BROWSE A-Z

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.

qairSend/receive files with builtin HTTP server and terminal QR code.10,736MPL-2.0Command line utilities qala-cliCommand-line interface for the Qala programming language50MITCommand line utilitiesCompilers qala-compilerCompiler and bytecode VM for the Qala programming language79MITCompilersParser implementations qalamInterpreter for the Qalam programming language. Qalam is a dead-simple, Urdu inspired, interpreted programming langauge.7,084MITCompilers qalam-ssgSwampy static site generator.268MIT qalculate-rsSafe Rust bindings for Qalculate library39GPL-2.0-onlyAPI bindingsScience qaliQALI: Quick ALIasing in the terminal24,651MIT/Apache-2.0Command line utilities qalqulatorA calculator that uses (and outputs) rational numbers wherever possible.1,561AGPL-3.0-or-laterCommand line utilitiesMathematics qamarket-rsQuantitative Financial Framework3,022MITScience qamd-rsMarket data protocol library for QUANTAXIS968MITFinance qanahA WebRTC-based VPN that uses WireGuard configuration files, secured with ChaCha20-Poly1305 and X25519 key exchange107GPL-2.0-or-laterCommand line utilitiesNetwork programming qanatLock-free channels specially written for asynchronous contexts34Apache-2.0AsynchronousData structures qanglang-cliCLI tool for Qanglang1,328MPL-2.0 qanglang-coreCore library for QangLang1,492MPL-2.0 qanglang-lsLanguage Server for Qanglang906MPL-2.0 qanglang-testTest runner for Qanglang812MPL-2.0 qanikA simple rust implementation of twitter's SnowFlake.755non-standard qansdkhigh-level rust sdk for QANPlatform smart-contracts1,772GPL-3.0-or-later qansdk-macrosproc macros for QANPlatform smart-contracts1,745GPL-3.0-or-later qantsA package to get access to various exchanges and brokers. Build technical analysis statistics.1,847MIT qapiQEMU QMP and Guest Agent API2,283,136MIT qapi-codegenQEMU QAPI codegen helper2,283,373MIT qapi-parserQEMU QAPI JSON specification parser2,274,463MIT qapi-qgaQEMU Guest Agent protocol types120,421MIT qapi-qmpQEMU Machine Protocol types2,280,692MIT qapi-specQEMU QAPI common types2,263,047MIT qapro-rsquantaxis rust version1,605MIT qarenA blazingly fast, secure, offline configuration comparison tool.119MITCommand line utilitiesDevelopment tools qaren-coreCore library for Qaren configuration comparison tool167MIT qargparserArgument parser.10,2830BSD qartencodes images into qr codes2,460non-standard qasEasily manage multiple FLOSS repositories1,641GPL-3.0-or-later qasaPost-quantum cryptography implementation using CRYSTALS-Kyber and CRYSTALS-Dilithium for quantum-safe communications2,361MITAlgorithmsAuthentication qasmA OPENQASM 2.0 Parser8,074MIT qasmfmtOpenQASM 3.0 formatter35MITCommand line utilitiesDevelopment tools qasmsimA QASM interpreter and quantum simulator in Rust6,621MITCommand line utilitiesScience qasrQasr wasm runtime35MIT OR Apache-2.0Development toolsWebAssembly qassOffline password manager2,318MIT qastOpenQASM parser implementation on Rust1,637MIT qastorA tiny bot designed to patrol github projects and publish issues/pending requests on slack.726MIT qatqExact tensor-aware compression for LLM KV caches and runtime migration518Apache-2.0CompressionScience qatrade-rsquantaxis in rust1,619MIT OR Apache-2.0AlgorithmsScience qatrader_rsQuantitative Financial Framework4,281MITScience qatsiStateless secret generation via hierarchical memory-hard key derivation using Argon2id260GPL-3.0-or-laterCommand line utilitiesCryptography qauthClient library for the QuartzAuth API8,410non-standardAPI bindings qaxHigh level declarative Qt6 bindings for Rust.90MIT OR Apache-2.0API bindingsGUI qax-buildBuild-script helper for qax: compile Qt .ts translations and .qrc resources during cargo build, plus tr!() extraction for…35MIT OR Apache-2.0Development tools::Build UtilsGUI qax-sysLow-level FFI glue for high-level Qt6 Rust bindings130MIT OR Apache-2.0 qbEMACS for Kubernetes — a powerful, extensible terminal UI for managing Kubernetes clusters925MIT qb-apiqBittorrent web api implementation.1,105MIT qb-savepath-history-editorSmall GUI tool to reorder/edit qBittorrent save path history (save_path_history)64MIT OR Apache-2.0 qbakA single-command backup helper for Linux and POSIX systems6,159MITCommand line utilitiesFilesystem qbangthe closest letter to !1,534Apache-2.0 qbarthe rational proof assistant1,624non-standard qbaseCore structure of the QUIC protocol, a part of dquic8,877Apache-2.0AsynchronousNetwork programming qbclCore data types for the Qubicle (.qb / .qbt / .qbcl) file formats.77non-standardData structuresGame development qbcl-codecReads and writes Qubicle (.qb / .qbt / .qbcl) files.66non-standardEncodingGame development qbdi-sysQBDI library rust binding (use rust bindgen)3,903MIT qbeQBE IR for Rust20,424MIT OR Apache-2.0Compilers qbe-parserA parser for QBE IR50Apache-2.0 OR MITCompilersParser implementations qbelsA simple tree-sitter based lsp implementation for Quick Backend (QBE) IR456MIT qbeyA type-safe SQL query builder for Rust412MITDatabase interfaces qbey-mysqlMySQL dialect extension for the qbey SQL query builder110MITDatabase interfaces qbfrtCommand line tool for working with qBittorrent's fastresume data3,077MITCommand line utilities qbiceThe Query-Based Incremental Computation Engine856MITAsynchronousCaching qbice_deriveThe Query-Based Incremental Computation Engine415MIT qbice_identifiable_deriveThe Query-Based Incremental Computation Engine667MIT qbice_identifiable_derive_libThe Query-Based Incremental Computation Engine848MIT qbice_serializeThe Query-Based Incremental Computation Engine758MIT qbice_serialize_deriveDerive macros for qbice_serialize Encode and Decode traits766MIT qbice_stable_hashThe Query-Based Incremental Computation Engine723MIT qbice_stable_hash_deriveThe Query-Based Incremental Computation Engine804MIT qbice_stable_type_idThe Query-Based Incremental Computation Engine640MIT qbice_storageThe Query-Based Incremental Computation Engine761MIT qbinEncoding and decoding geographical coordinates to and from Quadbin, a hierarchical geospatial indexing system for square cells in…1,176MITScience::Geospatial qbitA wrapper for qBittorrent Web API2,081MITAPI bindings qbit-api-rsA asynchronous Rust wrapper for qBittorrent Web API4,537MIT OR Apache-2.0API bindingsAsynchronous qbit-rsA Rust library for interacting with qBittorrent's Web API1,565,813MITNetwork programming qbittorrentqbittorrent web api implementation4,559MIT qbittorrent-clientqBittorrent webAPI wrapper library3,608GPL-3.0-only qbittorrent-metrics-exporterA Prometheus exporter for qBittorrent that provides detailed torrent metrics with support for categories and tags. Collects both…3,653GPL-3.0 qbittorrent-metrics-exporter-entityDatabase entities for qbittorrent-metrics-exporter.1,554GPL-3.0 qbittorrent-metrics-exporter-migrationDatabase migrations for the qBittorrent Prometheus exporter.1,554GPL-3.0 qbittorrent-rsQbittorrent API SDK for Rust2,170GPL-3.0 qbittorrent-web-apiGenerated web api for qBittorrent23,115MIT qbittorrent-web-api-genGenerated web api for qBittorrent26,784MIT qbittorrent_apiAsync qBittorrent API client for v4.1 through v5.0+7,443AGPL-3.0-only qbittorrent_rustAn asynchronous library to interface with the qbittorrent WeBUI API3,514MITAPI bindingsAsynchronous qbittpqBittorrent web api implementation.1,115MIT qbixRandom access to BAM records by read name using a compact .qbi index105MITCommand line utilitiesScience qbjs_deserializerThis crate attempts to deserialize files serialized in Qt5's internal binary JSON format to a serde_json value.6,400MITEncoding qblasqblas497non-standard qbrshA fast, keyboard-driven web browser58MIT OR Apache-2.0 qbsdiffFast and memory saving bsdiff 4.x compatible delta compressor and patcher.251,550MIT qbsdiff_test_bench_utilsprivate utilities of the qbsdiff crate for tests and benchmarks7,018MIT qbspRust crate for parsing and operating with Quake 1, 2, and GoldSrc BSP files10,200MIT OR Apache-2.0Game development qbsp_macrosRust crate for parsing and operating with Quake 1, 2, and GoldSrc BSP files10,530MIT OR Apache-2.0 qbtA cli to manage qBittorrent.2,991GPL-3.0 qbt-cleanAutomated rules-based cleaning of qBittorrent torrents.7,034Apache-2.0 qbttQuinn's Basic TOML Tests for Rust is a very simple way to run and check tests right from the command line, with support for…2,320MIT qbtuiA terminal user interface for qBittorrent6,121MITCommand line utilities qbutton-piService to send Google Assistant commands in response to 433 MHz RF codes.1,952Apache-2.0Network programming qcAn enhanced RPN cli tool for quick binary, octal, decimal, hexadecimal calcs.6,340CC0-1.0 qc-cliqc is designed to give you an instant breakdown of your codebase composition using Mmap and Parallel Directory Walking.198GPL-3.0-or-laterCommand line utilities qc_file_parsersA crate providing libraries for parsing file formats used in computation chemistry.8,932MIT qcallibq/qcal29MIT qcalcqcalc is a simple but effective terminal calculator for quick access and ease of use. It supports history of expressions,…41,415MITFinanceMathematics QCardQWERTYCards for the everyman developer.803GPL-3.0-only qcdQuickly change directory on the command line2,940MIT OR Apache-2.0Command line utilities qcd-smenumerical library for the screened massive expansion of QCD1,824GPL-3.0-or-laterMathematicsScience qcellStatically-checked alternatives to RefCell and RwLock406,771MIT/Apache-2.0Data structuresMemory management qcellsA Rust Q.HOME+ESS - QCELLS API client.2,701Apache-2.0 qcertA tool for generating test key/certificate pairs9530BSDCryptography qcgpuOpen Source, High Performance & Hardware Accelerated, Quantum Computer Simulation in Rust2,310MIT qcheckAutomatic property based testing with shrinking.45,224Unlicense OR MITDevelopment tools::Testing qcheck-macrosA macro attribute for quickcheck.26,813Unlicense OR MIT qchessAn incredibly rudimentary chess engine1,688MIT qchullProvides quick convex hull algorithm629non-standardSimulation qcicadaSDK for the QCicada QRNG (Crypta Labs) — macOS-first, works on Linux too1,594MITCryptographyHardware support qclA Query Check Language written in Rust2,433Apache-2.0 qcloudA CLI to operate Tencent cloud object storage12,949MITCommand line utilities qcmslightweight color management2,259,529MITGraphics qcoinA quantum-based binary choice maker that performs coin tosses using quantum random number generators1,099MIT qcoin-consensusConsensus algorithm and block validation for qcoin blockchain548BSD-3-Clause qcoin-cryptoCryptographic primitives for qcoin711BSD-3-Clause qcoin-ledgerBlockchain state management and UTXO tracking for qcoin594BSD-3-Clause qcoin-nodeFull node implementation and network protocol for qcoin blockchain27BSD-3-ClauseCryptographyNetwork programming qcoin-scriptScripting engine and transaction validation for qcoin blockchain632BSD-3-Clause qcoin-typesCore types and data structures for qcoin674BSD-3-Clause qcollectCollections; Collection-Traits.9,337CC0-1.0 qcollect-traitsTraits for being generic over collection-types.29,644CC0-1.0 qcomm-corePost-quantum cryptographic primitives: ML-KEM-1024, SPHINCS+, Triple Ratchet with forward secrecy30MIT OR Apache-2.0CryptographyNo standard library qcommsqcomms is a small library that offers a simple, zero-cost message passing trait. no async-trait.6,387MPL-2.0 qcongestionCongestion control in QUIC, a part of dquic7,127Apache-2.0AsynchronousNetwork programming qconnectionEncapsulation of QUIC connections, a part of dquic7,012Apache-2.0AsynchronousNetwork programming qcontextOne-time initializable static state with statically-checked zero-cost interior mutability5,877MIT qcontext-deriveDerives for qcontext6,247MIT qcosProvide basic interface encapsulation of Tencent Cloud Object Storage (cos)21,952MIT qcowA library for working with QEMU qcow images5,501MIT qcow-cliA CLI for working with qemu qcow files5,297MIT qcow2Reading qcow2 virtual disk images8,943MIT qcow2-corePure-Rust read-only QCOW2 (QEMU Copy-On-Write v2/v3) disk image reader2,066Apache-2.0FilesystemParser implementations qcow2-forensicForensic anomaly auditor for QCOW2 images — backing files, encryption, internal snapshots, dirty/corrupt feature bits as graded…67Apache-2.0FilesystemParser implementations qcow2-fuseMounting qcow2 virtual disk images4,783MIT qcow2-rsA library for read/write qcow2 image in async/await29,123MIT OR Apache-2.0AsynchronousFilesystem qcpSecure remote file copy utility which uses the QUIC protocol over UDP11,371AGPL-3.0-or-laterCommand line utilities qcp-edgeQCP envelope verification: Ed25519 + ML-DSA-65 hybrid post-quantum attestation. WASM-compatible, no_std, deterministic. The…27AGPL-3.0-or-laterCryptographyNo standard library qcraftUniversal, extensible query builder for SQL databases391MIT OR Apache-2.0Database interfaces qcraft-coreCore AST types and renderer trait for qcraft681MIT OR Apache-2.0Database interfaces qcraft-postgresPostgreSQL renderer for qcraft509MIT OR Apache-2.0Database interfaces qcraft-sqliteSQLite renderer for qcraft513MIT OR Apache-2.0Database interfaces qcryptoLibrary for the design, simulation and validation of quantum cryptographic protocols219MIT OR Apache-2.0CryptographyScience qcryptoolCLI simulator for quantum cryptography protocols.43MITCommand line utilitiesCryptography qcsHigh level interface for running Quil on a QPU439,784Apache-2.0API bindingsCompilers qcs-apiAuto-generated bindings to the QCS OpenAPI63,104Apache-2.0API bindings qcs-api-client-commonCommon code for QCS API clients219,791Apache-2.0API bindingsAuthentication qcs-api-client-grpcgRPC client for the QCS API222,480Apache-2.0API bindingsAuthentication qcs-api-client-openapiAuto-generated bindings to the QCS OpenAPI262,214Apache-2.0API bindings qcs-dependencies-clientKnown-compatible versions of gRPC, OpenAPI, OTel, and reqwest crates for QCS client development17,094Apache-2.0 qcs-sdk-pythonPython bindings to qcs-sdk-rust550Apache-2.0API bindingsCompilers qcsimqcsim - WIP2,157MIT qcvA JSON-based resume generator4,799MITCommand line utilities qcvmA QuakeC runtime designed to be embedded398GPL-2.0 qdExtended precision floating point arithmetic2,433,307MIT qdatagramDatagram transmission of dquic1,537Apache-2.0AsynchronousNetwork programming qdbLibrary for interacting with QDB11,639MIT OR Apache-2.0 qdb-rsQuantum Database with vector store, MPS compression, Grover search, and fault-tolerant storage52MIT OR Apache-2.0AlgorithmsData structures qdb-storageStorage use in QDB1,242MIT qdftConstant-Q Sliding DFT1,738MITAlgorithmsMathematics qdhexSimple helper functions to create hex dumps2,579non-standardDevelopment tools qdirA quick directory generator4,945non-standardCommand line utilities qdk_sim_experimentalExperimental simulators for use with the Quantum Development Kit.67,888MIT qdk_sim_rsRust-based simulators for use with the Quantum Development Kit.53,324MIT qdowncastAn alternative to chris-morgan's mopa (My-Own-Personal-Any).4,531CC0-1.0 qdplotTool to perform quick plots936MIT qdrantQdrant is a vector similarity search engine.2,999Apache-2.0 qdrant-clientRust client for Qdrant Vector Search Engine3,133,990Apache-2.0API bindingsDatabase interfaces qdrant-datafusionQdrant integration for Apache DataFusion718Apache-2.0Database interfaces qdrant-edgeA lightweight, in-process vector search engine designed for embedded devices, autonomous systems, and mobile agents.2,814Apache-2.0Database implementations qdrant-rust-stemmersA rust implementation of some popular snowball stemming algorithms68,727MIT/BSD-3-Clause qdrant_rest_clientThe Qdrant SDK for WebAssembly.20,556Apache-2.0 qdsqds-0.1.13,238Unlicense qdsaThe qDSA digital signature algorithm plus X25519 and Elligator2.9,128BSD-3-ClauseCryptography qdum-vaultQuantum-resistant vault CLI for Solana using SPHINCS+ post-quantum signatures896MITCommand line utilitiesCryptography qeAd-hoc one-off script manager4,947non-standard qecpQuantum Error Correction Playground for Surface Code Research18,645MITScience qecsSoon to be highly flexible Entity-Component-System framework, core lib.23,355CC0-1.0 qecs-coreSoon to be highly flexible Entity-Component-System framework, core lib.29,642CC0-1.0 qedCompile-time assertions78,728MITNo standard libraryNo standard library::No dynamic allocation qedaThe tool for easy creating electronic component libraries3,148MIT qedgarlibq/qedgar25MIT qedlQualcomm EDL SDK - Sahara + Firehose flashing engine80MIT qedl-cliCLI tool for Qualcomm EDL 9008 mode flashing49MIT qedl-coreCore types and error definitions for QEDL249MITEmbedded developmentHardware support qedl-firehoseQualcomm Firehose XML command engine154MIT qedl-imageRawprogram/patch XML parsing and sparse image expansion99MIT qedl-jobJob orchestration for flash, dump, erase, and info operations121MIT qedl-saharaQualcomm Sahara handshake protocol implementation157MIT qedl-storageGPT parsing and partition operations for Qualcomm EDL131MIT qedl-transportUSB/serial transport abstraction for Qualcomm EDL communication227MIT