State of the Rust/Cargo crates ecosystem // Lib.rs

Growth of the crates.io registry

Daily downloads since Rust 1.0, 7-day average

Crate downloads are growing at a rate of 2.2× per year.

crates.io has served 567.9 million downloads in a single day, which is more than all downloads in the first 41 months since the release of Rust 1.0 in May 2015.

Traffic during weekdays is typically 2.7× higher than during weekends (down from 2.9× a year before).

Number of users/teams owning a crate on crates.io

There are 55,490 users or teams that have a crate on crates.io. The number of owners is growing at a rate of 1.2× per year.

Lib.rs has indexed 216733 crates.

Dependencies

Number of direct dependencies

Number of libraries explicitly used by each crate. Includes dev, build-time and optional dependencies.

0	1	2	3	4	5	6	7	8	9
32220	17774	18235	20210	16688	13894	12044	10165	8979	7514

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
6331	5781	8879	6398	5314	4082	5849	3337	3051	1627	346	89	47	10	10
dtz-core safe_crypto cargo-cycles m3u_parser fox-dotfile	workspacer-add-new-crate-to-workspace noem df_st_cli tray-item valence_anvil	tauri-plugin-axum volcengine bevy-atlas-loader sp-crypto-ec-utils supasim-kernels	gifclip lsmlite-rs wl-clipboard-rs enprot certo	revaultd meteora-sol maplibre_native twine_builder sudoku_machine	parser-proxy-ws aws-sdk-networkmonitor migratio gilrs-core toon-lsp	swc_ecma_compat_es2015 filepack acme-engine krokiet facet-postcard	tuftool anubis-rage geph4-vpn-helper lol-core axion	livetrace compio-quic cnidarium teamtype cargo-hax	odl rgdb phoenix_gui caro potree-auth	penpal-runtime steer clone-solana-rpc northstar-runtime reqwest	wecanencrypt zcash_client_backend redgold trailbase miraland-core	golem-cli agcodex-core wash pezkuwi-service neo3	deno kodegend kodegen_candle_agent uv atlas-runtime	solana-runtime apollo-router uhg-custom-appollo-roouter pezkuwi-sdk homestar-workspace-hack

Number of transitive reverse dependencies (popularity)

How often each library crate is used as a dependency in other crates, directly or indirectly. Includes dev, build-time, and optional dependencies.

1	2	≥5	≥15	≥50	≥100	≥300	≥1000	≥2500	≥5000	≥10000	≥20000	≥50000
29691	23323	13311	6737	2440	2181	1395	573	279	163	107	126	71
libunwind-sys snowbridge-outbound-queue-v2-runtime-api sov-stf-runner libninja_mir cuddle-please-commands	prisma dioxus-use-mounted periodic-table-on-an-enum atmega32u4 sigye-core	cxx-qt-build submillisecond numbat-wasm-debug pgx-tests snarkos-algorithms	gsl sacp unc-primitives dvcompute_utils amethyst	winit_input_helper safecoin-sdk async-graphql-axum arbtest tui-big-text	xsd-types pezkuwi-primitives surrealdb derive-deftly linfa pallet-transaction-payment-rpc-runtime-api kuchiki nu-plugin inkwell aptos-types	frunk_proc_macro_helpers ic_principal ethers-middleware datafusion-doc kvdb psl-types symphonia-core sha1-checked solana-rent-debits ssh-encoding	wasm-timer wayland-backend resolv-conf ipconfig trust-dns-resolver solana-instructions-sysvar schnellru bevy_render_macros enum-map-derive enum-map	xxhash-rust tiff assert_cmd hexf-parse ghash error-code relative-path jpeg-decoder objc2-quartz-core windows-threading	kernel32-sys fuchsia-cprng slotmap rand_pcg console_error_panic_hook rdrand matches png proc-macro-error-attr2 universal-hash	rustls system-configuration-sys vec_map dyn-clone bincode dirs foldhash cast backtrace toml_parser	clap_derive libredox time-core glob rayon arrayvec rustc-hash hex rayon-core num-conv	tracing parking_lot_core either wasm-bindgen-macro scopeguard tokio redox_syscall futures-util wasm-bindgen js-sys

Development

How long a crate has been in development

Time between its oldest and newest release.

one-off	≤1 week	≤1 month	≤6 months	≤1 year	≤2 years	≤3 years	≤5 years	≤7 years	≤10 years	≤11 years
61260	41805	13805	24948	16887	19807	11123	11560	4902	2359	418
exif-rs openvm-rv32-adapters aws-unlock insectbox anvil-liquid-derive	modifier_macro simple-digraph hashirama mind_sdk_lb zsync	approx_eq poeledger-economy-data uv-pep508 lightbird zigbee2mqtt_types_vendor_zen	kmail torq_lang migratio fromsoftware-dlrf-derive harness-probe-perf	mpdclient-sys rsql_driver_delimited nintendo-lz vino-provider oceanpkg	cardinal-paid-claim-approver tauri-plugin-m3 jsonrpc-async valence_anvil brisk-eframe	serde_json5 staticsort cast_checks_macro evcxr_image salvo-cli	polkadot-gossip-support paris vkrs tectonic_bridge_harfbuzz panic-msp430	ethcontract-generate bevy_reflect_derive debugless-unwrap wasmer-c-api upnp-daemon	logos unicode_names2 open_ai poston base64-serde	fern libloading imageproc djangohashers epoll

Time without any updates

Time since crate's most recent release. Keep in mind that some crates can be "done" and not need regular updates.

≤1 month	≤3 months	≤6 months	≤1 year	≤2 years	≤3 years	≤4 years	≤5 years	≤7 years	≤10 years	≤11 years
26647	16939	17142	24084	33777	26783	19271	14263	19027	9763	1178
googleapis-tonic-google-cloud-cloudcontrolspartner-v1beta gix-trace infrarust cargo-cycles koto_geometry	sha256sum datafusion meshtnc bevy_la_mesa hotaru_core	gilrs-core aws_utils_firehose fundamentum-iot-mqtt-proto tw_merge_variants scalop	mctp-usb-embassy hp_tr_finder zapvault anathema-strings screencap	mockingparrot url_handler bevyhub_core rengrep embedded-websocket	line_channel_access_token jupyter async_monad triseratops jadesrandomutil	wasi_snapshot_preview1 crcnt_rbac pty2 libopenraw-sys facebook-graph-api-object-error	uddsketch adsbx_browser tide totally-ordered avanza	cargo-llvm-codecov-converter polyhorn-test grrs-henry-hao wolfsay kdmapi	wasm-typescript-definition lpc11uxx zwr plotfx adder_of_sean	moreops functor miso libstrophe-sys ruplicity

Age

Time since crate's first release.

≤1 month	≤3 months	≤6 months	≤1 year	≤2 years	≤3 years	≤4 years	≤5 years	≤7 years	≤10 years	≤11 years
9131	9424	11767	21455	35005	31487	24312	19160	27592	16381	3160
eva-rt-common facet-postcard zinit_server eulumdat-ffi pezcumulus-pezpallet-xcm	sifredb-derive arct-tui rustlite fusion-core hyprtask	parser-proxy-ws pibtool-stock-data sbm-rs emscripten_rs_sys nesting	xrechnung this-env teacat_lib anvil-liquid-derive git-bug	mc-cli traefik_wasm_api crc32fast-lib polkadot-runtime-releaser-lib hashirama	qingke-rt noise-algebra vector-expr smol-macros aws-sdk-networkmonitor	soroban-ledger-snapshot dimensional_quantity courses tritium_remote dynamodb-tester	docbot-derive localzone kyun tree-sitter-json tongrams	subcryptor ckb-sentry-backtrace better_term scall async-global-executor-trait	libp2p-mplex tictactoe-rust jws gitmoji-changelog-rust virtdisk-rs	get_if_addrs isbnid cdb directwrite miso

Number of releases per crate

Number of unique versions of each crate, excluding yanked versions.

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
64721	50575	40442	27439	15346	5093	3479	1705	74
insectbox anvil-liquid-derive exif-rs aws-unlock openvm-rv32-adapters	statefun zsync parser-proxy-ws modifier_macro rocket_anyhow	clock-bound-shm seaplane-oid egui-datepicker bred64 nom-parse-macros	smartcardhsm_pkcs11_loader sudoku_machine approx_eq boreal-parser plex-api	shticker_book_unwritten gix-trace azure_mgmt_deploymentmanager imag-bookmark design_token_parser	mollusk-svm-fuzz-fixture-firedancer fav_core gst-plugin-aws arysn arborium-r	git-odb flowcore tuifw-screen-winapi bevy_input geekorm-cli	cargo aws-sdk-appfabric pact_mock_server aws-sdk-codegurusecurity cargo-spellcheck	solana-logger advent-of-code solana-rayon-threadlimit solana-metrics rustc-ap-arena

Number of crates per user

How many crates a single account (user or team) owns. Excluding all other people in the world who have 0 crates.

1	2	3	≥6	≥25	≥50	≥75	≥100	≥150	≥200	≥1000
26497	9548	9740	7773	983	237	103	77	36	39	1
canadaduane wess caius dgoodlad fd	mudge vic pnathan deontologician schacon	ratmice Tristramg oleganza emkay antage	walkah jedbrown clifton thequux vitorpy	Tpt dherman amandasaurus mre marirs jjl srctrait ehuss	devolutionsinfra hardliner66 tyleo alecmocatta marc2332 ananas-block stellar-crates arcnmx	soareschen AbstractSDK rvolosatovs bevyengine kpcyrd j-mendez rise0chen snnsnn	unicode-org bmwill HKalbasi rust-lang shellrow OpenTalk-Bot mattsse gengteng	vpetrigo RickWinter silwol miralandlabs Dirbaio swc-bot therustmonk Traverse-Research-CI-runner	cool-japan seam345 dtolnay Azure sdroege azure-sdk RustCrypto newpavlov

Sizes

Crate size (KB)

Amount of data downloaded as a compressed tarball. Size of code + bundled data files. Individual crate pages show size of uncompressed code.

≤1KB	≤10KB	≤50KB	≤100KB	≤500KB	≤1MB	≤5MB	≤10MB	≤38MB
22534	71386	77345	14461	13858	3239	5014	998	39
pbbot rust-ggm-test zigbee2mqtt_types_vendor_zen simple-digraph yttrium_std_database_exists	write_mode nesting rename grrs-cli unc-abi-client-impl	hashtree-fs egui-datepicker fxp_clutter aws-auth-payload drt-price-aggregator-sc	compio-quic avx-gis-desktop sapter imagnum npsimd	audiobook-forge blueprint-chain-setup-common geoarrow-array ryot icondata_cg	miv-editor kn-cuda-eval tic_tac_toe lpc13xx-pac esp32s2	bevy_flair devstrip easy-alias dotnetrawfilereader-sys duroxide	switchboard-solana bevy_crt cw-it cargo-glados clfft	efm32wg-pac stm32-metapac occt-sys mysqlclient-src musix

Crate total bandwidth (GB)

Amount of data downloaded as a compressed tarball × number of downloads per month.

≥1MB	≥10MB	≥100MB	≥1GB	≥10GB	≥100GB	≥1TB	≥5TB	≥10TB
39587	19553	9351	4742	2177	842	143	18	26
fixlite bevy_touch_stick regview	mu_rust_helpers rs-builder-signing-sdk wallexerr turbocommit	mini-rag bs62 gemlab gearhash moshi	swc_ecma_compat_es2022 errno-dragonfly gix-merge lber symphonia-format-caf frunk_proc_macro_helpers	fxhash bevy_reflect_derive deadpool-postgres wl-clipboard-rs subprocess bevy_input rustc-stable-hash	backon jsonpath-rust xkeysym xattr async-stream futures-timer flexi_logger crc	quote protoc-bin-vendored-win32 icu_properties malachite-nz smallvec futures minimal-lexical lzma-sys schemars	k8s-openapi librocksdb-sys aws-lc-fips-sys web-sys nix brotli rustls hashbrown object libgit2-sys	windows_x86_64_gnullvm rustix v8 winapi regex-syntax ring winapi-x86_64-pc-windows-gnu windows_i686_gnu windows linux-raw-sys

Ecosystem

Number of crates that have each of the alternatives in their dependencies. More popular doesn't mean better. These crates and categories were hand-picked.

Runtimes
tokio	async-std	pollster	smol
38439	1565	424	301

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
5093	2873	1249	580	542	156	42	20

TLS clients
rustls	native-tls	openssl
6225	2239	1795

git clients
git2	gix
1788	246

Loggers
log	tracing	slog
61593	35351	544

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
62832	36641	3111	2805	1781	1498

Argument parsers
clap	getopts	pico-args	argh	argparse
30878	1367	626	378	120

Markdown parsers
pulldown-cmark	markdown	comrak
1281	250	239

TOML parsers
toml	toml_edit	basic-toml
18779	11322	180

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
9374	5681	2092	1610	1163	156

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
60182	458	428	67	22

Parser generators
nom	pest	combine	peg	pom	lalrpop
11532	5593	2311	699	177	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
2801	2106	1131	351	95	32	24

Temp files
tempfile	tempdir
9977	494

Rustc compatibility

Percentage of crates (in their current version) that can be compiled with a given Rust version. The data is based on sampling of cargo check and clippy::incompatible_msrv on Linux/aarch64. Excludes crates that never built (e.g. because they need nightly, or Windows, or unusual C dependencies).

These stats are best-case scenarios that assume use of a most-compatible Cargo.lock file. Fresh projects without a lockfile will be less compatible due to too-new transitive dependencies.

Compatibility weighed by crates' popularity is not a realistic representation of ecosystem-wide compatibility. Actual compatibility is always worse, because MSRV of projects is not an average of their dependencies MSRV, but entirely dependent on their least-compatible dependency.

All crates, including unmaintained ones

Rustc	OK / No data / Broken deps / Incompatible
1.92
1.91
1.90
1.89
1.88
1.87
1.86
1.85
1.84
1.83
1.82
1.81
1.80
1.75
1.70
1.65
1.60
1.56
1.55
1.50
1.45
1.40
1.35
1.31
1.30

4000 most recently updated crates

Rustc	OK / No data / Broken deps / Incompatible
1.92
1.91
1.90
1.89
1.88
1.87
1.86
1.85
1.84
1.83
1.82
1.81
1.80
1.75
1.70
1.65
1.60
1.56
1.55
1.50
1.45
1.40
1.35
1.31
1.30

Usage of Rust versions based on crates.io traffic

This is based on crates.io request log data from the last week. This is not limited to real users, and includes automated traffic like CI. 89% of requests were from stable (non-nightly) Rust versions. Less than 0.1% of requests came from Rust versions older than 1.63.

This many crates.io requests…	0%	7%	45%	53%	64%	70%	75%	78%	82%	85%	86%	89%	90%	98%	98%	98%	99.6%	99.7%	99.8%
…use this stable version of Rust or newer	1.94	1.93+	1.92+	1.91+	1.90+	1.89+	1.88+	1.87+	1.86+	1.85+	1.84+	1.82+	1.79+	1.75+	1.74+	1.72+	1.70+	1.67+	1.63+
This many crates.io requests…	6%	7%	8%	9%	9%	10%	10%	10%	11%
…use this or newer nightly version of Rust	1.94+	1.93+	1.92+	1.91+	1.90+	1.89+	1.88+	1.87+	1.86+

Lib.rs › Stats