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.
requeuestQueue for HTTP requests using postgres as backing store9,723AGPL-3.0-only
requiemActor framework for Rust3,340MIT/Apache-2.0
requiem-codecUtilities for encoding and decoding frames11,815MIT/Apache-2.0
requiem-connectActix connect - tcp connector service9,444MIT/Apache-2.0
requiem-corsCross-origin resource sharing (CORS) for Actix applications.1,712MIT/Apache-2.0
requiem-filesStatic files support for actix web.1,742MIT/Apache-2.0
requiem-framedActix framed app server1,734MIT/Apache-2.0
requiem-httpActix http primitives9,827MIT/Apache-2.0
requiem-http-testActix http test server1,698MIT/Apache-2.0
requiem-identityIdentity service for actix web framework.1,700MIT/Apache-2.0
requiem-ioframeActix framed service1,731MIT/Apache-2.0
requiem-macrosActix runtime macros13,243MIT/Apache-2.0
requiem-multipartMultipart support for actix web framework.1,761MIT/Apache-2.0
requiem-routerPath router8,259MIT/Apache-2.0
requiem-rtActix runtime12,825MIT/Apache-2.0
requiem-serverActix server - General purpose tcp server10,343MIT/Apache-2.0
requiem-serviceActix service12,318MIT/Apache-2.0
requiem-sessionSession for actix web framework.1,727MIT/Apache-2.0
requiem-testingActix testing utils8,891MIT/Apache-2.0
requiem-threadpoolActix thread pool for sync code13,255MIT/Apache-2.0
requiem-tlsActix tls services8,416MIT/Apache-2.0
requiem-tracingSupport for tokio tracing with Actix services1,745MIT/Apache-2.0
requiem-utilsActix utils - various actix net related services11,438MIT/Apache-2.0
requiem-wcActix http client.9,142MIT/Apache-2.0
requiem-webActix web is a simple, pragmatic and extremely fast web framework for Rust.9,708MIT/Apache-2.0
requiem-web-actorsActix actors support for actix web framework.1,706MIT/Apache-2.0
requiem-web-codegenActix web proc macros9,017MIT/Apache-2.0
require_lifetimesA proc-macro to force rust authors to write lifetimes in function signatures.15,813MIT OR Apache-2.0
require_rsBinanry finder.1,478non-standard
require_unsafe_in_bodyMake `unsafe fn` still require `unsafe` blocks in the function's body363,233MIT
requirementsPython PIP requirements.txt parser13,648MIT
requirements-managerPlain-text requirements management tool550MIT
requirements-txt-generatorAutomatically generate a requirement.txt file for Python projects3,236MIT
reqwA small helper to handle reqwest results more intuitively562MIT OR Apache-2.0
reqwasmHTTP requests library for WASM Apps453,840MIT OR Apache-2.0
reqwesthigher level HTTP client library599,575,303MIT OR Apache-2.0
reqwest-authAuthorization middleware for reqwest.17,966MIT
reqwest-builderA builder for reqwest requests with support for custom headers, query parameters, and body content.3,053MIT
reqwest-builder-deriveDerive macros for reqwest-builder2,207MIT
reqwest-builder-retryLINE API library.5,629MIT
reqwest-cachereqwest-middleware based in-memory HTTP caching middleware6,310AGPL-3.0-only
reqwest-chainApply custom criteria to any reqwest response, deciding when and how to retry.118,223MIT
reqwest-client-bearer-authA crate to add a more ergonomic way to add bearer authentication to reqwest clients340MIT OR Apache-2.0
reqwest-client-gpui-unofficialUnofficial release of Zed's reqwest_client crate503Apache-2.0
reqwest-conditional-middlewareA middleware wrapper that enables (or disables) a wrapped Reqwest middleware on a per-request basis759,808MIT
reqwest-connect-rpcConnect RPC client library for reqwest based clients37Apache-2.0
reqwest-crossWrapper around reqwest for use in both native and wasm18,195MIT OR Apache-2.0
reqwest-datadog-tracingTracing middleware for reqwest that uses the current Opentelemetry Context.464Apache-2.0
reqwest-driveHigh-performance caching, throttling, and backoff middleware for reqwest, with a single-file storage container.7,337MIT OR Apache-2.0
reqwest-enumTyped enum HTTP API for reqwest.12,966MIT OR Apache-2.0
reqwest-env-proxyHelper to let reqwest use proxy from the env `all_proxy`15,225Apache-2.0
reqwest-errorTemp placeholder1,263MIT
reqwest-eventsourceHelper to build an Eventsource using reqwest9,646,551MIT OR Apache-2.0
reqwest-eventsource-wasiHelper to build an Eventsource using reqwest4,211MIT OR Apache-2.0
reqwest-extraExtra utilities for reqwest276MIT OR Apache-2.0
reqwest-fileUse web resources like regular async files3,942MIT OR Apache-2.0
reqwest-graphqlMinimal GraphQL client for Rust20,589MIT
reqwest-h3hitdns fork of higher level HTTP client library5,840MIT OR Apache-2.0
reqwest-headerHeader info parser for reqwest crate1,527MIT
reqwest-hickory-resolverhickory resolver support for reqwest183,342Apache-2.0
reqwest-impersonateAn intuitive and robust Rust HTTP/WebSocket Client featuring TLS/JA3/JA4/HTTP2 fingerprint impersonate101,245MIT OR Apache-2.0
reqwest-kerberosKerberos/SPNEGO authentication for reqwest via Windows SSPI or Linux GSSAPI45MIT
reqwest-lbThe reqwest load balancer middleware5,017non-standard
reqwest-leaky-bucketLeaky-bucket rate limit middleware for reqwest.177,958MIT
reqwest-management-pooladvanced reqwest pool management to improve utilization per client.84MIT
reqwest-maybe-middlewareWrapper over reqwest and reqwest-middleware to provide compatibility for either10,063Apache-2.0 OR MIT
reqwest-metricsMetrics.rs integration for reqwest105,377MIT
reqwest-middlewareWrapper around reqwest to allow for client middleware chains.69,774,346MIT OR Apache-2.0
reqwest-middleware-cacheA caching middleware for reqwest15,784Apache-2.0
reqwest-middleware-forkWrapper around reqwest to allow for client middleware chains.1,235MIT OR Apache-2.0
reqwest-middleware-wasiWrapper around reqwest to allow for client middleware chains.3,624MIT OR Apache-2.0
reqwest-negotiateKerberos/SPNEGO Negotiate authentication for reqwest74MIT OR Apache-2.0
reqwest-netrcnetrc support for Rust with support for reqwest207,443MIT
reqwest-oauthOAuth support for Rust reqwest library1,340Apache-2.0
reqwest-oauth1Add OAuth1 signature to reqwest with oauth1-request.71,017MIT OR Apache-2.0
reqwest-partial-retryWrapper around reqwest to allow for easy partial retries3,102MIT OR Apache-2.0
reqwest-patchedhigher level HTTP client library1,840MIT OR Apache-2.0
reqwest-politenessReqwest middleware to enforce delay between requests54MIT OR Apache-2.0
reqwest-pretty-jsonEasy way to emit prettified JSON body via reqwest::RequestBuilder31,340Apache-2.0 OR MIT
reqwest-protobufProtocol buffer support for Reqwest1,645MIT OR Apache-2.0
reqwest-proxy-poolproxy pool middleware for reqwest1,561MIT OR Apache-2.0
reqwest-rate-limitRate-limit aware request helpers and optional wrapper ergonomics for reqwest.79Apache-2.0
reqwest-ratelimitRate-limit middleware for reqwest.194,816MIT
reqwest-record-replayClient-side HTTP record/replay for reqwest-middleware14MIT OR Apache-2.0
reqwest-replayA library for caching HTTP responses466MIT
reqwest-response-extExtension trait for reqwest::{blocking}::Response1,530Apache-2.0 OR MIT
reqwest-restAn opinionated utility to help with creating (and configuring) one-off idiomatic REST API clients.358MIT
reqwest-retryRetry middleware for reqwest.42,488,203MIT OR Apache-2.0
reqwest-retry-afterRetry-After header support for reqwest105,833MIT
reqwest-retry-wasiRetry middleware for reqwest.1,934MIT OR Apache-2.0
reqwest-rewirereqwest-rewire is a lightweight wrapper around reqwest that transparently rewrites outgoing request URLs based on user-defined…42MIT
reqwest-scraperWeb scraping integration with reqwest23,518MIT
reqwest-scraper-macrosWeb scraping integration with reqwest15,309MIT
reqwest-spiderhigher level HTTP client library3,014MIT OR Apache-2.0
reqwest-sseLightweight SSE client over reqwest81,292MIT
reqwest-ssrf-guardMitigate SSRF and DNS rebinding in reqwest by filtering DNS results, redirects, and URL literals495MIT
reqwest-streamsHTTP body streaming support for reqwest: JSON/CSV/Protobuf and others208,070Apache-2.0
reqwest-torhigher level HTTP client library. Forked with tor support568MIT OR Apache-2.0
reqwest-tracingOpentracing middleware for reqwest.27,247,611MIT OR Apache-2.0
reqwest-tracing-wasiOpentracing middleware for reqwest.1,837MIT OR Apache-2.0
reqwest-traitsTraits for reqwest to allow injecting a custom http client like reqwest_middleware::ClientWithMiddleware13,745MIT
reqwest-vcapra1-add-cookieshigher level HTTP client library8,114MIT/Apache-2.0
reqwest-vcrRecord-and-replay HTTP testing for requests7,325Apache-2.0
reqwest-wasmhigher level HTTP client library93,846MIT/Apache-2.0
reqwest-wasm-extFixes for reqwest on wasm2,843Apache-2.0
reqwest-websocketWebSocket connections with reqwest1,236,351MIT
reqwest-websocket-julien-cpsnWebSocket connections with reqwest1,590MIT
reqwest_clientA helper crate for creating reqwest::Client with rotating proxy support from environment variables. | 一个辅助…4,868MulanPSL-2.0
reqwest_cookie_storeA simple crate providing an implementation of the `reqwest::cookie::CookieStore` trait for `cookie_store::CookieStore`1,155,801MIT/Apache-2.0
reqwest_davAn async webdav client with tokio and reqwest985,989MIT OR Apache-2.0
reqwest_inspect_jsonReqwest extention for json response tracing14,573Apache-2.0 OR MIT
reqwest_mockProvides a mockable reqwest-like HTTP client.2,473,713Apache-2.0
reqwest_proxySeamlessly proxy reqwest traffic through Shadowsocks, Hysteria2, and more. / 通过 Shadowsocks、Hysteria2 等多种协议无缝代理 reqwest 流量。1,535MulanPSL-2.0
reqwest_resumeWrapper that uses the `Range` HTTP header to resume get requests.
It's a thin wrapper around `reqwest`. It's a work in progress…13,895MIT OR Apache-2.0
reqwest_ss_proxyA reqwest middleware for proxying requests through a Shadowsocks server. 一个通过 Shadowsocks 服务器代理请求的 reqwest 中间件。2,536MulanPSL-2.0
reqwest_wasihigher level HTTP client library34,003MIT OR Apache-2.0
reqwewReqwest effortless wrapper.15,847GPL-3.0
reqwlessHTTP client for embedded devices119,344Apache-2.0
reqxRust HTTP transport client for API SDK libraries with retry, timeout, idempotency, proxy, and pluggable TLS backends75,007MIT
rerA rez implementation in rust1,552non-standard
rer-packageFast static parser for the solver-relevant fields of a rez package.py.18non-standard
rer-resolverA faithful Rust port of rez's phase-based package solver.157non-standard
rer-versionVersion and range types matching rez's alphanumeric versioning.214non-standard
rerankFast rank fusion algorithms for hybrid search (RRF, CombMNZ, Borda)28MIT OR Apache-2.0
rerank-blendBlend N RAG reranker score streams (dense, BM25, cross-encoder) with configurable weights and rank-aware normalization. Zero deps.18MIT OR Apache-2.0
rerastAn AST (abstract syntax tree) based search replace tool for code written in Rust129,150Apache-2.0
rerast_macrosMacros for use in Rerast rules5,720Apache-2.0
reratuiA modern, reactive TUI framework for Rust with React-inspired hooks and components, powered by ratatui159MIT OR Apache-2.0
reratui-coreCore types, traits, and virtual DOM implementation for the Reratui reactive TUI framework540MIT OR Apache-2.0
reratui-hooksReact-inspired hooks for state management and side effects in Reratui TUI applications265MIT OR Apache-2.0
reratui-macroProcedural macros for component definition, RSX syntax, and hook validation in Reratui152MIT OR Apache-2.0
reratui-panicPanic handling utilities for Reratui TUI framework407MIT OR Apache-2.0
reratui-ratatuiRatatui backend adapter for Reratui TUI framework134MIT OR Apache-2.0
reratui-runtimeAsync runtime, event loop, and rendering engine for Reratui TUI applications132MIT OR Apache-2.0
rerconA simple RCON library with automatic reconnection support11,249MIT
rereaderA TUI EPUB reader that remembers your reading position22MIT
rerecReadings and records from sensory instruments as used by Herodot and Percepter3340BSD
rerecastRust port of recastnavigation28,361MIT OR Apache-2.0
reredisreredis is a reimplementation of Redis (server) in Rust programming language.3,049non-standard
rerefA tool for transforming the dependencies fields on all Cargo.toml in a given project1,495non-standard
rererouterIron router with regex captures support.3,630MIT
rerobotsRust library for rerobots6,915Apache-2.0
rerobots-clicommand-line interface (CLI) for rerobots1,651Apache-2.0
rerollcli app to roll dice!456non-standard
reroutOfficial Rust SDK for the Rerout branded-link API.87MIT
rerouteA router that can use regular expressions for the hyper package25,262MIT
reruA simple HTTP request client4,885MIT/Apache-2.0
rerunLog images, point clouds, etc, and visualize them effortlessly1,663,275MIT OR Apache-2.0
rerun-cliLog images, point clouds, etc, and visualize them effortlessly177,914MIT OR Apache-2.0
rerun-loader-colladaRerun external mesh loader for collada files1,728MIT OR Apache-2.0
rerun-tonic-web-wasm-clientgrpc-web implementation for use by tonic clients in browsers via webassembly14,484MIT/Apache-2.0
rerun_cRerun C SDK377,836MIT OR Apache-2.0
rerun_exceptRerun a cargo build except when specified files are changed93,629Apache-2.0/MIT
rerun_in_exceptRerun build script if files in a directory have changed, excluding listed ones6,628MIT OR Apache-2.0
rerun_urdfURDF support for Rerun visualization537Apache-2.0
rerupA Rust library for hacking-related utilities, including bruteforcing and fuzzing.3,781MIT OR Apache-2.0
rerustReactive programming with dataflow semantics1,629Apache-2.0
resRes is a build-script dependency for managing your project's resources.18,017Apache-2.0 OR Zlib
res-regexA js-regex validator64,350MIT
res2brA tool to convert between resolutions and bitrates11,614AGPL-3.0-or-later
resaModular Rest interface for searching similar compiler errors to get possible solutions.3,338Unlicense
resalloc-kubernetesA CLI used to allocate kubernetes pod resource for resalloc framework.7,339MIT
resaltResalt is a free, open-source, self-hosted, web-based administration and monitoring panel for SaltStack.2,866MIT
resampleA library based on libsamplerate for converting samplerates278BSD-2-Clause
resamplerA small audio resampling library51,132Apache-2.0 OR MIT
resampler-rsA waveform resampler mainly for audio processing written in Rust10,025non-standard
resamplescope-rsValidate, compare, and plot the resampling filters/kernels used by any image resizer24AGPL-3.0-or-later
resandRead and write ARSC and AXML binary files used for Android Resources1,269Apache-2.0
resand-deriveHelper derive crate for resand48Apache-2.0
resastRusty-ECMAScript Abstract Syntax Tree77,575MIT
resbUtilities for reading and writing ICU resource bundle files2,711,608Unicode-3.0
rescA Redis based task orchestrator9,521MIT
rescript-openapiGenerate type-safe ReScript clients from OpenAPI specifications20non-standard
rescrobbledMPRIS music scrobbler daemon17,810GPL-3.0
rescrobbled-forkMPRIS music scrobbler daemon1,143GPL-3.0
resctl-benchWhole system resource control benchmarks with realistic scenarios30,692Apache-2.0
resctl-bench-intfWhole system resource control benchmarks with realistic scenarios (interface library)31,536Apache-2.0
resctl-demoA guided tour of Linux resource control with live demos30,750Apache-2.0
resctrlA simple agent to interact with Linux resctrl1,496MIT
resctrlfsA crate for reading resctrl fs data6,819Apache-2.0
rescue-blanketEscape values while they are being formatted2,887MIT
rescue_poseidonSponge construction based Algebraic Hash Functions465,480MIT OR Apache-2.0
resead-rsAn implementation of the reverse engineered Nintendo's SEAD library1,758MIT
researchA human-first, local-first personal library for saved URLs.16,976Apache-2.0
research-domainShared CRDT domain and immutable synchronization protocol for ResearchPocket.18Apache-2.0
research-masterMCP server for searching and downloading academic papers from multiple research sources44MIT
research-storeLocal SQLite projection, import, enrichment, and outbox for ResearchPocket.15Apache-2.0
reseeding_rngReseedingRng that periodically reseeds the underlying PRNG105,412Apache-2.0
resembleRust code similarity checker based on AST node embeddings and cosine similarity372MIT
resemble-rustResemble is the easiest way to clone and synthesize natural voice.4,798MIT
resendresend is a easy to use, performant, customizable and extendable Rust library for little-endian/big-endian serializing and…6,252MIT OR Apache-2.0
resend-client-rsBasic port of Resend client1,742MIT
resend-emailClient library to send emails using the Resend API3,811MIT
resend-mcpMCP server for the Resend email API92Apache-2.0
resend-rsResend's Official Rust SDK.435,658MIT
resend-rustA Resend client implemented in Rust5,017MIT
resend_deriveresend derive for resend serializing libarary3,662MIT OR Apache-2.0
resend_email_rsLightweight mailing SDK for Resend.com1,548MIT
resequenceTime-travel simulation engine based on Achron's Resequence engine patterns23MIT
reserRe-serialization of data to a different format3,279MIT OR Apache-2.0