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.
qni-core-rsqni core library15,383LGPL-3.0
qnicornRust bindings for the Qnicorn emulator with utility functions1,628GPL-2.0
qnipQiniu IP Query library for Rust1,539MIT
qnoteA fast, lightweight terminal-based note-taking application752MIT
qnsiOfficial Rust SDK for the QNSI Quantum-Native Security Infrastructure — post-quantum cryptography (ML-KEM, ML-DSA, SLH-DSA,…19Apache-2.0
qntzVector quantization1,296MIT OR Apache-2.0
qnxscreenHigh-level wrapper for the QNX libscreen.so library.17MIT or Apache-2.0
qnxscreen-sysLow-level wrapper for the QNX libscreen.so library.45MIT or Apache-2.0
qoVery cool project is currently WIP! Contact me if you want to use the name.1,647MIT
qo_toolsutilities for working with "Quite Ok _" formats from Phobos Labs.1,509non-standard
qoaudioQOA audio format decoder in Rust14,340MIT OR Apache-2.0
qobuzQobuz API lirary1,721GPL-2.0-only
qobuz-apiA Rust client library for the Qobuz music streaming API88GPL-3.0-or-later
qobuz-cliQobuz CLI client44GPL-2.0-only
qodecReserved name for an upcoming Microsoft QDK error-correction crate. Not yet implemented.18MIT
qodeinereserved name1,754MIT
qoeurreserved name1,787MIT
qogAn extremely simple log library.8,514non-standard
qoiVERY fast encoder/decoder for QOI (Quite Okay Image) format54,110,557MIT/Apache-2.0
qoi-fastFast encoder/decoder for QOI (Quite Okay Image) format (WIP)1,163MIT
qoi_rsRust port of the Quite Okay Image format3,596MIT
qoiconvA QOI converter1,573LGPL-2.0-or-later
qoiconv-rsConvert between different image formats and qoi format.1,531MIT
qoicoubehVERY fast encoder/decoder for QOI (Quite Okay Image) format61,045MIT/Apache-2.0
qolQuality Of Life functions and macros2,999MIT
qollageVisualization tool for qoqo quantum computing toolkit by HQS Quantum Simulations10,821Apache-2.0
qolrusA suite of random but useful functions that are aimed at giving you 'piece of cake' level comfortability.1,468MIT
qomoA quantum computing toolkit for learning and visualization.9,480MIT
qonductorRust implementation of the Qobuz Connect protocol6,041MIT
qonduitA Rust implementation of the CQRS pattern.1,161MIT
qonfucius-sso-utilityA Rust implementation of Qonfucius SSO for resource servers6,233MIT
qontinui-runner-clientTyped HTTP client for the qontinui-runner /spawn-placement endpoints. Layered on qontinui-types::wire.61Apache-2.0
qontinui-typesCanonical DTO types for Qontinui. Rust is the source of truth; TypeScript and Python are generated from JSON Schema emitted by…210Apache-2.0
qooquery builder library. Query Object Oriented.5,782MIT
qookqook - Pure Rust unitaryfund/qrack Wrapper19,895MIT
qoolA simple CLI file sharing tool between PC and phone via QR code.1,655MIT AND CC-BY-4.0
qoollo-log4rs-logstashLogstash appender for log4rs7,007MIT
qoollo-logstash-rsLogstash sender8,964MIT
qopA simple and powerful database migration tool.9,761MIT
qoptA simple optimization library.55,398MIT
qoqoQuantum computing circuit toolkit. Python interface of roqoqo182,626Apache-2.0
qoqo-aqtAQT backend for qoqo quantum computing toolkit17,046Apache-2.0
qoqo-iqmIQM backend for qoqo quantum computing toolkit15,290Apache-2.0
qoqo-macrosMacros for the qoqo crate180,938Apache-2.0
qoqo-qrydQRyd backend for qoqo quantum computing toolkit57,015Apache-2.0
qoqo-questQuEST simulator backend for qoqo quantum computing toolkit58,940Apache-2.0
qoqo_calculatorqoqo-calculator is the calculator backend of the qoqo quantum computing toolkit by HQS Quantum Simulations251,921Apache-2.0
qoqo_calculator_pyo3Python interface to qoqo calculator, the calculator backend of the qoqo quantum computing toolkit by HQS Quantum Simulations199,826Apache-2.0
qoqo_for_braket_devicesAWS's Braket devices interface for qoqo python quantum computing toolkit22,989Apache-2.0
qoqo_qasmPython interface of roqoqo_qasm by HQS Quantum Simulations39,243Apache-2.0
qoqo_qirQIR interface for roqoqo Rust quantum computing toolkit by HQS Quantum Simulations2,962Apache-2.0
qoqo_qiskit_devicesIBM's Qiskit devices interface for qoqo python quantum computing toolkit26,326Apache-2.0
qora-flQora: Quorum-Oriented Robust Aggregation for Federated Learning925MIT OR Apache-2.0
qorbConnection Pooling273,679MPL-2.0
qorechain-pqcQoreChain post-quantum cryptography — FIPS-204 ML-DSA, FIPS-203 ML-KEM, FIPS-202 SHAKE-256, with blockchain helpers.…72Apache-2.0
qorechain-rdkRust Rollup Development Kit for the QoreChain network.118Apache-2.0
qorechain-sdkQoreChain SDK for Rust: networks, denom/address utils, HD accounts (native/EVM/SVM), ML-DSA-87 PQC signing, typed messages for…138Apache-2.0
qorkShorten URLs from your terminal — the qork.me command-line client77PolyForm-Noncommercial-1.0.0
qorrectionPTY wrapper that intercepts Vim-style quit commands typed into other CLI tools and responds with playful animations.20MIT OR Apache-2.0
qorxQorx Community Edition source CLI for local context-resolution research.44AGPL-3.0-only
qosOpenHarmony's qos binding for rust27MIT OR Apache-2.0
qos_clientMultipurpose CLI client for interacting with QuorumOS enclaves and related operations342AGPL-3.0-only
qos_coreCore components and logic for QuorumOS applications103,819AGPL-3.0-only
qos_cryptoCryptographic primitives for use with QuorumOS105,559AGPL-3.0-only
qos_hexUtilities for encoding and decoding hex strings111,509AGPL-3.0-only
qos_jsonCanonical JSON encoding for deterministic JSON39,310AGPL-3.0-only
qos_netSocket to TCP proxy for QuorumOS enclave network access78,169AGPL-3.0-only
qos_nsmAWS Nitro Secure Module attestation endpoints and types105,582AGPL-3.0-only
qos_p256Signing and encryption utilities for P-256 keys110,823AGPL-3.0-only
qos_test_primitivesTest utilities and helper primitives for QuorumOS crates60,109AGPL-3.0-only
qotQuantum of Thought5,003MIT
qotdAn implementation of RFC 8652,970
qoxideA lightweight local job queue backed by SQLite262MIT
qpQuick Pool: High Performance Async Generic Pool10,712MIT
qp-dilithium-cryptoDilithium post-quantum cryptographic signatures implementation for Substrate3,176MIT
qp-human-checkphraseGenerate human-readable checksums from cryptocurrency addresses using BIP-39 words and PBKDF2 to prevent address poisoning attacks497MIT
qp-plonky2Recursive SNARKs based on PLONK and FRI15,563MIT OR Apache-2.0
qp-plonky2-coreCore traits and types shared between plonky2 prover and verifier10,685MIT OR Apache-2.0
qp-plonky2-fieldFinite field arithmetic16,101MIT OR Apache-2.0
qp-plonky2-verifierPlonky2 verification library - minimal, no-std compatible, no randomness required10,613MIT OR Apache-2.0
qp-poseidonPoseidon hash implementation for Substrate/Polkadot ecosystem using plonky3 field arithmetic8,605MIT-0
qp-poseidon-constantsPrecomputed Poseidon2 constants for Goldilocks field15,099MIT-0
qp-poseidon-coreSelf-contained Poseidon2 hash core over Goldilocks13,271MIT-0
qp-postgresQuick Pool: High Performance Async Generic Pool PostgreSQL Adapter2,952MIT
qp-rusty-crystals-dilithiumPure Quantus RUST implementation of CRYSTALS-Dilithium digital signature scheme8,829GPL-3.0
qp-rusty-crystals-hdwalletPure Quantus RUST implementation of HD wallet functionality with post-quantum cryptography8,409GPL-3.0
qp-trieAn idiomatic and fast QP-trie implementation in pure Rust, written with an emphasis on safety.355,606MPL-2.0
qp-wormhole-aggregatorQuantus-Network - Wormhole circuit implementation using Plonky23,386MIT
qp-wormhole-circuitQuantus-Network - Wormhole circuit implementation using Plonky26,532MIT
qp-wormhole-circuit-builderQuantus-Network - Wormhole circuit implementation using Plonky25,504MIT
qp-wormhole-inputsPublic input types for Wormhole circuit proofs4,094MIT
qp-wormhole-proverQuantus-Network - Wormhole circuit implementation using Plonky24,334MIT
qp-wormhole-verifierQuantus-Network - Wormhole circuit implementation using Plonky25,975MIT
qp-zk-circuits-commonQuantus-Network - Wormhole circuit implementation using Plonky26,723MIT
qp2pPeer-to-peer networking library using QUIC337,226MIT OR BSD-3-Clause
qpackHTTP3 QPACK header compression algorithm accoring to IETF#9204.306MIT
qpakAn unofficial Quake PAK file manipulation tool826MIT
qpak-libqpak-lib: Unofficial Quake PAK file modification library1,043MIT
QPalRustA parser and static code analysis tool for quantum circuits, currently under development81BSD-2-Clause
qparasQuery the Paras.id API, returning unpaginated JSON data1,581MIT OR Apache-2.0
qpathRegister, list, and maintain frequently used file and directory paths69MIT
qpayQPay V2 API SDK for Rust26MIT
qpdfRust bindings to QPDF C++ library46,125MIT/Apache-2.0
qpdf-sysRust bindings to QPDF C++ library via FFI and bindgen49,664MIT/Apache-2.0
qpet-sperrHigh-level Rust bindings to the QPET-SPERR compressor5,788MPL-2.0
qpet-sperr-sysLow-level Rust bindings to the QPET-SPERR compressor5,966MPL-2.0
qpg6200-pacPeripheral Access Crate for Qorvo's QPG6200(L)12MIT
qpid_protonRust bindings for the Apache Qpid Proton C library.14,816Apache-2.0
qpid_proton-sysRust bindings for the Apache Qpid Proton C library.21,988Apache-2.0
qpidfileA minimal library for managing a process' pidfile.3,2870BSD
qplQuigly's Platform Layer23,243MIT
qplanCompile a typed query AST (qexpr) into execution-friendly plans (prime-ideal: planning).101MIT OR Apache-2.0
qpmQuick command line password manager written in Rust.8,472MIT
qpmlQuery Plan Markup Language (QPML)15,289Apache-2.0
qpprintSimple console printing/formatting.7,9520BSD
qprimeAn experimental programming language for quantum and weather calculations/applications.2,652Apache-2.0
qprotocolSTUN, forward and QUIC packet routing protocol implementation for dquic38Apache-2.0
qproxyA simple forward proxy server written in Rust16,804MIT
qptrieA QP-Trie implementation for Rust23,034ISC
qqlightweight alternative quote123MIT-0
qq-bot...2,807MPL-2.0
qq-bot-rsAsync Rust SDK for the Tencent QQ Bot v2 platform — HTTP + gateway + typed events.39MIT
qqcliQQ 本地数据 CLI — 读取聊天记录、搜索、统计、导出50MIT
qqgA small CLI search tool.1,679MIT
qqmusic-rsSimple wrapper for QQMusicApi7,318MIT
qqrlQuick Query for Rust Ledger256AGPL-3.0
qqwingQQwing is software for generating and solving Sudoku puzzles. This is a rust version.1,855GPL-2.0-or-later
qqwrysearch ip address with qqwry.data using rust3,200non-standard
qqxqqx is a 3d library for rust based on OpenGL5,746GPL-3.0
qqx-macroHelper crate to improve user experience while using qqx6,139GPL-3.0
qrQR cli5,216MIT
qr-apiA simple and fast QRcode encoder/decoder API written in rust.1,615MIT
qr-base44Base44 encode/decode for arbitrary bytes using URL-safe QR-compatible alphabet262Apache-2.0
qr-base45Base45 encode/decode for arbitrary bytes per RFC 9285 (QR alphanumeric alphabet)305Apache-2.0
qr-code-stylingStyled QR code generation with customizable dots, corners, gradients, and logo embedding6,829MIT
qr-encodeA simple CLI QR Code generator14,987MIT
qr-genCLI tool to generate QR-Code from text2,882MIT
qr-generatorqrcode generator to generate string into qrcode5,612MIT
qr-generator-cliCommand line QR code generator for those who love tools that just work1,513MIT
qr-guiGUI for qr-scan-rs19MIT OR Apache-2.0
qr-imageA simple CLI tool to generate a qr_code image for easy sharing and privately2,478MIT
qr-image-coreCreate QR code from a image.2,874MPL-2.0
qr-label-generatorRust library to generate QR code images, with batch generation support from JSON and CSV files. Includes warehouse label…118MIT OR Apache-2.0
qr-makerSimple CLI for QR making3,546MIT
qr-readerA qrcode reader that prints out the data of the qrcode2,798MIT
qr-rsA CLI utility to encode URLs or text into QR codes in various formats and colors.3,327GPL-3.0-only
qr-rs-commonSome utility functions for the qr-rs project.3,273GPL-3.0
qr-rs-libGenerates QRCodes with a logo overlay.5,010GPL-3.0
qr-scan-rsA comprehensive QR code generator library supporting URL, Text, and vCard formats with advanced customization.90MIT OR Apache-2.0
qr-scannerA cross-platform QR code scanner with screen capture and clipboard integration35MIT
qr-specsQR Code data specifications generator1,583MIT
qr-swastika-avoiderDetect and avoid accidental hooked-cross (swastika) patterns in QR codes27MIT
qr-testerA CLI tool to scan QR codes from images and benchmark performance330Apache-2.0
qr-transferFile transfer over QR codes — stop-and-wait ARQ in the terminal79MIT
qr2cairoVector drawing of QR code using Cairo2,603MPL-2.0
qr2termStupidly simple Rust crate to render a QR code in the terminal.842,009MPL-2.0
qr2textRender a QR code in the terminal2,195MIT
qr_benchmarkA benchmarking suite for Rust QR code decoding libraries29MIT
qr_cliCommand line tool to create and read QR files.1,575MIT
qr_codeQR code encoder in Rust, support structured append (data in multiple qrcodes)165,760MIT OR Apache-2.0
qr_from_strMaking it easy to generate QRCode in SVG from str1,569MIT OR Apache-2.0
qr_terminalGenerates and prints a QR code to the terminal.2,643MIT/Apache-2.0
qr_webWebAssembly frontend for qr-scan-rs21MIT OR Apache-2.0
qraftTyped Rust query builder with CTE and soft-delete support.37MIT OR Apache-2.0
qraft-coreCore type system, query model, decoding, and SQL lowering primitives for qraft.49MIT OR Apache-2.0
qraft-deriveProcedural derives for qraft query-builder models, rows, and projections.45MIT OR Apache-2.0
qraft-derive-coreShared derive implementation helpers for qraft procedural macros.87MIT OR Apache-2.0
qraft-expression-macroProcedural macro support for qraft expression construction.75MIT OR Apache-2.0
qrai-scanner-cliCLI for QR code validation and scannability scoring17MIT
qrai-scanner-coreHigh-performance QR code validation and scannability scoring for artistic QR codes86MIT
qraisc-coreHigh-performance QR code validation and scannability scoring for artistic QR codes17MIT
qrateA examination generator library that generates different quiz sets for all students so that each student may have a different…458MIT OR Apache-2.0
qrate-guiA GUI examination generator library that generates different quiz sets for all students so that each student may have a different…56MIT OR Apache-2.0
qrawsimple terminal drawing canvas.2,365MIT
qrawlRust toolkit to crawl web data for AI agents2,102MIT
qrbillA implementation of [qrbill](https://www.swiss-qr-invoice.org/) in Rust6,505MIT/Apache-2.0
qrcA Rust library for generating and manipulating QR code images in various formats11,449MIT OR Apache-2.0
qrc-opensource-rsThe free opensource version of the Quantum Secure Cryptographic library in Rust (QRC)5,818non-standard
qrcliA QRCode cli tools, can encode and decode3,927MIT
qrcli-rscommand line qr code generator6,456MIT
qrcodeQR code encoder in Rust17,127,445MIT OR Apache-2.0
qrcode-ai-scannerQR code decoding and scannability scoring for artistic, AI-generated, and photo-captured QR codes243AGPL-3.0-or-later
qrcode-ai-scanner-cliCLI for QR code decoding and scannability scoring — artistic, AI-generated, and photo-captured QR codes239AGPL-3.0-or-later
qrcode-ai-scanner-coreHigh-performance QR code validation and scannability scoring for artistic, image-embedded, custom styled, and photo-captured QR…2,243AGPL-3.0
qrcode-cliA Simple CLI tool to generate QR Code5,229MIT
qrcode-coreZero-dependency QR code encoding core (no_std + alloc) — the encoding primitive layer of qrcode-rs.61MIT OR Apache-2.0
qrcode-decodeQR code decoding traits, grayscale views, Structured Append parsing, and optional rqrr adapter for qrcode-rs.29MIT OR Apache-2.0
qrcode-epsPure Rust Encapsulated PostScript rendering backend for qrcode-rs.32MIT OR Apache-2.0
qrcode-fastHigh-performance QR Code generator using WebAssembly42MIT
qrcode-generatorGenerates ISO/IEC 18004 QR Code and Micro QR Code symbols and ISO/IEC 23941 rMQR symbols in pure Rust, then renders them as…4,625,460MIT
qrcode-generator-evcxrDisplay QR codes in Jupyter notebooks via evcxr44MIT
qrcode-htmlPure Rust HTML table and CSS-grid rendering backend for qrcode-rs.25MIT OR Apache-2.0
qrcode-parseZero-dependency QR payload content parsers (WiFi / vCard / GS1) — the decode-side helpers of qrcode-rs.26MIT OR Apache-2.0
qrcode-pdfPure Rust PDF rendering backend for qrcode-rs.25MIT OR Apache-2.0
qrcode-picPure Rust PIC/troff rendering backend for qrcode-rs.32MIT OR Apache-2.0
qrcode-pngGenerate QR code in png format19,661MIT
qrcode-renderPure Rust QR rendering traits, builder, text renderers, ANSI renderer, and color helpers for qrcode-rs.48MIT OR Apache-2.0
qrcode-rsQR code encoder in Rust,Generate QR Code matrices and images in RAW, PNG and SVG formats.39,112MIT OR Apache-2.0
qrcode-rustPure Rust QRCode generator65MIT
qrcode-rust-sharedCore QR Code library shared between qrcode-rust and qrcode-fast213MIT