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 2.1× per year.

crates.io has served 434.6 million downloads in a single day, which is more than all downloads in the first 38 months since the release of Rust 1.0 in May 2015.

Traffic during weekdays is typically 3.0× higher than during weekends (up from 2.8× a year before).

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

There are 46,846 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 180528 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
29265	15807	16182	17367	14209	11510	9907	8331	7151	5956

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
4888	4532	6716	4761	3881	3038	4081	2294	2006	1038	217	59	23	4	8
m3u_parser fox-dotfile safe_crypto workspacer-add-new-crate-to-workspace push_the_elephant	noem valence_anvil tray-item ragit-server df_st_cli	volcengine zpowergraph bevy-atlas-loader qrs tumbleweed	lsmlite-rs well digitalocean certo vpb	heygpt gis_puller ora-store-memory revaultd regview	fav_core phonenumber-fixed solarti-stake-pool-cli libhans arendur	aiscript-runtime ant-service-management rdf_utils async-openai-alt polysig-client	noble-staking etwin_dinoparc_client butane packler exonum-testkit	maelstrom-broker compio-quic penumbra-sdk-num patchify megra_rs	dfx-core tag2upload-service-manager rostrum cw-it typos-cli	samply rnacos shotover torrust-index prest	deno_runtime_tauri lurk marrow bitcoin-top bjsmiley-surrealdb	wash mise polkadot-service tina-core homestar-runtime	qsv coreutils deno zawk	polkadot-sdk zero4rs uhg-custom-appollo-roouter aloe-exports forest-filecoin

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
24186	18497	10612	5656	2134	1761	1138	461	218	131	97	126	37
cuddle-please-commands libunwind-sys libninja_mir sov-stf-runner snowbridge-outbound-queue-v2-runtime-api	tracing-human-layer periodic-table-on-an-enum mkentity srb-trfc prisma	protect-endpoints-proc-macro ui_test jsonrpc-tcp-server sozu-command-lib lib3h_sodium	maelstrom-util canonical_derive automerge rusty-money tet-libp2p-core	crates_io_api embuild capstone meval kira	noodles-core crate-git-revision reactive_graph custom_debug_derive deflate polkadot-runtime-common memuse scoped-tls-hkt uname rand-construct	dsl_auto_type sp-timestamp gix-config libp2p-yamux io-extras libp2p-mdns ethers-middleware surf match_token solana-bn254	aws-smithy-json lexical-parse-integer thread-id memmap pem-rfc7468 trust-dns-proto ethereum-types schnorrkel gio-sys glib-macros	ark-ec matchit bech32 ttf-parser jpeg-decoder document-features glam widestring ref-cast sha-1	serde_yaml winapi-build iovec async-executor bs58 linked-hash-map kernel32-sys utf-8 matches rustls-pki-types	foreign-types allocator-api2 libm http-body-util opaque-debug humantime atty vec_map foreign-types-shared spin	want tower-service rand_chacha try-lock fastrand async-trait anstyle wasm-bindgen-futures clap_lex core-foundation	windows_i686_gnullvm windows_aarch64_msvc log regex windows_x86_64_msvc windows_x86_64_gnu windows_i686_gnu windows_x86_64_gnullvm windows_aarch64_gnullvm pin-project-lite

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	≤10 years
50465	33422	11631	21050	14561	16649	9528	10177	3770	1847	131
insectbox openvm-rv32-adapters exif-rs aws-unlock yttrium_std_database_exists	simple-digraph hashirama mind_sdk_lb modifier_macro rocket_anyhow	gabi gpwg light-control seaplane-oid caffe2op-logit	mu_rust_helpers rglw rust-macios-objective-c-runtime-proc-macros serde_skip salat_mv	yuexclusive_foo fp-evm mazer-cli gis_puller engula	welds-connections warp-request-body krokiet check-if-email-exists-grpc orn	mz-avro evcxr_image netgauze-bgp-pkt rsass-macros pretty-make	tree-sitter-r deltachat_message_parser trillium-http pi_slotmap pi_slotmap_tree	value-trait path-dedot syncat near-sdk cd	serde_tagged open_ai block-padding libpulse-glib-binding vegas-lattice	fern smallvec caseless lodepng rss

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	≤10 years
20288	13050	14160	20576	30731	23603	15311	13256	14560	7307	389
icao-wgs84 datafusion gcloud-kms m3u_parser ragit-server	lesbar-macros sudoku_machine serde_ssml futter zsync	atomiq-derive url_handler sula-alus huawei-cloud-api-definitions-EG ynab-api	azure_mgmt_advisor leptos-qr regview iceyee_error libappstream	subcryptor skely eigenlib fqn-estimator bbachain-program	paris cltodo ocl-include octocrate-api-builder canda	stable-swap-client tokio-snappy dnutils fs0 olympus	gst-plugin-srt tc-consensus-pow grpc-compiler tetsy-libp2p-uds pandacan	vkcargo chord-composer numero-por-extenso vex rsyesql	civet-sys tracing-allocator hike prefetchkit maildir-pack	simdop google-cloudsearch1 mraa soa keymaker

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	≤10 years
5619	6768	9326	17255	32406	27935	20047	18397	21284	12763	1431
fxp_clutter datafusion-datasource-json linera-wasm-instrument write_mode cacheguard	mpdclient-sys tw_merge_variants mind_sdk_lb ntdb_unwrap stellar_cli_wallet_lumen	mu_rust_helpers tracing-proc-macros-ink sula-alus openvm-rv32-adapters marching_squares_wgpu	terminal_rpg ddnet-accounts-types libwfa2 pmse-v8 edrv-ltr390uv	icao-wgs84 embedded-radio esdm-sys hyprkool mut_set	ua-job-parser memory_pages octocrate-api-builder publish-crates wasmcloud-provider-httpserver	mdbook-pagetoc taplo-plugin-crates litebin tantivy-analysis-contrib ragged-buffer	there-i-fixed-it ashmem eddn uriparser-sys etwin_dinoparc_client	cargo-minicov esp_idf_logger mown async_nursery rhuffle	stm32f2 uuidtoa wipe_buddy cfn rust_release_channel	simdop error_def sorter mraa string_cache_plugin

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
53459	42761	34224	22393	12371	3892	2845	1226	60
yttrium_std_database_exists aws-unlock exif-rs insectbox openvm-rv32-adapters	gcloud-kms ffthumb statefun unc-abi-client-impl zsync	aws-auth-payload libmseed-sys egui-datepicker harness-probe-perf validated	koto_geometry synd-feed approx_eq qingke-rt glslt_cli	af-move-type simdutf design_token_parser rucaja dusk-schnorr	apistos-core ink_env pyoxidizer v4v pleaser	cargo-udeps zng-ext-fs-watcher zng-wgt-container anchor-attribute-account flowcore	raui-json-renderer clap_complete catgirl-engine-server opentype dep-obj	solana-logger swc_ecma_transforms_testing spider_transformations swc_ecma_parser spider_utils

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
22401	8034	8318	6440	815	182	85	61	24	29	1
osteele schacon nakajima canadaduane knzconnor	zacheryph michaelmelanson robey paulstansifer deontologician	joshuaclayton foysavas scvalex joshrotenberg oleganza	kolektiv agrover aruiz zimbatm mpalmer	jpschorr miniex VivekPanyam legoktm automation-wasmcloud gavofyork upsuper Jasper-Bekkers	sneurlax matthunz LukeMathWalker ForsakenHarmony Protryon wilsonzlin ry dylanmckay	AbstractSDK Xuanwo fschutt rconan casey rise0chen losfair snnsnn	dsherret rerunio erwanor demurgos uutils zippy bmwill unicode-org	strake tony-iqlusion vpetrigo sunfishcode Dirbaio yoshuawuyts fuel-service-user RickWinter	newpavlov seam345 oovm piot dtolnay vkill madsmtm heaths

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	≤41MB
21288	65171	59795	9725	10045	2533	3855	780	39
openvm-rv32-adapters limon-client http-field yttrium_std_database_exists zigbee2mqtt_types_vendor_zen	volcengine jams-proto mockup_hal lightbird approx_eq	todoist-rs memadvise hashirama droid-wrap-utils gpwg	thegraph-core boreal-parser rgx milf xaynet-core	neon wordle_strategies ft2 eframe findutils	curve25519-dalek-organism cherrybomb-swagger miv-editor proxyboi triton-tui	tangle-subxt zinzen falcon-det-sys ch58x-hal libopenlipc-sys	run-clang-format rubullet-sys cw-it homie variantkey	ffmpeg4-sys ng-rocksdb kube-custom-resources-rs wolfssl-sys mysqlclient-src

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
61310	32577	14483	6214	2074	722	101	18	21
fox-dotfile drt-price-aggregator-sc rename	bp-asset-hub-rococo workspacer-add-new-crate-to-workspace hashirama cargo-credits	io_tee acuity-index-substrate lectionary linux-nvme-sys sudoku_machine	cargo-wix ntest leaky-bucket dcp gstreamer-gl-sys dicom-parser	polars-sql intrusive-collections datafusion-datasource aws-sdk-config tokio-retry gstreamer-video scrypt	security-framework-sys indoc aws-sigv4 arrow-ord thrift tonic-build lzokay-native serde_cbor	url brotli-decompressor bitflags serde_with zerocopy-derive tracing libm fiat-crypto metal	windows_aarch64_gnullvm hashbrown librocksdb-sys petgraph windows_i686_gnullvm rustls prost-build image libz-sys aws-lc-fips-sys	syn windows_aarch64_msvc ring libsqlite3-sys windows_i686_msvc linux-raw-sys windows regex-automata windows_x86_64_gnu openssl-src

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
27773	1463	306	208

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
2964	1568	1029	503	474	149	39	21

TLS clients
rustls	native-tls	openssl
4825	1942	1517

git clients
git2	gix
1327	150

Loggers
log	tracing	slog
50574	26007	505

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
44632	26363	2894	2149	1346	1039

Argument parsers
clap	getopts	pico-args	argh	argparse
24200	1103	419	329	113

Markdown parsers
pulldown-cmark	markdown	comrak
960	182	146

TOML parsers
toml	toml_edit	basic-toml
13819	8791	142

Binary encoders
bincode	prost	protobuf	rmp-serde	ciborium	capnp
6970	4173	1485	1470	673	123

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
44747	346	212	46	14

Parser generators
nom	pest	combine	peg	pom	lalrpop
9028	4412	2122	513	124	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
2010	1935	862	268	94	29	24

Temp files
tempfile	tempdir
7440	480

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
1.86
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
1.74
1.73
1.72
1.71
1.70
1.69
1.68
1.67
1.66
1.65
1.60
1.56
1.55
1.50
1.45
1.40
1.35
1.31
1.30
1.25

4000 most recently updated crates

Rustc	OK / No data / Broken deps / Incompatible
1.86
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
1.74
1.73
1.72
1.71
1.70
1.69
1.68
1.67
1.66
1.65
1.60
1.56
1.55
1.50
1.45
1.40
1.35
1.31
1.30
1.25

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. 86% of requests were from stable (non-nightly) Rust versions. Less than 0.16% of requests came from Rust versions older than 1.62.

This many crates.io requests…	0%	5%	38%	56%	70%	75%	78%	91%	93%	95%	97%	99.1%	99.2%	99.5%	99.7%	99.8%
…use this stable version of Rust or newer	1.88	1.87+	1.86+	1.85+	1.84+	1.83+	1.82+	1.81+	1.80+	1.78+	1.75+	1.70+	1.69+	1.67+	1.65+	1.62+
This many crates.io requests…	4%	5%	6%	11%	12%	12%	13%	13%	13%	13%	13%	13%	13%	13%	14%
…use this or newer nightly version of Rust	1.88+	1.87+	1.86+	1.85+	1.84+	1.83+	1.82+	1.81+	1.80+	1.78+	1.75+	1.70+	1.69+	1.67+	1.65+

Lib.rs › Stats