All 305,250 crates, alphabetically

containerd-shim-loggingLogger extension for containerd v2 runtime2,928Apache-2.0 containerd-shim-protosTTRPC bindings for containerd shim interfaces535,680Apache-2.0API bindingsAsynchronous containerd-shim-wasmLibrary for building containerd shims for wasm18,266Apache-2.0 containerd-shim-wasm-test-modulesSet of WebAssembly modules for testing containerd shims for wasm4,907Apache-2.0 containerd-shimkitOpinionated library for building containerd shims2,542Apache-2.0 containerd-snapshotsRemote snapshotter extension for containerd8,719Apache-2.0API bindingsAsynchronous containerd-storeRead-only access to containerd content and metadata for air-gapped image export147MIT containerflareA runtime for writing Rust-based Cloudflare Workers running in the Cloudflare Workers container runtime617MIT containerflare-commandLow-level command channel client used by Containerflare runtimes770MIT containerizedKubernetes Container Runtime Interface Engine1,738Apache-2.0 containerofMacros and traits facilitating the use of intrusive structures in Rust.16,127MIT containerregistryRust client libraries for OCI container registries197MIT OR Apache-2.0 containerregistry-authDocker config and credential helper integration875MIT OR Apache-2.0 containerregistry-craneCLI tool for interacting with container registries65MIT OR Apache-2.0 containerregistry-gcraneCLI tool for GCR-specific container registry operations64MIT OR Apache-2.0 containerregistry-imageOCI/Docker image manifest, index, and layer types10,421MIT OR Apache-2.0 containerregistry-layoutOCI image layout read/write operations10,252MIT OR Apache-2.0 containerregistry-registryOCI distribution registry client794MIT OR Apache-2.0 containerregistry-testingTest fixtures and parity testing utilities38MIT OR Apache-2.0 containersContainers65,916MIT OR Apache-2.0 containers-apiCommon functionality used in podman-api and docker-api crates.783,273MIT containers-api-connHTTP/TCP connection related helpers12,649MIT containers-image-proxyInteract with the github.com/containers/image library via skopeo294,947MIT OR Apache-2.0 containers-rs'Collections' interfaces for describing objects that contain other objects22,279non-standard containeryardContainer Yard is a declarative, reproducible, and reusable decentralized approach for defining containers. Think Nix flakes…11,314Apache-2.0 containingNewtypes for dealing with collections that are guaranteed to be non-empty474MITNFARust patterns containsA Container trait3,661MITRust patterns contains_lineschecks if one string contains all lines of another string51ISC contastyStrips all executable lines from your code to prepare tasty context for your agent.54MITCommand line utilities contatoriHigh-performance sharded atomic counters for Rust841MITConcurrencyData structures contemplateA template rendering tool designed to render configuration templates.3,918MITCommand line utilitiesConfiguration contentTrait for content-adressable types7,276GPL-3.0 content-addressableIPLD-native content addressing: data that carries its own proof of integrity, intrinsically (BLAKE3 + CIDv1 + canonical dag-cbor).18Apache-2.0CryptographyData structures content-aware-resizingBinary crate for resizing an image using seam carving1,935MIT content-blockerA library for parsing Safari-style content blocking lists and dynamically evaluating the rules against against requests.27,425MPL-2.0 content-canonicalContent canonicalization and text normalization library271Apache-2.0EncodingText processing content-casContent-addressed cache primitive: store bytes under their SHA-256 hex, retrieve by hex, atomic on-disk persistence. Zero deps.17MIT OR Apache-2.0CachingFilesystem content-extractor-rlRL-based article extraction from HTML using Deep Q-Networks and heuristic fallback170MIT OR Apache-2.0ScienceText processing content-extractor-rl-cliRL-based article extraction from HTML using Deep Q-Networks and heuristic fallback69MIT OR Apache-2.0ScienceText processing content-indexUCFP backend-agnostic vector and fingerprint index197Apache-2.0 content-ingestContent ingestion, validation, and normalization pipeline for text and binary data198Apache-2.0Data structuresText processing content-line-writerWriter for icalendar/vcard content lines.3,788ISC content-security-policyWill parse and validate Content-Security-Policy level 3505,279MIT OR Apache-2.0 content-semanticUCFP semantic fingerprinting (embedding generation) crate196Apache-2.0 content-treeAn efficient data structure for compacted RLE data29,633ISC OR Apache-2.0 content-typeParse and format HTTP Content-Type / media-type header values (RFC 9110). A faithful port of the content-type npm package. Zero…39MIT OR Apache-2.0No standard libraryParser implementations content-typesContent types, for web server programming11,719non-standardWeb programmingWeb programming::HTTP server content_dispositionContent-Disposition parser856,567MIT OR 0BSDParsing tools content_distribution_networkA process for distributing, searching, retrieving, and streaming content in a decentralized network.3,113non-standardCommand line utilities content_inspectorFast inspection of binary buffers to guess/determine the encoding13,502,729MIT/Apache-2.0Encoding content_marketing_engineContent Marketing Engine - a Rust library for managing marketing campaigns and content12MIT OR Apache-2.0 content_oracleContent marketing oracle with entropy, prophecies and Bourbaki mathematics. Analyzes metrics, predicts the future, and sacrifices…38MIT OR Apache-2.0 contentfreecontentful client for rust5,103MIT contentfulContentful API Rust Client39,634MITAPI bindings contentful-forkA fork of the contentful crate with support for JSON fields1,649MIT contentiousContention experiments162MIT contentious-cliContention experiments44MIT contentstack-api-client-rsAsync Rust client for the Contentstack CMS API, supporting both Delivery (CDN) and Management APIs with built-in rate limiting…171MIT OR Apache-2.0 contest-algorithmsCommon algorithms and data structures for programming contests14,937MITAlgorithmsData structures contexaGit-inspired context management for LLM agents -- COMMIT, BRANCH, MERGE, and CONTEXT over versioned memory (arXiv:2508.00031)20MITData structuresFilesystem contextCooperative multitasking for Rust using Boost.Context392,617MIT/Apache-2.0 context-allocatorcontext-allocator18,527MIT context-asynccontext handle async future timeout or cancel11,443MIT context-attributeSet the error context using doc comments.10,412MIT OR Apache-2.0Development tools context-barUsage HUD + API-equivalent cost estimator for AI coding agents (Claude Code, Codex CLI). Native macOS menubar app, terminal CLI,…353Apache-2.0Command line utilitiesDevelopment tools context-bar-coreEngine for context-bar: AI coding-agent usage, rolling quota windows, and API-equivalent cost estimation from local transcripts.485Apache-2.0Command line utilitiesDevelopment tools context-builderCLI tool to aggregate directory contents into a single markdown file optimized for LLM consumption2,361MITCommand line utilitiesDevelopment tools context-cliCLI for building, resolving, and inspecting context caches25Apache-2.0Command line utilities context-compressorDynamic token budget context reducer with regex sanitizers.27Apache-2.0CompressionText processing context-coreDeterministic context selection engine for AI agents and LLMs182Apache-2.0AlgorithmsText processing context-coroutineThis is a simple set of extensions to provide stackful coroutines; it is not officially associated with the context crate.4,835MITConcurrency context-creatorHigh-performance CLI tool to convert codebases to Markdown for LLM context3,163MITCommand line utilitiesDevelopment tools context-cutterAgent-agnostic middleware that cuts JSON payload bloat with lazy handles and teasers125MITAPI bindingsCommand line utilities context-driven-developmentContext-driven development installer and tooling137MIT context-engineDeclarative context management for request handlers29MITConfigurationData structures context-footprintA static analysis tool for measuring architectural context exposure in codebases.24Apache-2.0Development tools context-for-promptCreates a context made of all the files and their content.1,554MIT context-forgeLocal-first persistent memory for LLM applications - turso + Tantivy BM25 retrieval, recency decay, token-budget context…272Apache-2.0CachingDatabase implementations context-governorCrate-agnostic governed context compaction with receipts, exact fallback references, and recall quality filters148Apache-2.0Data structuresDevelopment tools context-iteratorsIterators adaptors with associated read-only data.224,309MIT OR Apache-2.0AlgorithmsRust patterns context-loggerA small structured context propagation layer for the standard Rust log ecosystem.3,642MIT OR Apache-2.0AsynchronousDevelopment tools::Debugging context-mapperSingle rust macro for generating different maps2,796MIT context-mapper-derivecontext-mapper derive crate1,892MIT context-mcpMCP server for context storage, text-based retrieval, and temporal tracking with optional persistence121MITDevelopment toolsMemory management context-notationFeatherweight semantic notation for text2,852MIT OR Apache-2.0 context-rsPass values down the async call stack, with no_std and no_alloc support5,014MIT context-snipeDeterministic dependency + CVE context for AI coding tools, over the Model Context Protocol.17MITCommand line utilitiesDevelopment tools context-sporeCrate for managing resources and move them between hardware contexts6,472MITHardware supportNo standard library::No dynamic allocation context-traitRuntime-synthesized trait instances scoped to callbacks65MIT OR Apache-2.0Rust patterns context69-contractsShared request and response types for the Context69 API.247Apache-2.0API bindingsData structures context69-sdkAsync Rust SDK for the Context69 HTTP API.169Apache-2.0API bindingsWeb programming::HTTP client context7-cliSearch library documentation from your terminal — zero runtime, bilingual (EN/PT), multi-key rotation343MIT OR Apache-2.0Command line utilitiesDevelopment tools context_arenaZero-copy and lock-free LLM context engine22MITConcurrencyData structures context_attrAttribute macro to add context to all errors a function produces9,141MIT context_bindSimple M:N threading library. Should support Linux, MacOS, Free/OpenBSD, and Windows for x86/64, and aarch32/644,190Apache-2.0 context_deserializeContext-aware deserialization trait for Rust data structures, extending serde with additional context parameters131,571Apache-2.0 context_deserialize_deriveProcedural macro for deriving the ContextDeserialize trait131,803Apache-2.0 context_errorLibrary to create rich errors to help users understand what the error was and how to fix it3,129EUPL-1.2Rust patterns context_managerPython's like context_managers in Rust16,412MIT OR Apache-2.0 context_manager_macroProcess macro for context_manager crate27,290MIT OR Apache-2.0 context_weaverA lorebook engine for LLM role-playing applications, built on weaver_lang155MIT contextcutPack a repository into ultra-dense, AI-optimized Markdown — gitignore-aware, noise-pruned, with token estimates35MITCommand line utilitiesDevelopment tools contextdA local-first, semantic context daemon for AI agents.55MIT contextdb-cliInteractive CLI for contextdb — explore relational, graph, and vector queries in a REPL105Apache-2.0 contextdb-coreCore types, traits, and error types for contextdb583Apache-2.0 contextdb-engineEmbedded database engine for agentic memory — relational, graph, and vector under unified MVCC transactions242Apache-2.0 contextdb-graphGraph executor for contextdb — bounded BFS, DAG enforcement, typed edges297Apache-2.0 contextdb-parserSQL parser for contextdb with GRAPH_TABLE and vector extensions346Apache-2.0 contextdb-plannerRule-based query planner for contextdb297Apache-2.0 contextdb-relationalRelational executor for contextdb — scan, insert, upsert, delete294Apache-2.0 contextdb-serverSync server for contextdb — NATS-based replication with conflict resolution171Apache-2.0 contextdb-txMVCC transaction manager for contextdb450Apache-2.0 contextdb-vectorVector executor for contextdb — cosine similarity, HNSW indexing, pre-filtered search297Apache-2.0 contextgraph-cliCLI for contextgraph, the versioned context store12MITCommand line utilitiesDatabase interfaces contextgraph-coreVersioned, git-like context store for LLM agent conversations18MITData structuresDatabase interfaces contextgrepGrep your documents with context — fast offline search for PDFs, DOCX, Markdown and code23MITCommand line utilitiesText processing contextifyA tool to save project structure and contents to a text file1,720MIT contextkernelA placeholder crate for contextkernel. More to come.506MIT contextlintLint, score, and compress AI agent context files67MITCommand line utilitiesDevelopment tools contextlite-clientUltra-fast Rust client for ContextLite - the high-performance context engine for retrieval and AI applications7,384MITAPI bindingsDatabase interfaces contextprofA lightweight, drop-in wrapper for profiling MCP server traffic and token usage.17MITDevelopment tools contextqa-coreCore graph types and entity model for the UCM impact-analysis engine17MITAlgorithmsDevelopment tools contextro-coreCore domain types, traits, and errors for Contextro18LicenseRef-Proprietary contextsImplements a type for treating several hashmaps as one.856MIT OR Apache-2.0Data structures contextualUtility crate to deal with data in context447,564MIT/Apache-2.0Data structures contextual-encodercontextual output encoding for xss defense and safe literal embedding, inspired by the owasp java encoder101MITEncodingWeb programming contextual-identitiesThis crate provides wrappers around contextualIdentities Web API1,260MIT OR Apache-2.0API bindingsWebAssembly contextual-identities-sysThis crate provides WebAssembly bindings to contextualIdentities Web API2,466MIT OR Apache-2.0External FFI bindingsWebAssembly contextvm-sdkRust SDK for the ContextVM protocol — MCP over Nostr110MITAPI bindingsAsynchronous conthirThe Conthir CLI1,173Apache-2.0Command line utilitiesCompilers conthir-hirContains the core Conthir data structure called the ConthirTree and tools for parser and block authors.1,283Apache-2.0Data structuresEncoding contigious-treeWrite and read tree graphs to and from contigious blocks of memory.4,119MIT contigous_bitsetStores a set of `bytemuck::Contiguous` values encoded as bits.300Zlib OR Apache-2.0 OR MIT contiguous-arenaEfficient, reusable memory arena for Rust with support for contiguous memory blocks.1,569UnlicenseData structuresMemory management contiguous-memA contiguous memory storage10,928MIT OR Apache-2.0 OR ZlibData structuresMemory management contiguous_bitsetStores a set of `bytemuck::Contiguous` values encoded as bits.1,014Zlib OR Apache-2.0 OR MIT contiguous_collectionsA library of collections backed by flat contiguous arrays2,207MITData structures continent-codeContinent Code8,255Apache-2.0 OR MIT continuationExperimental `catch_unwind`-based continuations3,016MIT continuation-routerAtomically routes a swap between multiple pools.11,201AGPL-3.0 continuation-router-synMacros for generating the continuation router program.14,687AGPL-3.0 continuatorGenerate and stitch AI video clips using OpenAI Sora and Google Veo.289MITCommand line utilitiesMultimedia::Video continueSwift-style continuation API21,133MIT OR Apache-2.0AsynchronousConcurrency continue_streamA Swift-style AsyncIterator.Continuation-style channel for Rust1,058MIT OR Apache-2.0AsynchronousConcurrency continuity-runtimeTyped continuity and incident surface crate with bounded recovery profiles; not an incident-command runtime60MIT continuous-renameA command-line tool to batch rename files in a folder/directory using a numbered pattern.717MITCommand line utilities continuous-testingA continuous testing tool39,139GPL-2.0-or-laterDevelopment toolsDevelopment tools::Testing continuous_density_estimationDensity estimation for continuous distributions712MIT continuumContinuum CLI - Terminal Agent Product52MITAPI bindingsCommand line utilities contnapMonitors network traffic and wakes up "napping" containers when a request arrives. It buffers the initial handshake, starts the…35GPL-3.0-onlyCommand line utilitiesNetwork programming contourCompute isorings and contour polygons (using marching squares algorithm).88,427MIT OR Apache-2.0 contour-isobandsCompute isobands and contour polygons (using marching squares algorithm).11,765AGPL-3.0-or-later contour_tracingA 2D library to trace contours.25,350EUPL-1.2AlgorithmsGraphics contourableA library for differentiable functions10,060MIT OR Apache-2.0 contours2heightmapA CLI tool to convert contour line bitmap images into heightmaps.1,291MITCommand line utilitiesGraphics contourwallProvides a high-level interface for controlling the Contour Wall1,344MIT contourwall_coreProvides a low-level interface to control the Contour Wall4,184MIT contraA minimal serialization/deserialization library with expanded persistency functionality32,997non-standardConfigurationEncoding contrabandContraband is a web framework for building modular and scalable applications5,145MIT OR Apache-2.0AsynchronousNetwork programming contraband_codegenContraband proc macros5,800MIT OR Apache-2.0 contraband_dieselContraband module for Diesel1,714MIT OR Apache-2.0 contracISP connection tracker1,675MIT contract-addressA utility crate to create an ethereum contract address20,460MIT OR Apache-2.0 contract-analyzeLibrary determining source language for smart contracts on substrate44,184Apache-2.0 contract-bridgeData types and primitives for the game of contract bridge2,396Apache-2.0Game development contract-buildLibrary for building ink! smart contracts302,325Apache-2.0 contract-cliBeautiful contracts from the CLI — NDA, NCNDA, consulting, MSA, SOW, service, loan. Plain English, 1-3 pages, agent-friendly.51MITCommand line utilities contract-extrinsicsLibrary defining extrinsics for smart contracts on polkadot-sdk84,526Apache-2.0 contract-info[ink!] Rust based eDSL for writing smart contracts for Substrate1,599Apache-2.0 contract-metadataLibrary defining metadata for smart contracts on substrate458,780Apache-2.0 contract-schema-genGenerate JSON schemas for RecursiveIntell contract and proof runtime types35MIT contract-sysFFI bindings to libcontract4,157MITExternal FFI bindings contract-testkitT0 contract-testkit：Fake/Recording + per-trait conformance suite（SPEC-TESTKIT-002 §3.2）16MIT contract-transcodeLibrary encoding calls for smart contracts on substrate201,043Apache-2.0 contract-utilsA package for Test env2,322MIT contract-verification-migratorCopy contract verification from one block-explorer to another1,529MIT contractdiffCommandline program to output color-diff of contract code between two contract addresses. Suitable to use against non-verified…1,618MITCommand line utilities contractionsContractions is a rust library to expand contractions in English.35,524MITText processing contractsDesign-by-contract attributes1,372,271MPL-2.0Development toolsDevelopment tools::Procedural macro helpers contracts-nodeSubstrate node configured for smart contracts via `pallet-contracts` and `pallet-revive`.10,245Unlicense contracts-node-runtimeRuntime configured for smart contracts via `pallet-contracts` and `pallet-revive`.11,890Unlicense contracts-parachain-runtimeParachain Runtime configured for smart contracts via `pallet-contracts` and `pallet-revive`.9,234Unlicense contracts-rococo-runtimeParachain testnet runtime for FRAME Contracts pallet.27,033Apache-2.0 contracts-tryDesign-by-contract attributes8,146MPL-2.0Development toolsDevelopment tools::Procedural macro helpers contrafactA trait for highly composable constraints ("facts") which can be used both to verify data and to generate arbitrary data within…193,358MITDevelopment tools::Testing contrag-coreContRAG - Advanced RAG library for ICP canisters with on-chain storage183MITAPI bindingsWebAssembly contrailSimple state restoration for backtracking search algorithms using a trail.24,342MPL-2.0AlgorithmsMemory management contrail-cliContrail CLI: service lifecycle plus history import and cross-machine export/merge171MIT contrail-collectionsCollections built on top of contrail.11,804MPL-2.0Data structuresMemory management contrail-dashboardContrail dashboard web UI for local-first session logs130MIT contrail-deriveCustom derive for contrail.10,970MPL-2.0Memory management contrail-memexSelf-managed context layer for coding agents153MIT contrail-typesShared Contrail log schema and protocol types766MIT contrailsAll-in-one installer for Contrail: local-first flight recorder for AI coding sessions35MIT contralogComposable logging with monoids and contravariant functors.1,749non-standard contrastCalculate contrast between two colors164,583MIT OR Apache-2.0 contrast-checkerA simple CLI tool for calculating the contrast ratio between two colours to check for WCAG AA/AAA compliance2,999MITCommand line utilities contrast-diff-viewerA simple diff viewer for Git.17,585GPL-3.0 contrast_rendererA web-gpu based 2D render engine4,905MIT contrastedSimple library for checking the contrast between two colors.2,280AGPL-3.0-or-later