9) — read tables, build new files44MIT OR Apache-2.0Database interfacesParser implementations realm-db-readerA Rust library for reading Realm database files2,830MIT realm-langlocalisation library for the realm framework14,497Apache-2.0 realm-rsA collaborative, real-time toolkit for building and playing a 2D top-down RPG together47AGPL-3.0-only realm-sdkRust SDK for Realm.15MIT OR Apache-2.0 realm-web-rsImplementation of the realm-web npm package in rust.1,557GPL-3.0-onlyAPI bindingsWebAssembly realm_coreRealm's core facilities.27,398MIT realm_hookRealm's flexible hooks.13,602MIT realm_ioRealm's high performance IO collections.52,793MIT realm_lbRealm's flexible hooks.15,173MIT realm_macrosMacros for fifthtry and realm.7,420MIT realm_syscallRealm's convenient syscall collections.31,542MIT realmanrealman robot Rust SDK4,066MIT realmeA flexible and extensible configuration management library for Rust, designed to simplify the process of loading and managing…14,403MIT OR Apache-2.0 realme_macrosA flexible and extensible configuration management library for Rust, designed to simplify the process of loading and managing…2,825MIT OR Apache-2.0 realmenvZero-config development environment with isolated runtimes, process management, and intelligent HTTP proxy543MITCommand line utilitiesDevelopment tools realmsA powerful and lightweight graphics library for making Rust games11,563MITGame developmentGame engines realpathreturns the canonicalized absolute pathname3,508MIT/Apache-2.0 realpath-extAn implementation of realpath() (with some extensions) for *nix systems.43,545MIT realpath-rsA cross-platform Rust equivalent of python3's `os.path.realpath`10,844MIT realpixA HEALPix implementation in pure rust168Apache-2.0 OR MIT realraum_backend_projectorA projector remote-control server backend for Realraum1,468AGPL-3.0-or-later realraum_backend_soundsA sound-playing server backend for Realraum1,496AGPL-3.0-or-later realraum_uiA frontend for Realraum1,463AGPL-3.0-or-later realsComputable and unified real numbers2,828MIT realsense-rustHigh-level RealSense library in Rust55,792Apache-2.0Computer visionExternal FFI bindings realsense-sysRust abstraction layer for the RealSense SDK C library52,512Apache-2.0Computer visionExternal FFI bindings realsense-t265Pure-Rust driver for the Intel RealSense T265 tracking camera (6DoF pose, IMU, fisheye video)56Apache-2.0Hardware supportScience::Robotics realsense-tools-rsTools for visualizing and interacting with RealSense cameras in Rust24GPL-3.0 realtek-rtl8125Minimal Realtek RTL8125 PCIe Ethernet driver922MITEmbedded developmentHardware support realtimerealtime4,131non-standard realtime-corerealtime core5,405non-standard realtime-rsclient library for supabase realtime. async and sync interfaces.1,642MIT OR Apache-2.0Database interfaces realtime_ndt_scan_matcherPure-Rust, ROS-free, no_std-capable core of the Autoware NDT (Normal Distributions Transform) localization engine.14MIT OR Apache-2.0 realtime_results_scraperScript to scrape realtime results html pages.23MIT realtime_termgraphA realtime plotting library that outputs a graph to the terminal4,987GPL-3.0 realtor-rsUnofficial client for Canadian Realtor site7,611CC-BY-NC-4.0 realtragame technology1,950GPL-3.0