All 305,250 crates, alphabetically

parco-cn-langParco Case Number Language24MIT parco-discordParco Discord24MIT parco-geocodioParco Geocoding63MIT parco-lobParco Lob38MIT parco-multipartParco Multipart75MIT parco-projParco Proj29MIT parco-strParco Str22MIT parco-ws-securityParco Web Services Security173MIT parco-xmlParco XML333MIT parco-xml-macrosParco XML Macros423MIT parcodeA high-performance, lazy load and parallelized caching library for complex Rust data structures.174MITConcurrencyData structures parcode-deriveProcedural macros for the Parcode high-performance serialization library.343MITDevelopment tools::Procedural macro helpersEncoding parcollCollections for parallel computing, such as SPSC, SPMC, and MPSC and MPMC queues.1,853MITConcurrencyData structures parcopyParallel, atomic, and safe file/directory copying for Rust51,049MIT OR Apache-2.0ConcurrencyFilesystem parcopy-cliFast parallel file copy command (pcp)138MIT OR Apache-2.0Command line utilitiesFilesystem parcosminimal parser combinator library6,158MIT parcoursParser Combinators for Unique Results3,988MITParsing tools pardalotus_chaserKeep up to date with scholarly metadata indexed in Crossref.964MIT pardalotus_snapshot_toolTools to work with scholarly metadata snapshots from DataCite and Crossref.859Apache-2.0 pardisoThe package provides wrappers for PARDISO.1,919Apache-2.0/MITAPI bindingsScience pardiso-srcThe package provides a PARDISO source.2,550Apache-2.0/MITExternal FFI bindingsScience pardiso-sysThe package provides bindings to PARDISO.4,151Apache-2.0/MITExternal FFI bindingsScience pardiso-wrapperWrappers for MKL and Panua Pardiso dynamic libraries4,328Apache-2.0MathematicsScience pardon_danceHigh-quality integration for…23MIT parePareto frontier and skyline queries14,705MIT OR Apache-2.0AlgorithmsMathematics parecodeA terminal coding agent built for token efficiency and local model reliability43MITCommand line utilitiesDevelopment tools paredProjected reference counted pointers10,485MIT OR Apache-2.0Data structuresMemory management pareenA small library for parameterized inbetweening19,083MIT paregRust library with useful tools for command line argument parsing15,374non-standard pareg_coreThis library contains the implementation for the pareg library.15,248non-standard pareg_procThis library contains proc macros for the pareg library.14,818non-standard pareidoliaA facial recognition login service for Linux.948MIT OR Apache-2.0 parelTool to run linux commands in parallel1,594MIT parenchymaA high-performance computing (HPC) framework8,375MIT/Apache-2.0Science parent_ai_json_engineCrate provides a JSON engine for collecting, aggregating, and managing models.42MIT parenthesized_cA library that allows to parse `(C)` attribute tokens in `#[repr(C)]`2,435MIT OR Apache-2.0Development tools::Procedural macro helpers parentreeA tree data structure that can access each node's parents or something. TODO change description1,501MIT parenvEnvironment variable parser with a clap style derive macro and elm style error reporting.7,146MIT parenv-deriveMacro implementation of #[derive(Environment)]7,424MIT Pares-Sensei-say-helloThis is say hello library1,909MIT paresseParser generators for lazy people1,015non-standard paretoPareto Principle (80/20 rule) analysis CLI - convenience wrapper for lawkit pareto876MITCommand line utilitiesScience pareto-rsPareto analysis helpers for tokenledger38MIT pareto_frontBuilds a Pareto front incrementaly.6,423Apache-2.0AlgorithmsData structures ParetoRsPareto-optimal cost engine for AI coding agents78MIT parexBlazing-fast parallel search engine — generic, embeddable, zero opinions205MITConcurrencyFilesystem parfaitMost lightweight and easy to use web framework.3,368Apache-2.0AsynchronousNetwork programming parfait-gfagfa v1/v2 parser and validator336MITParser implementationsScience::Bioinformatics parfillAlias for parfit — paragraph fit, a codebase-aware comment reflow tool. Installs a parfill binary with identical behaviour. See…20MITCommand line utilitiesText processing parfitParagraph fit — a codebase-aware comment reflow tool that wraps prose with optimal-fit line breaking and leaves directives alone.…196MITCommand line utilitiesText processing parfo_openapiparfo support for openapi3,396Apache-2.0 pargenA parser generator using ANTLR grammar syntax, outputting to Rust, Go, TypeScript, Python, Java, C, C++, and Tree-sitter35Apache-2.0 pargitGit workflow utility32,319MIT pargoprivate cargo crates registry1,672MIT AND Apache-2.0 pargraphOperator based parallel graph processing.8,685GPL-3.0-or-laterConcurrency pargscommand line argument parser9,734GPL-3.0 parisA simple logger for your CLI apps or other things you want in the terminal868,110MPL-2.0Command-line interfaceCommand line utilities paris-locateA crate to add function name to paris's formatting output2,412MPL-2.0Command-line interfaceCommand line utilities paris-logA crate that allows you to use paris's formatting with the log crate.79,461MIT pariteaA soon to be toolbox for FTQC researchers and communities.23non-standard pariterParallel iterator processing232,174MPL-2.0 OR MIT OR Apache-2.0 parityProvides is_even and is_odd methods for primitive numeric types2,930CC0-1.0Mathematics parity-bip39Library for BIP-39 Bitcoin mnemonic codes5,183,496CC0-1.0 parity-bnPairing cryptography with the Barreto-Naehrig curve5,474MIT OR Apache-2.0 parity-bytesbyte utilities for Parity3,629,608MIT/Apache-2.0 parity-codecLightweight, efficient, binary serialization and deserialization codec398,782Apache-2.0Encoding parity-codec-deriveSerialization and deserialization derive macro for Parity Codec167,848Apache-2.0 parity-cryptoCrypto utils used by ethstore and network.843,320MIT OR Apache-2.0 parity-daemonizeA more advanced daemonizer81,956GPL-3.0Operating systems::Unix APIs parity-dapps-glueBase Package for all Parity built-in dapps80,444GPL-3.0 parity-dbKey-value database for the blockchain9,289,092MIT OR Apache-2.0 parity-hashA collection of fixed-size byte array representations22,612MIT parity-mapFor mapping integers based on their parity3,491MIT parity-multiaddrImplementation of the multiaddr format2,287,745MIT parity-multihashImplementation of the multihash format645,762MIT parity-pathPath utilities142,793MIT/Apache-2.0 parity-plonkA pure-Rust implementation of the PLONK ZK-Proof algorithm5,301MPL-2.0AlgorithmsCryptography parity-prdocprdoc is a tool for structured pull request annotation, useful for rich changelog generation1,648MIT parity-publishA tool to manage publishing Parity's crates167,724Apache-2.0 parity-publish-semver-checksLight wrapper around cargo-semver-checks to shield from gix feature bleed1,245Apache-2.0 parity-rocksdbA Rust wrapper for Facebook's RocksDB embeddable database.150,606Apache-2.0 parity-rocksdb-sysNative bindings to librocksdb163,593MIT/Apache-2.0/BSD-3-Clause parity-runtimeTokio runtime wrapper18,487GPL-3.0 parity-scale-codecSCALE - Simple Concatenating Aggregated Little Endians53,148,779Apache-2.0Encoding parity-scale-codec-deriveSerialization and deserialization derive macro for Parity SCALE Codec51,548,368Apache-2.0 parity-secp256k1Fork of Rust bindings for Pieter Wuille's `libsecp256k1` library. Implements ECDSA for the SECG elliptic curve group secp256k1…538,639CC0-1.0 parity-send-wrapperThis Rust library implements a wrapper type called SendWrapper which allows you to move around non-Send types between threads, as…4,476,901MIT/Apache-2.0Rust patterns parity-smoldotPrimitives to build a client for Substrate-based blockchains4,993GPL-3.0-or-later WITH Classpath-exception-2.0 parity-smoldot-full-nodeSubstrate/Polkadot full node using smoldot19GPL-3.0-or-later WITH Classpath-exception-2.0 parity-smoldot-lightBrowser bindings to a light client for Substrate-based blockchains4,886GPL-3.0-or-later WITH Classpath-exception-2.0 parity-snappyRust bindings for the snappy compression library108,670GPL-3.0 parity-snappy-sysNative bindings to libsnappy192,735GPL-3.0 parity-subtlePure-Rust traits and utilities for constant-time cryptographic implementations.3,178BSD-3-ClauseCryptographyNo standard library parity-tokio-ipcInterprocess communication library for tokio.5,569,896MIT OR Apache-2.0 parity-util-memCollection of memory related utilities5,765,611MIT OR Apache-2.0 parity-util-mem-deriveCrate for memory reporting4,939,134MIT parity-wasmWebAssembly low-level format library16,219,917MIT/Apache-2.0Parser implementationsWebAssembly parity-wasm-cpWebAssembly binary format serialization/deserialization/interpreter10,430MIT/Apache-2.0Parser implementationsWebAssembly parity-wordlistWord list used to generate brain wallets for Parity.248,866GPL-3.0 parity-wsLightweight, event-driven WebSockets for Rust.2,075,201MIT parity_clippy_utilsfork of clippy_utils for ink2,423MIT OR Apache-2.0 parity_rand_xorshiftXorshift random number generator1,997MIT OR Apache-2.0AlgorithmsNo standard library paritydb-ffiC FFI bindings for ParityDB - high-performance key-value storage24MIT OR Apache-2.0API bindingsDatabase interfaces parkCommand cli for convert toml to docker env_file format1,929MIT park-miller-carta-prngAn efficient Pseudo-Random Number Generator5,196MIT parkaa small and cozy js runtime1,570MPL-2.0 parkerMinimalist web framework for templatized rendering1,849GPL-3.0-or-later parker_codegenCode generation for the Parker web framework2,076GPL-3.0-or-later parkingThread parking and unparking282,085,035Apache-2.0 OR MITConcurrency parking-gameA recreation of the rules set for Thinkfun's "Rush Hour"1,201EUPL-1.2 parking_lotMore compact and efficient implementations of the standard synchronization primitives.939,525,663MIT OR Apache-2.0Concurrency parking_lot_coreAn advanced API for creating custom synchronization primitives.965,778,311MIT OR Apache-2.0Concurrency parking_lot_mpscA port of the Rust std::sync::mpsc module, using the parking_lot concurrency types rather than those in the standard library.10,527Apache-2.0/MIT parking_lot_rtParking-lot fork for real-time applications20,181MIT OR Apache-2.0Concurrency parking_methodObtain parking_lot locks by policy objects5,726MIT OR Apache-2.0 parking_monitorParking-lot-flavored monitor synchronization construct3,009MITConcurrency parkourA fast, extensible command-line arguments parser1,640MIT OR Apache-2.0Command-line interface parkour_deriveDerive macros for parkour2,417MIT OR Apache-2.0Command-line interface parkrightWrapper around Parkright Settlement API2,629MIT parkrustParkrun API wrapper1,558MIT OR Apache-2.0API bindings parkrust_deriveproc macros package for parkrust2,139MIT OR Apache-2.0 parlanceFundamental text property types774,438Apache-2.0 OR MITGraphics parlando-serverReusable Rust server runtime for Parlando dialogue-game experiments.59MITWeb programming::HTTP server parlayA Toolkit for Programming Parallel Algorithms on Shared-Memory Multicore Machines23MIT OR Apache-2.0AlgorithmsConcurrency parlbandGaze at constellations of stars in the terminal void960GPL-3.0-onlyCommand line utilities parle[WIP] SAX Style Parser1,461GPL-3.0-or-later parlexCore support library for parsers and lexers generated by parlex-gen.4,212MITCompilersParsing tools parlex-calcParlex example: simple calculator489MITCompilersParsing tools parlex-genLexer generator ALEX and parser generator ASLR3,784MITCompilersParsing tools parleyParley provides an API for implementing rich text layout.1,936,665Apache-2.0 OR MITGraphicsGUI parley-cliTerminal-first review tool for AI-generated code changes92Apache-2.0 parley-coreCore types, signing, and proof-of-work primitives for the Parley agent-to-agent messaging protocol.157MIT OR Apache-2.0CryptographyData structures parley-mdReference CLI for the Parley agent-to-agent messaging protocol. Installs the `parley` binary.77MIT OR Apache-2.0Command line utilitiesCryptography parley-mlsAgent-side MLS (RFC 9420) wrappers for the Parley messaging protocol — KeyPackages, group lifecycle, encrypt/decrypt for private…118MIT OR Apache-2.0CryptographyNetwork programming parley_dataUnicode data for Parley817,949Apache-2.0 OR MITGraphicsGUI parley_engineLow-level text analysis pipeline12MIT OR Apache-2.0 parley_ratatuiRender Ratatui buffers through Parley and Vello into WGPU textures.4,129MIT OR Apache-2.0Command-line interfaceGUI parley_termReusable Parley/Vello terminal scene builder extracted from CuTTY20Apache-2.0 parliamentProtocols, traits, and domain logic for graceful governance.496AGPL-3.0-onlyAPI bindingsAsynchronous parlibA barebones parser combinator library, inspired by Haskells parsec1,312MIT parlovHTTP oracle detection tool — systematic probing for RFC-compliant information leakage.133MIT OR Apache-2.0Command line utilitiesDevelopment tools::Testing parlov-analysisAnalysis engine trait and signal detection for parlov.190MIT OR Apache-2.0Web programming parlov-coreShared types, error types, and oracle class definitions for parlov.410MIT OR Apache-2.0Web programming parlov-elicitElicitation engine: strategy selection and probe plan generation for parlov.210MIT OR Apache-2.0Web programming parlov-outputOutput formatters for parlov: SARIF, terminal table, and raw JSON.211MIT OR Apache-2.0Development tools::Debugging parlov-probeProbe engine trait and HTTP execution layer for parlov.192MIT OR Apache-2.0Web programming::HTTP client parmaclA command line text parser. Parses a full command line string which has not already been pre-parsed into arguments by a shell.1,588ISCCommand-line interface parmapNo description provided.2,972 parmesanPARMESAN: Parallel ARithMEticS over ENcrypted data.11,602AGPL-3.0CryptographyMathematics parmesan-par2Fast, standalone PAR2 (Reed-Solomon) creation, verification and repair tool165MITCommand line utilitiesEncoding paro-rsAn opinionated way to develop tauri desktop applications where you do not write any client code (no javascript, no webassembly)…9,405MIT OR Apache-2.0GUI parodyFile-based HTTP mock library4,261non-standard parolLL(k) and LALR(1) parser generator for Rust371,882MIT/Apache-2.0AlgorithmsParsing tools parol-lsLanguage server for parol parser generator52,902MIT OR Apache-2.0AlgorithmsParsing tools parol-macrosMacros for LL(k) parser generator `parol`264,027MIT OR Apache-2.0AlgorithmsParsing tools parol_runtimeRuntime library for parsers generated by the 'parol' parser generator.337,564MIT OR Apache-2.0AlgorithmsParsing tools parosLearning the Paxos consensus algorithm by implementing it in Rust37Apache-2.0AlgorithmsNetwork programming parotPlaceholder for the upcoming parot library — fast text search, pattern matching, and duplicate detection in Rust with Python and…17Elastic-2.0Text processing parot-corePlaceholder for the upcoming parot library — fast text search, pattern matching, and duplicate detection in Rust with Python and…15Elastic-2.0Text processing parpulse-clientClient application for Parpulse OLAP database I/O cache service10,358non-standard parqA blazingly-fast tool for exploring and analyzing Apache Parquet file: inspect schema, view statistics, browse data, and dissect…125Apache-2.0Command line utilitiesDevelopment tools parqbenchA utility for viewing parquet files built on egui.4,938GPL-3.0-or-later parqcatA lightweight Unix-style CLI for inspecting Parquet files.45Apache-2.0Command line utilities parqeyeParquet viewer for the command line1,253MIT parqforge-cliParqForge command-line toolkit for Parquet files and datasets11Apache-2.0 parqforge-coreCore library for reading and previewing Parquet files and Hive-partitioned datasets14Apache-2.0 parquetApache Parquet implementation in Rust65,081,404Apache-2.0 parquet-catA command-line tool to explore Parquet files on S3, with folder support2,542MIT parquet-flamegraphA simple program to generate flamegraph and investigate parquet storage1,723MIT parquet-formatApache Parquet Format - thrift definition and generated Rust file2,280,257Apache-2.0 parquet-format-async-tempTemporary crate containing thrift library + parquet definitions compiled to support read+write async.638,917Apache-2.0 parquet-format-safeSafe Parquet and Thrift reader and writer (sync and async)7,550,718MIT/Apache-2.0 parquet-geospatialApache Parquet Geometry and Geography implementation in Rust12,725Apache-2.0 parquet-key-managementImplements the Parquet Key Management Tools API in Rust to enable integration with a Key Management Server when using Parquet…2,529Apache-2.0 parquet-linterLint and optimize Parquet files for better performance135MIT parquet-linter-cliCLI tool to lint and optimize Parquet files69MIT parquet-liteA lightweight, pure-Rust alternative to the official Apache Parquet crate — minimal dependencies, small binary size,…28Apache-2.0EncodingParser implementations parquet-lruImplement LRU cache reader for parquet::arrow::async_reader::AsyncFileReader.3,420Apache-2.0 parquet-pyA simple command-line interface & Python API for parquet2,199non-standard parquet-recordHigh-performance Rust library for moving structs to/from disk using Parquet format. Abstracts complex Arrow/Parquet usage while…121MIT parquet-variantApache Parquet Variant implementation in Rust803,157Apache-2.0 parquet-variant-computeApache Parquet Variant Batch Processing796,680Apache-2.0 parquet-variant-jsonApache Parquet Variant to/from JSON797,190Apache-2.0 parquet-viewerA simple command-line tool to view Apache Parquet files.1,166MITCommand line utilities parquet2Safe implementation of parquet IO.6,154,509Apache-2.0 parquet2arrowA command-line (CLI) tool to convert a Parquet file to an Apache Arrow file1,599Apache-2.0 parquet2jsonA command-line tool for streaming Parquet as line-delimited JSON27,450MIT parquet2lanceConvert parquet files to lance32,976non-standard parquet_aramidQuery engine using Parquet tables as a Key-Value store4,605GPL-3.0-or-laterDatabase implementations parquet_deriveDerive macros for the Rust implementation of Apache Parquet2,432,095Apache-2.0 parquet_opendalparquet Integration for Apache OpenDAL19,803Apache-2.0 parquet_to_excela crate to convert parquet file(s) to an/a excel/csv file with constant memory in rust6,617MIT parquetryRuntime library for Parquet code generator18,658non-standard parquetry-genParquet code generator18,353non-standard parquetry-sortRuntime sorting library for Parquet code generator13,240non-standard parquetteView and search through parquet files24non-standard parrotGeometry utilities with a focus on operations on polygons.2,625MIT/Apache-2.0 parrot-networkExperimental public Distributed Ledger Technology (DLT)20,976MITNetwork programmingRust patterns parrot-rngA lightweight, strictly deterministic procedural generation library for Rust456MIT OR Apache-2.0 OR GPL-3.0-only OR LGPL-3.0-onlyAlgorithmsGame development parrot-snapA colorful and chatty CLI snapshot testing tool4,406MITCommand line utilitiesDevelopment tools