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.
cntp_icon_tool_macrosProvides a macro to generate a Contemporary application icon from base icons156MIT
cntp_localesupportProvides information about locales and provides locale-aware formatting2,277MIT
cntrA container debugging tool based on Linux mount API16,687MIT
cntr-fuseRust library for filesystems in userspace (FUSE) (fork with functionality needed for the cntr project)29,019MIT
cntr-fuse-abiABI types for communicating with the FUSE kernel interface13,338MIT
cntr-fuse-sysFFI bindings to the FUSE kernel interface and libfuse14,221MIT
cntr-nixRust friendly bindings to *nix APIs (fork with features used in cntr)10,569MIT
cntrdctEvidence-based contradiction linter for Rust, Python, TypeScript, and Go.968MIT
cntrlrSimple, async embedded framework1,798AGPL-3.0-or-later
cntrlr-buildBuild script support for Cntrlr3,652AGPL-3.0-or-later
cntrlr-macrosHelper macros for Cntrlr2,834AGPL-3.0-or-later
cntryl-stressLightweight benchmark runner for single-shot and duration-based stress tests1,265Apache-2.0
cntryl-stress-macrosProc macros for cntryl-stress benchmark framework1,281Apache-2.0
cntxCntx Code: BYOK, token-efficient AI coding assistant with built-in doc search and token saving229MIT
cnucnu21,194MulanPSL-2.0
cnvCommand-line tool to convert between units of measurement6,067MIT
cnvkitA Rust implementation of CNVkit — a toolkit for copy number variant detection and analysis20Apache-2.0
cnvlens-coreRust/WASM BGZF/BAM parser + CNV/SNV pipeline for CNVLens122MIT
cnvrta crate for converting types3,439non-standard
cnvxcnvx optimization library86MIT
cnvx-clicli for cnvx optimization library21MIT
cnvx-corecore traits for cnvx optimization library186MIT
cnvx-lplinear programming solver for cnvx optimization library113MIT
cnvx-mathmath utilities for cnvx optimization library147MIT
cnvx-parseparser for cnvx optimization library64MIT
cnxA simple X11 status bar5,456MIT
cnx-contribAdditional widgets for Cnx status bar1,977MIT
cnxtColoring made simple, for your terminal.5,111MPL-2.0
coEfficient byte packet encoding/decoding4,466Apache-2.0 OR MIT
co-actorVery lightweight actor abstraction over tokio channels.665AGPL-3.0-only
co-apiCOKIT API to implement a Core.716AGPL-3.0-only
co-authorCo-Author your git commits from the command line5,225AGPL-3.0
co-authorsExtract co-authors from a commit message.4,168MIT OR Apache-2.0
co-bindingsCOKIT language bindings and FFI24AGPL-3.0-only
co-cliCOKIT command-line interface for managing COs and Cores.20AGPL-3.0-only
co-core-boardKanban Board Core.250AGPL-3.0-only
co-core-coCO Root Core.289AGPL-3.0-only
co-core-fileHierarchal file structure core.246AGPL-3.0-only
co-core-keystoreKeystore core to store certificates, passwords and shared keys.356AGPL-3.0-only
co-core-membershipMembership core.245AGPL-3.0-only
co-core-namesCO Name Service Core. Stores metadata about records.245AGPL-3.0-only
co-core-rich-textRich text core.244AGPL-3.0-only
co-core-roomMessaging room core.245AGPL-3.0-only
co-core-storageReference counting storage pinning core.245AGPL-3.0-only
co-did-keyCOKIT fork of did-key — Implementation of the did:key method.549Apache-2.0
co-didcommCOKIT fork of didcomm-rs — DIDComm messaging v2 implementation with modern crypto and WASM support.550Apache-2.0
co-dioxusHigh level components for using COKIT in dioxus applications.21AGPL-3.0-only
co-guardSource-available trust, policy and governance layer for COKIT.205non-standard
co-identityCOKIT DID and DIDComm implementations.319AGPL-3.0-only
co-jsCOKIT primitives for the browser using WebAssembly.27AGPL-3.0-only
co-libp2p-bitswapCOKIT fork of libp2p-bitswap — Bitswap protocol with authentication, WASM support, and libp2p 0.56.529MIT OR Apache-2.0
co-libp2p-dnsDNS transport implementation for libp2p128MIT
co-logCOKIT Merkle-CRDT log implementation.243AGPL-3.0-only
co-macrosCOKIT macros.889AGPL-3.0-only
co-messagingCOKIT Messaging primitives.283AGPL-3.0-only
co-networkCOKIT Networking related primitives and peer-to-peer implementation using libp2p.244AGPL-3.0-only
co-ormImplement Create, Read, Update, and Delete (CRUD) methods for sqlx.27,256MIT
co-orm-macrosDerive macro for co-orm27,094MIT
co-primitivesCOKIT Primitives used throughout the `co-sdk` and `co-api` and Core implementations.860AGPL-3.0-only
co-runtimeCOKIT WebAssembly Runtime to execute Cores (CO State Reducers).462AGPL-3.0-only
co-sdkOpen-source local-first, peer-to-peer collaboration SDK from 1io.197AGPL-3.0-only
co-storageCOKIT content addressed block storage implementations.654AGPL-3.0-only
co-tracing-bunyan-formatterCOKIT fork of tracing-bunyan-formatter — Bunyan formatter with custom span serialization for tooling integration.431MIT/Apache-2.0
co2-mini-monitorCUI monitor for CO2Mini Indoor Air Quality Monitor4,342MIT
co2keyCLI tool to map game controller input to simulated key presses2,321MIT OR Apache-2.0
co2meter-rsRust library to iteract with co2meters. This is an implementation of the CO2meter python libary…2,894MIT
co2monDriver for the Holtek ZyTemp CO₂ USB HID sensors23,687MIT OR Apache-2.0
co2nsoleCLI for the co2nsole project3,640MIT
co_heapReserved. Heap cooperation for **safe** applications & libraries.1,597Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT
co_managedCreate managed sub coroutines. Managed sub coroutines will be cancelled when the parent exit4,023MIT/Apache-2.0
co_sortSort arrays given a permutation94,290MIT OR Apache-2.0
coaCharter of Accounts for Accounting Information Systems1,705MIT
coa-websiteCOA - HTTP Server in Rust5,132MIT OR Apache-2.0
coachmanrust asynchronous task manager built on top of tokio framework4,329Unlicense
coagentA Rust framework for building agent-based systems with Ractor559MIT OR Apache-2.0
coalA static HTML development tool, built with Rust3,266MIT
coal-apiAPI for interacting with the coal program17,304Apache-2.0
coal-cliA command line interface for COAL cryptocurrency mining.22,188Apache-2.0
coal-guilds-apiAPI for interacting with the coal guilds program8,167Apache-2.0
coal-pool-clientCoal mining pool client.11,499Apache-2.0
coal-utilsUtils for building ORE programs14,969Apache-2.0
coalesceCombine disjoint types that share common traits.7,900MIT
coalesce-workerCoalescing worker thread with generation-counter stale-result rejection — the discipline needed to run tree-sitter (or any…46MIT
coalesced_intervalsData structure for maintaining maximally-coalesced 1D intervals.241,893Apache-2.0
coalesced_mapA thread-safe, deduplicating map that ensures expensive computations are executed only once per key181,528BSD-3-Clause
coalescentHigh-level AI coordination patterns enabling intelligent agent coalescence512MIT OR Apache-2.0
coalescing_bufferCoalescing Ring Buffer6,831MIT/Apache-2.0
coalignFast arithmetic over keyed numeric maps17MIT
coalyContext aware logging and tracing library.3,060MIT OR Apache-2.0
coapA CoAP library546,923MIT
coap-clientA CoAP client8,270MPL-2.0
coap-gatt-utilsImplementation utilities for CoAP-over-GATT (draft-amsuess-core-coap-over-gatt-02)1,566BSD-3-Clause
coap-handlerInterface to CoAP handlers176,654MIT OR Apache-2.0
coap-handler-implementationsSimple implementations of CoAP handlers149,455MIT OR Apache-2.0
coap-liteA lightweight CoAP message manipulation crate, ideal for embedded environments.682,708MIT OR Apache-2.0
coap-messageInterface to CoAP messages706,591MIT OR Apache-2.0
coap-message-demosDemos of the coap-message ecosystem53,686MIT OR Apache-2.0
coap-message-implementationsImplementations of coap-message traits, and tools for building them171,400MIT OR Apache-2.0
coap-message-utilsUtilities for using coap-message traits200,979MIT OR Apache-2.0
coap-numbersConstants for the CoAP protocol245,520MIT OR Apache-2.0
coap-requestInterface to CoAP requests85,689MIT OR Apache-2.0
coap-request-implementationsImplementations of basic CoAP requests50,255MIT OR Apache-2.0
coap-scroll-ring-serverAn CoAP handler for read access to a scroll-ring40,047MIT OR Apache-2.0
coap-serverRobust async CoAP server3,871MIT
coap-zeroCoAP protocol implementation for no_std without alloc1,701OLFL-1.3
coap_rsempty projec3,727MIT
coapcoreA CoAP stack for embedded devices with built-in OSCORE/EDHOC support1,772MIT OR Apache-2.0
coapumA modern, ergonomic CoAP (Constrained Application Protocol) library for Rust with support for DTLS, observers, and asynchronous…439MIT OR Apache-2.0
coapum-senmlRust implementation of Sensor Measurement Lists (SenML) RFC 8428717MIT OR Apache-2.0
coarse-profTiny library for coarse-grained hierarchical profiling26,836MIT
coarsetimeTime and duration crate optimized for speed14,592,307BSD-2-Clause
coarsetime-saturatedTime and duration crate optimized for speed, fork of coarsetime1,231ISC
coastAPI bindings for Web APIs1,812MIT OR Apache-2.0
coasterhigh-performance computation on any hardware11,617MIT OR Apache-2.0
coaster-blasCoaster library for full BLAS support7,375MIT OR Apache-2.0
coaster-nncoaster plugin providing Neural Network operations7,748MIT OR Apache-2.0
coastraA GUI Library for Rust.2,028non-standard
coasys_juniperGraphQL server library.5,770BSD-2-Clause
coasys_juniper_actix`juniper` GraphQL integration with `actix-web`.1,688BSD-2-Clause
coasys_juniper_codegenCode generation for `juniper` crate.5,979BSD-2-Clause
coasys_juniper_graphql_transport_ws`graphql-transport-ws` GraphQL over WebSocket Protocol implementation for `juniper` crate.4,040BSD-2-Clause
coasys_juniper_graphql_wsLegacy `graphql-ws` GraphQL over WebSocket Protocol implementation for `juniper` crate.4,342BSD-2-Clause
coasys_juniper_hyper`juniper` GraphQL integration with `hyper`.1,652BSD-2-Clause
coasys_juniper_iron`juniper` GraphQL integration with `iron`.1,671BSD-2-Clause
coasys_juniper_rocket`juniper` GraphQL integration with `rocket`.1,649BSD-2-Clause
coasys_juniper_subscriptionsJuniper `SubscriptionCoordinator` and `SubscriptionConnection` implementations.4,662BSD-2-Clause
coasys_juniper_warp`juniper` GraphQL integration with `warp`.3,442BSD-2-Clause
coatNothing yet1,896MIT
coatcheckContracts and a Playwright accessibility runner for Topcoat component workbenches.27MIT
coaxialReal-time reactive server rendered HTML1,414MIT OR Apache-2.0
cob_sickle_macrosMacros for sickle_ui8,711MIT OR Apache-2.0
cob_sickle_mathMath dependencies for sickle_ui8,496MIT OR Apache-2.0
cob_sickle_ui_scaffoldScaffolding framework for sickle_ui8,221MIT OR Apache-2.0
coba-say-helloThis is say hello library2,357MIT OR Apache-2.0
cobaltLow level, UDP based networking library.32,771MIT/Apache-2.0
cobalt-asyncThis library provides a collection of helpful functions for working with async Rust.7,595Apache-2.0
cobalt-awsThis library provides a collection of wrappers around the aws-sdk-rust and lambda_runtime packages.148,998Apache-2.0
cobalt-binStatic site generator written in Rust99,166MIT
cobalt-configStatic site generator written in Rust18,144MIT OR Apache-2.0
cobalt-coreStatic site generator written in Rust17,629MIT OR Apache-2.0
cobalt-s3-archiverA library and CLI tool to create and validate ZIP archives in S32,870Apache-2.0
cobalt-webA simple static web framework, enabling individuals to build beautiful websites fast. Written in Rust.10,056MIT
cobalt_osA Simple x64 Kernel1,688MIT
cobaltoA fast, batteries-included web framework for Rust, inspired by Django and Laravel.628MIT
cobbWIP library to help track down bugs in concurrent algorithms2,533Apache-2.0 OR MIT OR Zlib
cobbleA flexible embedded key-value storage engine for distributed systems as well as single-node applications.288Apache-2.0
cobble-cliCommand-line tools for Cobble storage engine104Apache-2.0
cobble-coreLibrary for managing, installing and launching Minecraft instances and more.18,555MIT
cobble-data-structureStructured data API wrappers for Cobble100Apache-2.0
cobble-langA modern, Python-like language for creating Minecraft Data Packs178MIT
cobble-web-monitorEmbeddable HTTP web monitor for Cobble databases169Apache-2.0
cobc-oracle-rsDrives the GnuCOBOL cobc compiler as an oracle: builds/runs COBOL fixtures and captures deterministic, canonical-JSON receipts…35GPL-3.0-or-later
cobenchStatistically rigorous performance benchmarking, powered by Conformal Prediction1,569MIT
cobertura-splitterA tool for splitting a single cobertura file into multiple files by packages3,114MIT OR Apache-2.0
cobhanCobhan FFI is a system for enabling shared code to be written in Rust and consumed from all major languages/platforms in a safe…22,167non-standard
cobiaCAPE-OPEN COBIA binding interface library for rust704MIT
cobia_macromacros for cobia crate942MIT
cobinMinimalistic bindings for Metal and related Cocoa frameworks.3,002MIT OR Apache-2.0
cobjectA game engine that uses minifb as a foundation and currently only supports 2D.46MIT
cobogoA UI layout library for Rust, ported from Clay113Zlib
cobogo-renderer-ratatuiRatatui renderer for Cobogo UI layout library92Zlib
cobol_redis_b2mCOBOL-style B2M Backend with Redis - Business-to-Many Engine15MIT OR Apache-2.0
cobol_rust_serdeCOBOL Copybook -> Rust Struct + Serde Modernizator15MIT
cobolparserAleph Parser for Cobol language : generate Aleph Syntax Tree.158non-standard
cobraHow to make Python more like Haskell?1,546MIT
cobra-mbaCoBRA mixed Boolean-arithmetic simplifier13Apache-2.0
cobra-rhiCross platform RHI for vulkan and (WIP) directx. Supports fully bindless resources, RAII on resources, and automatic image…927MIT
cobreOpen infrastructure for power system computation — umbrella crate641Apache-2.0
cobre-cliCommand-line interface for Cobre power system studies643Apache-2.0
cobre-commPluggable communication backend abstraction for the Cobre ecosystem (MPI, TCP, shared-memory, local)990Apache-2.0
cobre-corePower system data model — buses, branches, generators, loads, and network topology1,230Apache-2.0
cobre-emtReserved crate name. The Cobre electromagnetic transient analysis is not yet implemented.19Apache-2.0
cobre-flowReserved crate name. The Cobre power flow algorithms are not yet implemented.19Apache-2.0
cobre-ioCase directory loading and validation for the Cobre power systems ecosystem982Apache-2.0
cobre-mcpModel Context Protocol (MCP) server exposing Cobre operations as tools and resources for AI coding assistants309Apache-2.0
cobre-pythonPython bindings for the Cobre power systems solver — import cobre from Python scripts and Jupyter notebooks21Apache-2.0
cobre-sddpStochastic Dual Dynamic Programming (SDDP) for hydrothermal dispatch and energy planning831Apache-2.0
cobre-solverLP/MIP solver abstraction layer with HiGHS backend for power system optimization979Apache-2.0
cobre-stochasticStochastic process models for power systems — PAR(p), scenario generation, correlated sampling1,107Apache-2.0
cobre-tuiInteractive terminal UI for real-time SDDP training monitoring, convergence visualization, and cut inspection313Apache-2.0
cobre-ucReserved crate name. The Cobre MILP unit commitment solver for hydrothermal dispatch is not yet implemented.19Apache-2.0
cobsThis is an implementation of the Consistent Overhead Byte Stuffing (COBS) algorithm.
COBS is an algorithm for transforming a…46,250,880MIT OR Apache-2.0
cobs-accA COBS accumulator1,826MIT OR Apache-2.0
cobs-codecCOBS codec for Tokio95,379MIT OR Apache-2.0
cobs-rsA minimal no-std library for doing Consistent Overhead Byte Stuffing10,801MIT
cobs-simdCOBS encoding library using SIMD instructions3,925MIT OR JSON
cobs2Consistent Overhead Byte Stuffing — COBS — and variant COBS/R14,687MIT
cobs_codec_rsConsistent Overhead Byte Stuffing (COBS) and COBS/R codec: no_std, zero-dependency, for zero-free framing of serial and packet…76MIT
cobsinCOBS encoding/decoding, in-place. `no_std`, zero allocations.106MIT
cobtA Cache-Oblivious B-Tree implementation in Rust414MIT
cobustA simple library for recovering from panic on async codebase with retries2,965non-standard
cobwebA Rust library for creating encrypted VPNs, focused on simplicity and security9,061AGPL-3.0
cobweb_asset_formatCOB definition with parsing and ser/de.3,560MIT OR Apache-2.0
cobylaCOBYLA optimizer for Rust322,558non-standard
cobyla-argminCOBYLA optimizer for Rust as an argmin solver103non-standard
cocA useful macro collections for struct1,434MIT
coc-rsA Rust crate wrapper around the Clash of Clans public API82,233MIT
cocaData structures with constant capacity4,426Zlib OR Apache-2.0
cocadaCocada — Cross-examination Of Code by Adversarial Diverse Agents: a multi-family judge for your diffs. Model families review the…16MIT
cocaineCocaine Framework Rust76,045MIT