All 305,250 crates, alphabetically

ultrafast-mcp-coreCore protocol implementation for UltraFast MCP16,442MIT OR Apache-2.0API bindingsAsynchronous ultrafast-mcp-macrosProcedural macros for the ULTRAFAST MCP implementation.475MIT OR Apache-2.0API bindingsAsynchronous ultrafast-mcp-monitoringMonitoring and observability for ULTRAFAST MCP with OpenTelemetry support.16,007MIT OR Apache-2.0API bindingsAsynchronous ultrafast-mcp-sequential-thinkingHigh-performance Rust-based MCP server and client for sequential thinking524MITAPI bindingsDevelopment tools ultrafast-mcp-serverHigh-performance server implementation for the Model Context Protocol (MCP)15,665MIT OR Apache-2.0API bindingsAsynchronous ultrafast-mcp-transportTransport layer for UltraFast MCP16,045MIT OR Apache-2.0API bindingsAsynchronous ultrafast-models-sdkRust SDK for calling 100+ LLM providers with dual mode operation (standalone/gateway)2,659MITAPI bindingsWeb programming::HTTP server ultragraphHypergraph data structure.47,558MITData structures ultrahdrSafe-ish Rust wrapper around libultrahdr700Apache-2.0External FFI bindingsMultimedia::Images ultrahdr-bakeBake HDR intent + SDR base into an UltraHDR JPEG (CLI)141Apache-2.0External FFI bindingsMultimedia::Images ultrahdr-coreCore gain map math and metadata for Ultra HDR - no codec dependencies18,940Apache-2.0EncodingMultimedia::Images ultrahdr-rsPure Rust Ultra HDR (JPEG with gain map) encoder/decoder2,981Apache-2.0EncodingMultimedia::Images ultrahdr-sysRaw FFI bindings to libultrahdr861Apache-2.0External FFI bindingsMultimedia::Images ultrahookA client for recieving webhooks from UltraHook4,332MITWeb programming ultrajpegJPEG encoder/decoder with mozjpeg support and Ultra HDR Image Format v1.1 support.301MIT OR Apache-2.0EncodingMultimedia::Images ultralightRust bindings for Ultralight: Next-Generation HTML Renderer11,598non-standardGraphicsGUI ultralight-buildA build tool helper for Ultralight crates.8,355MIT ultralight-errorsA collection of error types for Ultralight crates.1,902MIT ultralight-rsHigh-level Rust bindings for Ultralight.5,642MIT ultralight-sysC-level bindings for the Ultralight rendering engine.6,987MIT ultraloglogRust implementation of the UltraLogLog algorithm5,236Apache-2.0AlgorithmsData structures ultralyticsUltralytics Rust project template showcasing a minimal library and binary layout.77AGPL-3.0-or-laterComputer visionDevelopment tools ultralytics-inferenceUltralytics YOLO inference library and CLI for Rust2,178AGPL-3.0Command-line interfaceComputer vision ultralytics-template-rustUltralytics Rust project template showcasing a minimal library and binary layout.160AGPL-3.0-or-laterComputer visionDevelopment tools ultramanManage Procfile-based applications16,973MITCommand line utilities ultrametric_matrix_toolsToolbox that provides functions and data structures to generate and handle ultrametric matrices.1,613Apache-2.0 ultrapackerUltrapacker implementation in Rust26MIT OR Apache-2.0 ultrarouteHigh-performance, easy-to-use and safe routing system for bots1,664MIT ultraslayerUltra‑low latency DRAM refresh‑stall prevention using hardware‑level hedging.121Apache-2.0AlgorithmsConcurrency ultrasonicTransactional execution layer with capability-based memory access for zk-AluVM22,704Apache-2.0AlgorithmsCryptography ultrastar-txtA library for parsing and generating Ultrastar TXT files7,893MITParsing tools ultravioletA crate to do linear algebra, fast.1,108,765MIT OR Apache-2.0 OR Zlib ultronA web base text-editor with strong focus on displaying multi-width characters correctly12,809MIT ultron-coreThe core component of ultron editor3,650MIT ultron-ssgA syntax highlighting library ideal for usage in a static site generator9,718MIT ultron-syntaxes-themesSyntaxes and themes dump for ultron17,657MIT ultron-webUltron editor variant exposed as a web application12,316MIT uluaHigh level Luau bindings to Rust with async/await support1,027MITAPI bindingsAsynchronous ulua-macrosProcedural macros for the ulua crate.586MIT ulua-sysLow level (FFI) bindings to Luau1,265MITExternal FFI bindings ululeAPI bindings for the Ulule v1 HTTP API7,991MIT ulule-clientClient for the Ulule v1 HTTP API4,318MIT uluruA simple, fast, LRU cache implementation25,850,067MPL-2.0Data structuresNo standard library ulysa Universally Unique Lexicographically Sortable Identifier implementation, with a checksum4,175MIT ulysses-linkBackground service that extracts documentation files from code repositories and links them for Ulysses external folder importing149MITCommand line utilitiesFilesystem umIt is a bit like Nitril2,053MIT um32A UM-32 Universal Machine implemented in Rust4,448MIT umaUMA Protocol SDK for Rust11,754Apache-2.0 umacMessage authentication code based on universal hashing1,987MIT/Apache-2.0 umacro-libSimulate Keyboard & Mouse events in Linux (X11 & Wayland) with uinput.1,275MIT umadbEvent store built for Dynamic Consistency Boundaries868MIT OR Apache-2.0Command line utilitiesDatabase interfaces umadb-clientgRPC client library for UmaDB event store1,179MIT OR Apache-2.0Database interfacesNetwork programming umadb-coreCore event store implementation for UmaDB1,437MIT OR Apache-2.0Database interfaces umadb-dcbDynamic Consistency Boundary (DCB) API - Core types and traits for UmaDB event store2,521MIT OR Apache-2.0Database interfaces umadb-protoProtocol buffer definitions and gRPC service for UmaDB event store1,955MIT OR Apache-2.0Database interfacesNetwork programming umadb-servergRPC server implementation for UmaDB event store1,078MIT OR Apache-2.0Database interfacesNetwork programming umadb-toolsCommand-line tools for UmaDB databases (integrity checks, utilities).387MIT OR Apache-2.0Database interfaces umamiExperimental cross-platform GUI (use at your own peril)2,938MIT/Apache-2.0 umami-apiEasily interact with the Umami API (self-hosted instances)44EUPL-1.2API bindings umami_metricsA rust library to send metrics data to the Umami metrics platform1,500non-standard umanuxLibrary for managing Linux users and their directories1,656MIT OR Apache-2.0Command line utilitiesOperating systems umao_a2aUMAO A2A protocol binding — SSE mapper, task state mapping.28Apache-2.0 umao_agentsUMAO coordination for promptfleet A2A agents — AsyncNodeExecutor backed by agent_sdk.43Apache-2.0AsynchronousNetwork programming umao_coreUMAO spec primitives — Graph IR, validation, scheduling, events, planner types. WASM-safe.221Apache-2.0Data structuresWebAssembly umao_executorUMAO reference executor — orchestrator loop, NodeExecutor trait, DeterministicExecutor.126Apache-2.0 umapTBD1,754MIT umap-rsFast, parallel, memory-efficient Rust implementation of UMAP3,368BSD-3-Clause umariSDK for building event-sourced WASM components for the Umari runtime116Apache-2.0 umari-macrosDerive macros for umari (CommandInput, Event, EventSet)142Apache-2.0 umarkA Markdown Parser written in rust44MIT umark-libA Markdown Parser written in rust184MIT umashIdiomatic API for the umash hash/fingerprint function64,695MITAPI bindings umash-sysFFI wrappers for the umash hash/fingerprint function63,950MITExternal FFI bindings umasiA Rust-powered Neovim plugin for interactive Git notifications and status-line indicators715MITDevelopment toolsText editors umaskutility to deal with unix access mode1,294,480MITOperating systems::Unix APIs umathffast-math in rust15,980MITHardware supportMathematics umberbarminimalist X11 window manager10,629MIT umberwmminimalist X11 window manager41,139MIT umbraA macro to generate optional structs15,829MITRust patterns umbra-agentContainer-side MCP agent for Kubernetes diagnostics41MITCommand line utilitiesDevelopment tools umbra-coreShared types and K8s environment parsing for Umbra diagnostic proxy185MITDevelopment tools umbra-langA simple macro-based scripting language9,978MITCommand line utilitiesCompilers umbra-sdkRust SDK for Umbra desktop clients118MIT umbra-tui** Umbra TUI Framework: a simple yet highly configurable framework to generate flexible and fast TUIs **1,513GPL-3.0Command-line interfaceCommand line utilities umbra_sliceAn owned slice type with German string optimizations1,021MPL-2.0 OR Apache-2.0 umbrae-dlmm-sdkRust SDK for Umbrae DLMM (Discretized Liquidity Market Maker) — coming soon24MITAPI bindingsCryptography::Cryptocurrencies umbrae-dlmm-sdk-solanaRust SDK for Umbrae DLMM on Solana — coming soon26MITAPI bindingsCryptography::Cryptocurrencies umbralA batteries-included web framework for Rust. The facade: re-exports umbral-core and umbral-macros as one stable surface (`use…871MIT OR Apache-2.0 umbral-adminAuto-generated CRUD admin UI for umbral models.302MIT OR Apache-2.0 umbral-analyticsProduct-analytics event capture for umbral. PostHog backend with fire-and-forget capture, ambient client, and opt-in per-request…195MIT OR Apache-2.0 umbral-authAuthentication plugin for umbral: User model, argon2 password hashing, login helpers.421MIT OR Apache-2.0 umbral-cachePluggable cache backend for umbral. In-memory, SQLite, and Redis backends, plus view-level cache_page middleware.209MIT OR Apache-2.0 umbral-casingShared casing helpers (to_snake_case, pascal_case variants) for the umbral workspace. No dependencies — safe to use from…934MIT OR Apache-2.0 umbral-cliThe command-line tool for umbral. Library exposes `dispatch(app)` for user binaries; binary `umbral` is a global scaffolding tool…222MIT OR Apache-2.0 umbral-coreumbral internals: ORM, migrations, routing, DB backends, the Plugin trait. Do not depend on this directly; use the `umbral`…899MIT OR Apache-2.0 umbral-emailSMTP + template-driven transactional email for umbral.186MIT OR Apache-2.0 umbral-graphqlA real GraphQL API derived from your umbral models — relations and all. Opt-in plugin.54MIT OR Apache-2.0 umbral-healthLiveness + readiness probes for umbral. Mounts /healthz and /ready.197MIT OR Apache-2.0 umbral-livereloadOpt-in dev live-reload for umbral — a file watcher pushes reload / CSS-swap events to the browser over SSE; the client script is…216MIT OR Apache-2.0 umbral-logsRequest logging for umbral. A non-blocking capture layer records each HTTP request to a RequestLog model, browsable in the admin.230MIT OR Apache-2.0 umbral-macrosDerive macros for umbral (`#[derive(Model)]`, `#[task]`, etc.). Do not depend on this directly; use the `umbral` facade.897MIT OR Apache-2.0 umbral-oauthOAuth / social-auth for umbral: social login and account connection for Google, GitHub, and more, layered on umbral-auth.…218MIT OR Apache-2.0 umbral-openapiAuto-generated OpenAPI 3.0 schema + Swagger UI for umbral-rest endpoints.219MIT OR Apache-2.0 umbral-patchA BPS/IPS/UPS patcher for rust47MIT umbral-permissionsRole-based access control for umbral: ContentType, Permission, Group, user-group and user-permission M2M tables, plus the…345MIT OR Apache-2.0 umbral-playgroundInteractive, browsable API playground UI for umbral-rest.219MIT OR Apache-2.0 umbral-preImplementation of Umbral proxy reencryption algorithm37,447GPL-3.0-onlyCryptographyNo standard library umbral-realtimeReal-time push for umbral — SSE + WebSocket, with user- and group/room-targeted delivery over a pluggable broker.213MIT OR Apache-2.0 umbral-restAuto-generated JSON REST API over umbral models: serializers, viewsets, and routers.276MIT OR Apache-2.0 umbral-rlsPostgres Row-Level Security plugin for umbral. Declares policies once at App::build; the plugin's on_ready hook applies them via…199MIT OR Apache-2.0 umbral-rsA pure-Rust implementation of the Umbral threshold Proxy Re-encryption scheme5,945GPL-3.0-onlyAlgorithmsCryptography umbral-securitySecurity headers + CSRF middleware plugin for umbral.328MIT OR Apache-2.0 umbral-sessionsSession storage + cookie helpers for umbral. DB-backed sessions linked to umbral-auth users.461MIT OR Apache-2.0 umbral-signalsIn-process pub/sub signals for umbral. Plugins emit events; other plugins subscribe.198MIT OR Apache-2.0 umbral-socketLightweight IPC client and server over Unix sockets7,093MIT OR Apache-2.0 umbral-storageUnified storage plugin for umbral: merges static-file serving (umbral-static) and media uploads (umbral-media) onto one Storage…217MIT OR Apache-2.0 umbral-tasksDB-backed background task queue for umbral: define tasks, enqueue them, and run them with a worker process.194MIT OR Apache-2.0 umbral-tenantsSchema-per-tenant multitenancy for umbral: one Postgres database, one schema per tenant, and a shared `public` schema for…200MIT OR Apache-2.0 umbral-testingTest helpers for umbral apps: TestClient, temp pools, response assertions, and model factories (factory_boy-style).193MIT OR Apache-2.0 umbrellaA simple weather client and CLI tool for the WeatherStack API.2,737MIT OR Apache-2.0Command line utilities umcUMC Types1,617MIT OR Apache-2.0 umc_astThe Universal Markup-language Compiler, Rust-based.44MITCompilersDevelopment tools umc_html_astThe Universal Markup-language Compiler, Rust-based.143MITCompilersDevelopment tools umc_html_parserThe Universal Markup-language Compiler, Rust-based.43MITCompilersDevelopment tools umc_parserThe Universal Markup-language Compiler, Rust-based.438MITCompilersDevelopment tools umc_parser_napiThe Universal Markup-language Compiler, Rust-based.335MITCompilersDevelopment tools umc_spanThe Universal Markup-language Compiler, Rust-based.319MITCompilersDevelopment tools umcanA no_std rust crate to generate and parse CAN Frames for UltraMotion Actuators.6,782MPL-2.0 umdUniversal Markdown - A post-Markdown superset with Bootstrap 5 integration and extensible syntax44Apache-2.0Parser implementationsText processing umeA simple macro for generating Rust codes253,421MIT OR Apache-2.0Template engine umeyamaAn algorithm for finding the optimal translation, rotation, and scaling that aligns two sets of points with minimum…1,690MITAlgorithmsComputer vision umfUniversal Message Format (UMF) - Provider-agnostic message representation for LLM interactions with ChatML formatting, internal…1,279MIT OR Apache-2.0Data structuresEncoding umfpack-rsSome UMFPACK bindings for rust2,408 LGPL-2.1-only umgapThe Unipept Metagenomics Analysis Pipeline6,002MITCommand line utilitiesScience umiUMI device management tool.7,953MPL-2.0 umi-coreCore library for umi-tools-rs — UMI extraction, deduplication, grouping, and counting126MIT umi-memoryMemory library for AI agents with deterministic simulation testing26MITAlgorithmsScience umi-tools-rsA fast drop-in replacement for UMI-tools, written in Rust48MITCommand line utilitiesScience umicp-coreUMICP Rust bindings for high-performance communication and matrix operations with tool discovery7,193MITAPI bindingsNetwork programming umicp-sdkUMICP Rust bindings for high-performance communication and matrix operations with tool discovery398MITAPI bindingsNetwork programming umikoSimples gerenciador de webhooks usando a winapi6,420MITExternal FFI bindingsOperating systems::Windows APIs umiliMutate and observe Rust data structures2,307MIT umili-deriveDerive macros for umili2,290MIT umioMessage Based Readiness API In Rust16,337MIT/Apache-2.0 umjunsikUmjunsik Language compiler targeting Lamina IR350Apache-2.0CompilersParser implementations umkahigh level bindings for umka27BSD-2-Clause umka-syslow level FFI bindings for umka116BSD-2-Clause uml_parserPlantUML parser for rust5,288Apache-2.0 umlautslibrary for text transformation of german umlauts6,529MIT umlsA library and command line tool for working with the UMLS Metathesaurus4,951Apache-2.0 ummumm is a tiny task runner.1,824MIT umm-mallocA global allocator implementation for embedded systems using the umm_malloc library.8,862MITAPI bindingsEmbedded development umm-malloc-sysFFI bindings to the umm_malloc memory allocator.8,847MITEmbedded developmentExternal FFI bindings umoAll open time ranges of US stock market4,474MIT umpMicro message passing library for threads/tasks communication.21,0510BSDAsynchronousConcurrency ump-ngMicro message passing library for threads/tasks communication.4,4360BSDAsynchronousConcurrency ump-ng-autopostAutomatic message poster for ump-ng.7700BSDAsynchronousConcurrency ump-ng-serverServer message dispatch loop for ump-ng.9,0530BSDAsynchronousConcurrency ump-ngxCollection of ump-ng extensions.4,7260BSDAsynchronousConcurrency ump-serverServer message dispatch loop for ump.6,8130BSDAsynchronousConcurrency umpireCombat Quest of the Millennium1,968GPL-3.0-onlyGames umplUmpl is a a meme language that is a mix of c like languages and lisp like languages.10,885MIT umpxCollection of ump extensions.4,3300BSDAsynchronousConcurrency umrDaily tool library1,663MIT OR Apache-2.0 umscUyghur multi-script converter for Arabic, Latin, Yengi, Cyrillic, XJUS, and Uzbek Latin scripts62MITInternationalization (i18n)Text processing umt_rustUMT is a collection of useful functions that I personally created.3,148MIT umu-wrapperA simple templated wrapper for umu-launcher1,811MITCommand line utilitiesGames umu-wrapper-libA wrapper arround the umu-runner executable which library-based interaction with it thorugh commands2,629MIT umuxNano multiplexer2,318MIT umya-spreadsheetumya-spreadsheet is a library written in pure Rust to read and write xlsx file.872,163MITEncodingParser implementations unan uncomplicated text editor. yes, you can use it!3,954MIT un-i18nShared i18n bridge for U.N. series applications: TOML source of truth on the Rust side, bulk-bundled to svelte-i18n on the…22MITGUIInternationalization (i18n) un-motion-frameUNMotion と関連プロジェクト向けのトランスポート非依存モーションフレームスキーマ。112MITData structuresMultimedia un-motion-frame-zenohOfficial Zenoh Pub/Sub wire format and utilities for UNMotionFrame (payload schema lives in `un-motion-frame`).71MITMultimediaNetwork programming un-packUnpack is a simple, fast and user-friendly tool to analyze python project packaging.2,719MITCommand line utilities un-primCustom primitive types4,523GPL-3.0-or-later un_algebraSimple implementations of selected abstract algebraic structures--including groups, rings, and fields. Intended for self-study of…21,960MITMathematics unaccentA Rust crate to remove accents from strings, inspired by PostgreSQL's unaccent extension.55,991non-standardCommand line utilitiesInternationalization (i18n) unafU.N.A.F.; [U]SAGI.[N]ETWORK [A]pplication [F]ramework1,557MITGUIWebAssembly unaf-cliU.N.A.F.; [U]SAGI.[N]ETWORK [A]pplication [F]ramework :: [Cli]ent module1,544MITGUIWebAssembly unaf-svrU.N.A.F.; [U]SAGI.[N]ETWORK [A]pplication [F]ramework :: [S]er[v]e[r] module1,550MITWeb programming::HTTP server unaf-uisU.N.A.F.; [U]SAGI.[N]ETWORK [A]pplication [F]ramework :: [U]ser [I]nterface[s] module1,562MITGUIWeb programming::HTTP client unagiUniform adapters for blockchain APIs1,737MIT/Apache-2.0 unaiCommon AI abstractions67MIT unalignedA crate containing types for encapsulating unaligned values.2,940MIT OR Apache-2.0No standard library unalzALZ archive extractor28MITCommand line utilitiesCompression unameName and information about current kernel40,846,206MIT/Apache-2.0 uname-rsNo dependency, panic-less implementation of the POSIX utsname header and struct in Rust.176,349Apache-2.0 uname_shitouA fun game where you guess what number the computer has chosen.1,312MIT OR Apache-2.0 unarCross platform implementation of the unix ar utility2,793MIT unarc-cliUniversal Archive Extractor - CLI tool for extracting various archive formats101MIT OR Apache-2.0 unarc-rsUniversal archive extraction & decompression library for retro + modern formats (7z, ZIP, RAR, LHA/LZH, TAR, ARJ, ARC/PAK, ZOO,…9,935MIT OR Apache-2.0 unarchiveA crate to unarchive common archive formats1,142Apache-2.0 unarchiverCLI Tool for un/archive multiple formats of compressed files3,612MIT OR Apache-2.0Command line utilitiesCompression unarj-rsLibrary for handling & extracting arj archives.3,725MIT unarmParses ARM instructions30,774MITNo standard library unarrayUtilities for working with uninitialized arrays138,799,025MIT OR Apache-2.0 unary-opsPostfix in-place unary operators: toggle and negate21MIT OR Apache-2.0 unativePlatform-native integer types.235MIT OR Apache-2.0Hardware supportNo standard library unaviplaceholder1,447MIT OR Apache-2.0