All 305,250 crates, alphabetically

ublox-coreUblox M8 driver for embedded hal1,780BSD-3-ClauseEmbedded developmentHardware support ublox-rnxEfficient RINEX production from a Ublox GNSS receiver7,800MIT OR Apache-2.0Command-line interfaceCommand line utilities ublox-short-range-rsDriver crate for u-blox short range devices, implementation follows 'UBX-14044127 - R40'2,898MIT OR Apache-2.0Embedded developmentNo standard library ublox-socketsCommon sockets layer for host-based ublox devices33,011MIT OR Apache-2.0Embedded developmentNo standard library ublox_deriveUtility macros for the ublox crate58,975MIT ublue-rsA CLI tool built for creating Containerfile templates based on the Ublue Community Project15,016Apache-2.0Command line utilities ublxTUI to index once, enrich with metadata, and browse a flat snapshot in a 3-pane layout with multiple modes.292MIT or Apache-2.0Command line utilitiesDatabase interfaces ubmscA client for Battery Management Systems (BMS).2,432MITCommand line utilitiesVisualization ubo_segenCLI tool to generate uBlock Origin's blocklists for search engine results.477GPL-3.0-or-laterCommand line utilities uboot-aarch64-rtuboot-aarch64-rt1,491Apache-2.0 uboot-nand-dumpDumps NAND flash image via U-Boot serial interface.91MIT OR Apache-2.0Command line utilities uboot-riscv64-rtuboot-riscv64-rt1,469Apache-2.0 uboot-rtuboot-rt1,211Apache-2.0 uboot-shellA crate for communicating with u-boot74,957MITDevelopment toolsEmbedded development ubox[WIP] Zero-cost database designed for high speed and security1,795Apache-2.0 ubpfRust bindings for iovisor's fork of ubpf1,910AGPL-3.0External FFI bindingsNetwork programming ubpf-assemblereBPF assembler and JIT compiler for ubpf105MIT ubpf-rsA user-space eBPF virtual machine written in Rust1,585MIT ubpf-sysRust FFI bindings for iovisor's fork of ubpf4,215AGPL-3.0External FFI bindingsNetwork programming ubqLock-free unbounded MPMC queue with no_std + alloc support.183MITConcurrencyData structures ubrUnibranch is a wrapper around git to enable a single branch workflow with stacked commits.801MIT ubsa CLI for fetching real-time University at Buffalo class schedules4,214MIT ubs-liba library for fetching real-time University at Buffalo class schedules3,242MIT ubtUnified Binary Tree implementation based on EIP-7864151MIT OR Apache-2.0CryptographyData structures ubt-cliUniversal build tool — one CLI for every ecosystem94MITCommand line utilitiesDevelopment tools ubuildRun commands in a portable environment755Apache-2.0 ubuntu-amiScrape cloud-images.ubuntu.com for AMI ids.9,657MIT OR Apache-2.0 ubuntu-distro-infoUtility for parsing Ubuntu distro-info-data3,410GPL-3.0 ubuntu-mqtt2ha-reporterA service that reports Ubuntu system status to Home Assistant via MQTT691AGPL-3.0-or-later ubuntu-versionConvert Ubuntu versions to codenames, and vice versa17,910MITOperating systemsOperating systems::Unix APIs ubusWork-in-progress: OpenWRT ubus client library in pure Rust19,239BSD-2-ClauseAPI bindingsEmbedded development ubx2cggttsCGGTTS collection from UBlox GNSS receiver879MPL-2.0Command-line interfaceCommand line utilities ubx2rinexU-Blox to RINEX deserializer1,772MPL-2.0Command-line interfaceCommand line utilities ubyteA simple, complete, const-everything, saturating, human-friendly, no_std library for byte units.15,741,289MIT OR Apache-2.0EncodingNo standard library ucunicode2,247MIT OR Apache-2.0 uc2pdfA Unicode text-to-PDF utility10LGPL-2.0-or-laterCommand line utilitiesText processing uc8151no_std library for the UC8151(IL0373) e-ink display with embedded-graphics support10,414MITNo standard library uc8159A driver for the uc8159 e-ink controller, found for example in the Pimoroni Inky Impression display3,314Apache-2.0 ucalca simple to use calculator27GPL-3.0-only ucalc_liba simple to use calculator103GPL-3.0-only ucalc_numbersa simple to use calculator176GPL-3.0-only ucanImplement UCAN-based authorization with conciseness and ease!86,306Apache-2.0AuthenticationCryptography ucan-capabilities-objectShared Capabilities object structure found in UCANs, CACAOs and ReCaps45,820MIT OR Apache-2.0 ucan-key-supportReady to use SigningKey implementations for the ucan crate41,217Apache-2.0CryptographyEncoding ucas-iclassiClass API for UCAS629MITCommand line utilitiesNetwork programming ucbA Tool to mark bug1,316MIT uccUniversal compiler invocator for heterogeneous CPU/GPU computation applications6,342AGPL-3.0-only ucdExtends the char type to provide access to most fields of the UCD, Unicode Character Database, as of version 9.0.0. It aims to be…505,981MIT ucd-dataA crate that just simply stores all UCD data as a `static` array2,131MIT OR Apache-2.0 ucd-general-category-rangesUnicode character ranges by general category28MIT ucd-generateA program for generating packed representations of the Unicode character database that can be efficiently searched.50,501MIT OR Apache-2.0Internationalization (i18n)Text processing ucd-parseA library for parsing data files in the Unicode character database.2,293,586MIT OR Apache-2.0 ucd-rawUninterpreted access to the unicode UCD9,439MITNo standard libraryText processing ucd-trieA trie for storing Unicode codepoint sets and maps.267,751,602MIT OR Apache-2.0 ucd-utilA small utility library for working with the Unicode character database.21,513,821MIT OR Apache-2.0 ucelofkaSimple program to issue invoices5,691GPL-3.0Command line utilities ucfA universal code formatter8,280MITCommand line utilitiesDevelopment tools ucfirstUppercase the first letter of a string58,108MITText processing ucfpUniversal Content Fingerprinting (UCFP) core library27Apache-2.0 ucfx_byteswapXbox 360 BE → PC LE UCFX block converter (library + CLI)103MITDevelopment tools::ProfilingEncoding ucgA configuration generation grammar.65,373Apache-2.0 uchanMulti-producer single-consumer channel for message passing8,745MITAlgorithmsConcurrency uchardetDetect character encodings using uchardet library69,635Unlicense uchardet-gitC++ 库 uchardet (git 版本) 的简单封装。127MIT uchardet-git-sysC++ 库 uchardet (git 版本) 的 unsafe 绑定，由 bindgen 生成。120MIT uchardet-sysLow-level, unsafe interface to uchardet encoding detector30,629Unlicense/MPL-1.1/MIT uchikomiHigh-performance code complexity and churn analysis engine25MITCommand line utilitiesDevelopment tools uchimizucache1,540MIT OR Apache-2.0 uchiwaA declarative static site generator40GPL-2.0-or-later uchrtranslate char values to the characters themselves, and vice versa3,241GPL-3.0 uchronoA no_std compatible time point and duration library2,768MIT OR Apache-2.0 uciA library to programmatically communicate with UCI compatible chess engines35,226MITGame engines uci-parserUniversal Chess Interface parser16,240MPL-2.0 uci2Rust bindings for uci243MPL-2.0API bindingsConfiguration uci2-sysLow-level bindings for uci263BSD-3-ClauseExternal FFI bindings uci_rsan openwrt's UCI (Unified Configuration Interface) parser and serializer.4,379MIT uciengineUse chess engine wrapper supporting uci command necessary for playing a game. Analysis is not supported.42,883MIT uciferOpenWrt UCI Document Format Library426GPL-3.0-or-laterConfigurationParser implementations ucipheruci1,728MIT uckb-jsonrpc-client[Unofficial] A simple rust JSON-RPC SDK for CKB.6,444Apache-2.0 OR MIT uckb-jsonrpc-core[Unofficial] A simple rust JSON-RPC SDK for CKB.7,760Apache-2.0 OR MIT uckb-key[Unofficial] Lightweight CKB key utilities.3,891Apache-2.0 OR MIT uckb-key-utils[Unofficial] Lightweight CKB key utilities.2,954Apache-2.0 OR MIT uckb-scanner[Unofficial] Gather statistics on CKB.3,715Apache-2.0 OR MIT uckb-scanner-utils[Unofficial] Gather statistics on CKB.2,872Apache-2.0 OR MIT uckb-spec[Unofficial] CKB chain specification.2,981Apache-2.0 OR MIT uclRust bindings to libucl10,986MIT ucl-parserParser for the Unified Content Language (UCL)409MITParsing toolsText processing ucl-sysUCL bindings for rust2,884GPL-2.0-or-laterAPI bindingsCompression uclanrA random word picker that gives you actually useful words.4,900MIT uclclicommand line compressor/decompressor using libucl / NRV1,647GPL-3.0-or-later ucliA command line interface for CLI applications6,238MIT OR Apache-2.0Command line utilities ucliciousUclicious is a wrapper around Universal Configuration Library (UCL) parser with a lot of sugar.14,138BSD-2-ClauseConfiguration uclicious-libucl-sysLow-level bindings to libucl.10,971non-standard uclicious_deriveProcedural macro to derive FromObject trait from uclicious crate.10,128BSD-2-ClauseConfiguration uclientUniversal HTTP client for Rust35,868MIT ucloud-cdn-log-parserParse UCloud CDN log files to CSV5,154MIT ucm-apiHTTP API server for UCM graph queries and event ingestion61MITAlgorithmsDevelopment tools ucm-cliCLI tool for UCM impact analysis on codebases61MITAlgorithmsDevelopment tools ucm-coreCore types and traits for the Unified Content Model939MITData structures ucm-engineTransformation engine for the Unified Content Model489MITText processing ucm-eventsEvent sourcing and projection layer for UCM graphs274MITAlgorithmsDevelopment tools ucm-graph-coreCore graph types and entity model for the UCM impact-analysis engine445MITAlgorithmsDevelopment tools ucm-ingestData ingestion adapters for UCM (Git, Jira, Linear, code parsing)213MITAlgorithmsDevelopment tools ucm-observeObservability and tracing hooks for UCM event streams138MITAlgorithmsDevelopment tools ucm-reasonBayesian impact analysis and intent reasoning for UCM graphs214MITAlgorithmsDevelopment tools ucobsμCOBS — Consistent Overhead Byte Stuffing. no_std, zero-alloc, fastest, most-tested COBS implementation.520MITEmbedded developmentEncoding ucocoTry using Rust in cocos2d-x1,505MIT uconA simple unit conversion library1,763MIT uconsole-sleepuConsole sleep service88GPL-3.0 ucontextglibc's ucontext binding for rust9,208MIT ucotron-configConfiguration system for Ucotron cognitive memory framework (TOML parsing, validation)29MIT ucotron-coreCore traits, types, and data generation for Ucotron cognitive memory framework105MIT ucotron-sdkRust SDK client for the Ucotron cognitive memory framework30MIT ucpCollection of Useful CLI Parsers1,739MITCommand-line interfaceParser implementations ucp-agentAgent graph traversal system for UCP knowledge graphs232MITAlgorithmsData structures ucp-apiHigh-level API for UCP213MIT ucp-cliCommand-line interface for Unified Content Protocol126MITCommand line utilitiesText processing ucp-codegraphCodeGraph extraction and projection for UCP339MIT ucp-graphGeneric graph runtime, stores, and traversal APIs for UCP documents401MIT ucp-llmLLM-focused utilities for the Unified Content Protocol496MITCommand line utilitiesText processing ucp-localUniversal Context Pipeline — local-first MCP server for grounding LLMs in your files34Apache-2.0Command line utilitiesDatabase interfaces ucp-observeObservability utilities for UCP319MITDevelopment tools::Debugging ucp-schemaRuntime resolution of UCP schema annotations2,220Apache-2.0Development toolsWeb programming ucp-translator-htmlHTML to UCM document translator237MITText processing ucp-translator-markdownMarkdown translator for UCP566MITText processing ucpackRust implementation of the ucpack serialization format used in the Arduino Alvik3,438MIT ucredsafe access to ucred(3C), user credentials for processes6,718MIT OR Apache-2.0 ucrtbaseLink Rust programs to the system `ucrtbase.dll` and eliminate the MSVC redist dependency88MIT OR Apache-2.0Development tools::Build UtilsOperating systems::Windows APIs ucs2UCS-2 decoding and encoding functions2,227,192MPL-2.0EncodingNo standard library ucsf_nmrParser for ther UCSF NMR file format8,287MIT OR Apache-2.0 ucsiSI-based unit typing system1,613MIT OR Apache-2.0 ucuiA minimal UCI engine frontend experiment3,578GPL-3.0 ucumImplementation of the Unified Code for Units of Measures (UCUM)15,046CECILL-B ucum-unitsA total, conformance-tested implementation of UCUM (Unified Code for Units of Measure): parse, validate, analyze, compare and…910MITMathematicsParser implementations ucvtUniversal Converter26MIT ucxucx mid-level bindings2,161MIT ucx-sysLow-level FFI bindings to the RDMA C-library libucx11,502MITExternal FFI bindings ucx1-sysRust FFI bindings to UCX.5,070MITExternal FFI bindings udUpDate! — A fast, universal dependency updater.93MITCommand line utilitiesDevelopment tools ud-analysisAnalysis passes over loaded binaries: function discovery, type recovery, and signature matching.335MITCommand line utilitiesDevelopment tools ud-arch-6502MOS 6502 instruction decoder for univdreams (Apple I / WozMon scope).309MITCommand line utilitiesDevelopment tools ud-arch-aarch64AArch64 instruction decoder + minimal lifter for univdreams.308MITCommand line utilitiesDevelopment tools ud-arch-bpfLinux eBPF + Solana SBF (sBPFv1 / sBPFv2) instruction decoder + lifter for univdreams.236MITCommand line utilitiesDevelopment tools ud-arch-codecArch-codec trait + open registry: the shared interface every univdreams arch backend implements so the compile/decompile pipeline…348MITCommand line utilitiesDevelopment tools ud-arch-x86x86 (16/32/64-bit) decode + encode backend with byte-identical round-trip.385MITCommand line utilitiesDevelopment tools ud-astAbstract syntax tree for the .ud source language, with canonical pretty-printer.347MITCommand line utilitiesDevelopment tools ud-cliThe `ud` command-line driver for the univdreams suite.170MITCommand line utilitiesDevelopment tools ud-coreCore types shared by the univdreams compiler/decompiler suite.631MITCommand line utilitiesDevelopment tools ud-debugDWARF / PDB / Mach-O dSYM reader; produces typed function signatures and other source-level metadata.310MITCommand line utilitiesDevelopment tools ud-emulatorPure-Rust 32-bit x86 emulator + PE runtime loader + Win32 host shims. Mirrors oxideav-vfw; intended to grow into the…550MITCommand line utilitiesDevelopment tools ud-formatBinary container formats for univdreams — ELF, PE/COFF, Mach-O, and raw flat images. Parse + byte-identical write, one module per…418MITCommand line utilitiesDevelopment tools ud-irShared IR types: functions, basic blocks, control-flow terminators.561MITCommand line utilitiesDevelopment tools ud-signaturesByte-pattern signature database for recognizing well-known functions (CRT helpers, libc primitives, …).381MITCommand line utilitiesDevelopment tools ud-translateThe .ud source-language translation engine: binary → .ud source (decompile) and .ud source → binary (compile), in one crate.270MITCommand line utilitiesDevelopment tools ud-wasmwasm-bindgen wrapper exposing univdreams decompile/compile to a browser playground.178MITCommand line utilitiesDevelopment tools udaSDR blocks/pipeline library1,168MIT uda-connectorA Rust lib to access UDA (unicycling registration software)2,278Apache-2.0 uda-dtoDTOs for UDA-dependent libs and bins2,967Apache-2.0 udataframe_rsA pure Rust library for data frame operations, particularly useful for processing data extracted from PDF files or OCR recognize103MIT OR Apache-2.0Data structuresParsing tools udatatableA library for creating data tables in an embedded no_std environment without an allocator.2,739MIT OR Apache-2.0Data structuresEmbedded development udateA date(time) library that probably won't fit your usecase260BSDDate and timeEmbedded development udbUniversal Data Broker — a Rust gRPC broker over multiple databases (Postgres, MySQL, SQLite, MongoDB, ClickHouse, Cassandra,…321MITDatabase interfacesNetwork programming udbgcross-platform library for binary debugging and memory hacking8,758MIT udbserverProvide Unicorn emulator with a debug server2,392MITEmulators udcUnified Data Clone (UDC) is a cross-platform, high-performance, low-level block I/O data streaming utility designed to emulate…16MIT OR Apache-2.0Command line utilitiesFilesystem udcordundetected discord client for funny things1,533MIT uddf-sdkReading and writing UDDF files2,115GPL-3.0Data structuresEncoding uddsketchImplementation of uddsketch histogram1,715Apache-2.0AlgorithmsData structures udemy_jan24_mypackageOnline store library1,531MIT udemyone_v1_hello_dont_usetesting upload to crates.io1,498MIT udernaModern C++ interface to common platform-specific functionalities2,354MITExternal FFI bindingsOperating systems udevlibudev bindings for Rust5,706,810MIT udev-dllibudev interface that loads functions with dlopen3,006BSL-1.0 udev-xpathMatch udev devices with xpath queries37MIT udeverInteractive udev rule generator for Linux. Stop writing rules by hand.82MITCommand line utilitiesEmbedded development udevrsPure Rust implementation of the user-land udev library14,743LGPL-2.0-or-laterFilesystemOperating systems udfEasily create user defined functions (UDFs) for MariaDB and MySQL.46,964Apache-2.0 OR GPL-2.0-or-later udf-forensicForensic-grade, from-scratch UDF (ECMA-167 / OSTA) reader and tamper analyzer — volume recognition, partition maps…427Apache-2.0FilesystemParser implementations udf-macrosUDF procedural macros implementation45,448Apache-2.0 OR GPL-2.0-or-later udf-sysUDF system bindings39,036Apache-2.0 OR GPL-2.0-or-later udgraphUniversal dependency graphs16,834MIT OR Apache-2.0 udgraph-projectivizeProjectivization/deprojectivization for universal dependency graphs5,461MIT OR Apache-2.0 udi" This experimental library implements the debugger side of the UDI protocol by sending requests, receiving responses and events…2,014MPL-2.0 udictA CLI tool for fetching Urban Dictionary definitions4,039MIT udifcross-platform Apple disk image (aka DMG, UDIF) library1,645MITCompressionEncoding udiffxParse and apply LLM-optimized unified diff + XML file changes1,890MIT OR Apache-2.0Development toolsFilesystem udigestUnambiguously digest structured data110,552MIT OR Apache-2.0AlgorithmsCryptography udigest-deriveProc macro for `udigest` crate108,972MIT OR Apache-2.0 udipta-clapSimplified version of clap for simple CLI1,523MIT OR Apache-2.0 udisA tiny local service discovery system3,942MIT udisksUDisks dbus client for rust1,668MIT udisks2Unofficial crate for interacting with the UDisks2 API38,188LGPL-2.1API bindingsHardware support uditUDIT (urban dictionary it) is a tool to quickly search up words with urban dictionary2,791MIT udledTokenizer and parser4,532MITNo standard libraryParsing tools udled-macrosMacros for audiens1,120MITNo standard libraryParsing tools udled-tokenizersTokenizers for udled4,173MITNo standard libraryParsing tools udm-fanA utility for interacting with the fans on a UDM-Pro over the network1,652GPL-3.0 udmfRust bindings for the OpenHarmony Unified Data Management Framework (UDMF)49Apache-2.0 udmf-sysRaw Bindings to the Unified Data Management Framework (UDMF) of OpenHarmony1,662Apache-2.0