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All 305,250 crates, alphabetically

Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.

tzselect-rsRust port of upstream tzselect.ksh — the interactive tzdb timezone selector19Apache-2.0 Command line utilities tzspA CLI tool to listen for TZSP packets and convert them to PCAP459GPL-3.0+ tzsttzst14,739MulanPSL-2.0 tzsuite-rsIntegration and upstream-archaeology court for the Rust-native tz suite (eggert/tz coverage ledger + matrix + receipt)18Apache-2.0 Command line utilities Date and time tztsimple command-line utility that converts a given time from one timezone to another.3,445MIT Command line utilities tztailtztail (TimeZoneTAIL) allows you to view logs in the timezone you want6,541non-standard tztrConvert timestamps between timezones. Reads from stdin or file, auto-detects timestamp formats, and preserves the original format…20MIT Command line utilities Date and time tzupdateSet the system timezone based on IP geolocation.7,245MIT Command line utilities uAI optimized Rust utils crate548MIT OR Apache-2.0 Operating systems u-analyticsStatistical process control, process capability, Weibull reliability, change-point detection, measurement system analysis (Gage…774MIT Mathematics Science u-doeDesign of Experiments (DOE) framework: factorial, Plackett-Burman, CCD, Box-Behnken, Taguchi, effects analysis, RSM, and…123MIT Mathematics Science u-geometryDomain-agnostic computational geometry: primitives, polygons, NFP, collision detection, spatial indexing.639MIT Algorithms Mathematics u-insightStatistical analysis and data profiling engine with C FFI bindings.236MIT Algorithms Science u-metaheurDomain-agnostic metaheuristic optimization framework: GA, BRKGA, SA, ALNS.902MIT Algorithms Science u-nestingDomain-agnostic 2D/3D spatial optimization engine - nesting and bin packing331MIT Algorithms Mathematics u-nesting-coreCore traits and abstractions for U-Nesting spatial optimization engine1,019MIT Algorithms Mathematics u-nesting-cuttingCutting path optimization for U-Nesting spatial optimization engine310MIT Algorithms Mathematics u-nesting-d22D nesting algorithms for U-Nesting spatial optimization engine773MIT Algorithms Mathematics u-nesting-d33D bin packing algorithms for U-Nesting spatial optimization engine583MIT Algorithms Mathematics u-nesting-ffiC FFI interface for U-Nesting spatial optimization engine209MIT API bindings u-num-ittypenum macro for matching types from a given range4,676Unlicense u-numflowMathematical primitives for the U-Engine ecosystem: statistics, probability, random sampling, and collections.1,650MIT Mathematics Science u-os-hub-clientu-OS Data Hub Client1,995MIT Data structures Embedded development u-plusPretty Unicode code point literals: U+12345 instead of '\u{12345}'1,544non-standard No standard library Rust patterns u-rasUniversal Resource Allocation and Scheduling - Domain-agnostic optimization with GA, CP-SAT, dispatching rules, and time…107MIT OR Apache-2.0 Algorithms Science u-routingVehicle routing optimization: TSP, CVRP, VRPTW with constructive heuristics, local search, GA, and ALNS.177MIT Algorithms u-scheduleDomain-agnostic scheduling framework: job-shop models, dispatching rules, GA encoding, constraint programming.179MIT Algorithms u-sdkSome useful SDKs2,526MIT u-sdk-commonutils for u-sdk807MIT u-siemA framework for building custom SIEMs141,332MIT Parsing tools u-siem-apache2Library to be used to build a custom SIEM with the framework uSIEM8,753MIT u-siem-awsuSIEM AWS log parser1,590MIT Parsing tools u-siem-datasetmanager-sqliteLibrary to be used to build a custom SIEM with the framework uSIEM2,782MIT u-siem-elasticsearchuSIEM Elasticsearch Input/Output logging6,340MIT Parsing tools u-siem-enricheruSIEM log enricher3,918MIT Parsing tools u-siem-kerneluSIEM Kernel. Library to be used to build a custom SIEM with the framework uSIEM12,112MIT Parsing tools u-siem-mysqluSIEM MySQL Input/Output logging2,783MIT Parsing tools u-siem-opnsenseLibrary to be used to build a custom SIEM with the framework uSIEM4,132MIT u-siem-paloaltoLibrary to be used to build a custom SIEM with the framework uSIEM7,633MIT u-siem-pulsesecureuSIEM PulseSecure VPN parser1,604MIT Parsing tools u-siem-sonicwallLibrary to be used to build a custom SIEM with the framework uSIEM5,246MIT u-siem-sqlite-storeLibrary to be used to build a custom SIEM with the framework uSIEM2,799MIT u-siem-squiduSIEM Squid proxy parser1,632MIT Parsing tools u-siem-syslogSyslog listener for uSIEM5,271MIT Parsing tools u-siem-windnsWindows Server DNS parser for uSIEM5,235MIT Parsing tools u128U128 helpers for Solana programs.28,551Apache-2.0 u144Unsigned Integer 144 bits13,185Apache-2.0 u160Unsigned Integer 160 bits5,067Apache-2.0 u16cstrA macro for creating c-style u16 wide strings at compile time.19,157MIT u2A Rust Authentication Library for U2F and FIDO2 on the web. A fork of the `u2f` crate.4,659MIT OR Apache-2.0 Authentication u24An unsigned 24-bit integer type.6,277MIT OR Apache-2.0 Data structures Encoding u2400_pathnodepath cluster base library8,186non-standard u256A bare minimal U256 implementation.5,920Apache-2.0 u256-literalProcedural macro for converting u256 literals to U256 at compile time.75,307MIT OR Apache-2.0 u2cp437Bare-bones Unicode to code page 437 conversion1,803MIT Encoding No standard library::No dynamic allocation u2fRust FIDO U2F Library96,479MIT OR Apache-2.0 Authentication u2f-hatter-forkRust FIDO U2F Library1,007MIT OR Apache-2.0 Authentication u2fframingThis package contains codecs for u2fhid standard.1,677Apache-2.0 u2secureMake your Linux system more secure through interactive CLI | 通过交互式的cli让你的Linux系统更安全57MIT u2sizedouble word integral type7,668MIT/Apache-2.0 u3Utilities written by 3tothe6445MIT OR Apache-2.0 u32-i32-converterA simple utility to convert between u32 and i32 made with deepseek35MIT OR Apache-2.0 u32errA neat error type for FFI functions (where non-zero = failure)2,610MIT Embedded development No standard library u4nibble (4-bit integer) library, with packed representations19,133MIT OR Apache-2.0 u64-idA tiny library providing a u64 backed id.4,789MIT OR Apache-2.0 Game development u64_2Ultra-fast dual u64 variable-length encoding / 超高速双 u64 变长编码66MulanPSL-2.0 u64_array_bigintsSimple biginteger library based on u64 arrays21,388MIT OR Apache-2.0 Data structures No standard library u64_array_bigints_coreCore library for `u64_array_bigints`21,534MIT OR Apache-2.0 Data structures No standard library u64_array_bigints_macrosMacro library for `u64_array_bigints`20,794MIT OR Apache-2.0 Data structures No standard library u64_dynVariable-length 64-bit integer codings that take at most 9 bytes.1,613Unlicense u7an implementation of dotnet's 7bit int in Rust1,249GPL-3.0 u880A cycle-stepped MME U880 emulator749GPL-3.0-or-later Emulators No standard library u8_ternary_treeA Ternary Search Tree based on [u8] input and output62MIT u8arcImplementation of Nintendo's U8 archive format, found in Skyward Sword for example933MIT u8bitsThis crate provides a macro to generate accessors for parts of newtype byte arrays.1,849MIT Embedded development Hardware support u8charAn alternative to the char type that uses UTF-8 as its in-memory representation.1,330MIT u8dlUniversal 8bit Device Library for driving monochrome devices like OLEDs and LCDs1,394MIT u8g2-fontsA text renderer for embedded-graphics, based on U8g2.60,752non-standard Embedded development No standard library u8litCustom literal to convert strings to UTF-8 bytes.46MIT OR Apache-2.0 u8poolStack for u8 slices in a client-provided buffers10,818MIT Embedded development Memory management u8suA utility library with u8 slices2,313MIT u9Unsigned 9-bit integer type.2,364MITNFA No standard library Rust patterns u_interfaceCrate to allow easy requests to uHunt's API4,000Apache-2.0 u_my_crateA library to add 1 to any number in i32 format.27MIT u_uLibrary allowing conversions of JPEG diagrams to SVGs3,263MIT uaCross-platform User-Agent generator with best-effort installed browser detection (Chrome/Edge/Firefox/Brave/Opera/Chromium;…90MIT OR Apache-2.0 Operating systems Parsing tools ua-clientOPC UA browser/inspector with a terminal UI and a native egui GUI, built on async-opcua195MIT GUI Network programming ua-inspectorUser-Agent parser972MIT OR Apache-2.0 Parser implementations ua-job-parserSimple parser for gathering vacancies from ukranian job websites5,702MIT ua-orchestratorA command-line tool for automating OPC UA node interactions using a CSV action script73Apache-2.0 Network programming ua-parserRust implementation of the User Agent String Parser project7,523,685Apache-2.0 ua_contact_bookParser, which take file filled with lines of contact and converts it into JSON format2,519MIT ua_generatorRandom User Agent Spoofer in Rust.299,840MIT Web programming UaaSUwU as a Service: The fastest text uwuifier in the west running behind an HTTP server.2,877MIT uabsAbsolute value function that returns an unsigned integer26,254Apache-2.0 uacuniversal assembly compiler672MIT uactorThe fastest and most modular actor system that doesn't force you to pay for what you don't need34,057MIT uactor-deriveDerive macros for uactor1,096MIT uaddrA unified address type that can represent an IPv4 / IPv6 socket address, a UNIX domain socket (UDS) address, or a hostname with a…75MIT OR Apache-2.0 Network programming No standard library uafUI Automation Framework1,570MIT uaiA plugabble command-line interface for OpenAI API1,621MIT uaicp-adapter-rigUAICP Reliability Protocol Adapter for Rig (Rust-native AI Agent Framework)46Apache-2.0 API bindings Development tools uaicp-coreUAICP Core Types and Traits — Rust Primitives122Apache-2.0 API bindings Development tools uairAn extensible pomodoro timer15,128MIT Command line utilities uao-rsbig5 uao encoder/decoder1,787MIT uapToolkit for looking up aircraft registration information.3,134MIT uap-rsA Rust implementation of the UA Parser7,997MIT uap-rustUser agent parser library for Rust based on the ua-parser project15,563MIT uaparserA Rust implementation of the UA Parser14,085,678MIT uaparser-rsA simple user agent parser for rust3,057MIT uapiWrappers for OS APIs on UNIX-like platform1,136,857MIT OR Apache-2.0 Operating systems::Unix APIs uapi-configRust implementation of the UAPI Configuration Files Specification2,503AGPL-3.0-only Configuration uapi-procInternal macros for the uapi crate. DO NOT USE!1,123,690MIT OR Apache-2.0 uapi-sdk-rustUAPI Rust SDK - idiomatic, typed, domain-driven API client.527MIT OR Apache-2.0 API bindings Web programming::HTTP client uapi-versionCompare versions according to the UAPI Version Format Specification140,131MIT Text processing uarp-dumpDumps files from UARP super binaries found in Apple device firmware.397MIT Command line utilities Embedded development uartA clean implementation of the UART_16550 device functionality.8,400AGPL-3.0-or-later Embedded development No standard library uart-proto-detectorBibliothèque universelle no_std pour la détection et le découpage de trames UART sur systèmes embarqués.24GPL-2.0-or-later Embedded development No standard library uart16550Provide definition of 16550 uart registers.13,256MulanPSL-2.0 OR MIT Embedded development Hardware support uart8250This crate provide a struct with many methods to operate uart 8250.12,880MIT Embedded development uart_16550Simple yet highly configurable low-level driver for 16550 UART devices, typically known and used as serial ports or COM ports.…1,837,768MIT OR Apache-2.0 Embedded development Hardware support uart_xilinxThis crate provide a struct with many methods to operate uarts in Xilinx's FPGA: XPS UART Lite, AXI UART Lite...4,177MIT Embedded development uartcatchained uart memory bus protocol strongly inspired from EtherCAT and simplified74MIT Asynchronous Embedded development uasmA library to build the UASM compiler, for usage in build scripts.1,441Watcom-1.0 uassetParsing of Unreal Engine asset files (uassets)14,282MIT OR Apache-2.0 Game development Parser implementations uasset-lens-analysisStatic-analysis checks for Unreal Engine 5 assets — lint rules, size budgets, Blueprint and material metrics24MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-asset-dbSQLite-backed index of Unreal Engine 5 assets with duplicate detection50MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-dependency-graphIn-memory dependency graph for Unreal Engine 5 assets — impact, dead-asset and redirector analysis51MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-git-diffDiff Unreal Engine 5 assets between Git HEAD and the working tree23MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-scannerHand-written parser for Unreal Engine 5 .uasset / .umap binary files — no editor required85MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-sharedCore domain types (AssetPath, AssetType, package version) for Unreal Engine 5 asset analysis97MIT OR Apache-2.0 Command line utilities Development tools uasset-lens-watcherDebounced filesystem watch sessions for Unreal Engine 5 asset directories23MIT OR Apache-2.0 Command line utilities Development tools uastUnicode Aware Saṃskṛta Transliteration in Rust 🦀31,459Apache-2.0 Command line utilities Encoding uasyncfast, safe, async executor2,692MIT Asynchronous Concurrency uatuA Matrix bot that watches channels17,699GPL-3.0-or-later uavAccurate UAV simulation by integrating dynamics model3,261MIT OR Apache-2.0 uavcanFull functionality reference implementation of uavcan in Rust3,478Apache-2.0/MIT Embedded development No standard library uavcan-coreThe primary (core) part of the uavcan implementation in rust. Core is also fitting as this crate is and always will be no_std2,044Apache-2.0/MIT Embedded development No standard library uavcan-deriveMakes it possible to derive Uavcan related types4,916Apache-2.0/MIT uaxbecause I want the v12 rules for the bit I'm using1,911OSL-3.0 ubCan bundle multiple sources to a single one and extract back.1,908MIT Algorithms Command line utilities ub64urlsafe base64 encode / decode9,715MulanPSL-2.0 ub64mA cli tool for decoding base64 values in JSON and YAML3,785GPL-3.0-or-later ubase64Lightweight, simple, and configurable base64 encode and decode.1,249Unlicense Algorithms Command line utilities ubeA collection of data structures, algorithms and utilities that can be used for an assortment of purposes44Apache-2.0 ubenchstopgap rust benchmarking solution for microcontrollers1,489MIT uberuber1,800MIT uber_apiA library coded in Rust and hosted on crates.io for Uber's API. In particular, Uber Direct with their DaaS API. The Menu API…81,046MIT uberbyteBit manipulation for dummies6,293MIT Data structures Parsing tools uberfetchA neofetch alternative with esoteric terminal animations28MIT Command line utilities ubermindProcess daemon manager with Procfile support423MIT Command line utilities Development tools ubermind-coreCore types and configuration for ubermind process manager235MIT ubermind-daemonDaemon process supervisor for ubermind - v2 alpha with native supervision128MIT Command line utilities Development tools ubersessionA simple mechanism for cross-domain WWW session establishment - command line program1,417ISC ubersession_axumA simple mechanism for cross-domain WWW session establishment - utilities for use with axum775ISC ubersession_coreA simple mechanism for cross-domain WWW session establishment - core data structures and utilities2,082ISC ubersession_serverA simple mechanism for cross-domain WWW session establishment - framework-independent server logic1,195ISC ubiThe Universal Binary Installer library237,892MIT OR Apache-2.0 ubi-cliThe Universal Binary Installer CLI tool14,049MIT OR Apache-2.0 ubi-rsA Rust cli and library for ubicloud API2,577Apache-2.0 ubidFixed-width random identifiers with Crockford base32 encoding.793MIT Encoding ubidium-rsRust gRPC bindings for the Race Result Ubidium timing decoder SDK (ubidium-sdk v0.9.10)42MIT API bindings Network programming ubigeo-peruLista de regiones, provincias y distritos de Peru3,130GPL-3.0 ubilerntuiThis is a terminal UI for learning for the UKW-Sprechfunkzeugnis für den Binnenschiffahrtsfunk.10,884GPL-3.0-or-later Command line utilities ubioAccess local files or HTTP resources with the ara ReadAt trait2,322Apache-2.0 OR MIT Asynchronous ubiq-rustSDK for the Ubiq Security platform35MIT ubiquisyncConflict-free sync of structured data and rich text over commodity cloud storage or a dedicated server.40MIT OR Apache-2.0 ubiquisync-coreCore protocol types and sync engine for Ubiquisync — conflict-free sync of structured data over commodity cloud storage or a…151MIT OR Apache-2.0 ubiquisync-postgresPostgres storage backend for Ubiquisync — conflict-free sync of structured data over commodity cloud storage or a dedicated…53MIT OR Apache-2.0 ubiquisync-sqlSQL primitives for Ubiquisync — structured SQL data synced over commodity cloud storage or a dedicated server.58MIT OR Apache-2.0 ubiquisync-sqliteSQLite storage backend for Ubiquisync — conflict-free sync of structured data over commodity cloud storage or a dedicated server.92MIT OR Apache-2.0 ubiquisync-tablesTable protocol for Ubiquisync — structured rows synced over commodity cloud storage or a dedicated server.44MIT OR Apache-2.0 ubiquityn-directional file synchronization utility11,891MIT ubiquity-coreCore types and traits for Ubiquity consciousness-aware mesh1,888Fair Command line utilities Network programming ubiquity-databaseDatabase abstraction layer for Ubiquity supporting SQLite and Astra DB955Fair Command line utilities Network programming ubiquity-hyperquiverHyperQuiver extension: multilinear hyperedges for complex multi-input interactions in directed graph structures29MIT OR Apache-2.0 Algorithms Data structures ubiquity-kernelCore kernel types and traits for Ubiquity consciousness-aware distributed intelligence systems218MIT OR Apache-2.0 Algorithms Mathematics ubiquity-meshUnix socket mesh for zero-port agent communication877Fair Command line utilities Network programming ubiquity-quiverDirected graph structures (quivers) for neural network-inspired computation with nodes, arrows, weights, and activations27MIT OR Apache-2.0 Algorithms Data structures ubiquity-transportTransport abstraction for WASM and native consciousness mesh1,265Fair Command line utilities Network programming ubitsBit fields and masks.8,345non-standard ubjsonUBJSON parser1,714MIT OR Apache-2.0 Encoding Parser implementations ubl-authDID-first Ed25519 JWT/JWKS verification for OIDC-style flows. Enforces alg=EdDSA, checks exp/nbf/iat, JWKS cache.61MIT Authentication Cryptography ubl-axum-kitShared Axum middleware for UBL services: JWT/PoP verification, rate limiting, tenant extraction213MIT OR Apache-2.0 Authentication Web programming ubl-codecUBL codec: Canonical JSON✯Atomic encode/decode + binary TLV for Universal Business Ledger.596MIT OR Apache-2.0 Cryptography Data structures ubl-cryptoUBL crypto helpers: SK wrapper, KID, HMAC, did:key, batch verify for Universal Business Ledger.682MIT OR Apache-2.0 Cryptography Data structures ubl-directorySubject registry for UBL: people, orgs, LLMs, devices — links chip owners to identity29MIT OR Apache-2.0 Authentication Web programming ubl-idUniversal Business Ledger identity primitives: DIDs (did:ubl:*), CIDs (cid:blake3:*), Wallets, and PoP headers. RFC-0001…266MIT OR Apache-2.0 Authentication Cryptography ubl-ledgerUBL Ledger: append-only NDJSON with async writer, WAL, verify for Universal Business Ledger.409MIT OR Apache-2.0 Cryptography Data structures ubl-mcpSecure, audited Model Context Protocol (MCP) client/server with policy gates and audit logging.147MIT API bindings Asynchronous ubl-officeExecution environment for LogLine Agents: lifecycle, memory, and I/O coordination.46MIT Asynchronous Concurrency ubl-runtimeUBL runtime: router+middlewares, budgets, ledger logging for Universal Business Ledger.32MIT OR Apache-2.0 Asynchronous Data structures ubl-sirpUBL SIRP: HTTP capsule+receipt, HMAC, idempotency, server for Universal Business Ledger.318MIT OR Apache-2.0 Asynchronous Cryptography ubl-typesUBL types: IDs + DIM, Display/FromStr, validator & helpers for Universal Business Ledger.847MIT OR Apache-2.0 Cryptography Data structures ubl-wasmUBL Chip execution engine for WebAssembly - BLAKE3 + JSON Atomic + Decision CID46MIT OR Apache-2.0 Cryptography WebAssembly ublkRust library for user space block drivers1,566MIT ublk-syslibublksrv bindings1,595MIT ublk-vramA block device that exposes OCL memory to userspace via ublk.5,269MIT Command line utilities ubloxA crate to communicate with u-blox GPS devices using the UBX protocol65,721MIT ublox-cellular-rsDriver crate for u-blox cellular devices, implementation follows 'UBX-13002752 - R65'4,302MIT OR Apache-2.0 Embedded development No standard library