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 443.3 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 46,453 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 178917 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
29220	15691	16063	17159	14078	11409	9787	8223	7051	5887

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
4829	4479	6657	4709	3789	2994	4023	2257	1989	1021	217	56	26	3	8
fox-dotfile safe_crypto workspacer-add-new-crate-to-workspace m3u_parser push_the_elephant	valence_anvil df_st_cli noem ragit-server tray-item	bonsai-rest-api-mock qrs sp-crypto-ec-utils tumbleweed volcengine	lsmlite-rs spitfire piow digitalocean enprot	wl-clipboard-rs angust heygpt ora-store-memory revaultd	solarti-stake-pool-cli google-cloud-asset-v1 aws-sdk-account fav_core synd-feed	butane krokiet aiscript-runtime bonsaidb-client polysig-client	tracing-opentelemetry omicron-zone-package tuftool dusk-wasmtime-runtime etwin_dinoparc_client	celestia-grpc csvs_convert git-prole cnidarium tarpc	taganrog websocat sn_networking ex3-ic-agent wry	pict-rs arti datafusion buttplug stm32f4xx-hal	miraland-core nebulous bitcoin-top serde_dynamo lurk	nu-command spacetimedb-core deno_tauri staging-kusama-runtime polkadot-service	coreutils zawk deno	zigbee2mqtt-types uhg-custom-appollo-roouter aloe-exports homestar-workspace-hack 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
23932	18275	10536	5594	2116	1763	1121	462	215	130	96	126	37
libninja_mir emutil occlum-sgx snowbridge-outbound-queue-v2-runtime-api sov-stf-runner	http-manager m-helper safe_app yewdux-middleware aoe2rec	nvim-rs soroban-token-sdk jsonrpc-tcp-server snarkos-algorithms kalosm	farmfe_toolkit async-fn-stream plotlib tktax-transaction tet-libp2p-core	safecoin-sdk capstone diesel-async cmd_lib quicli	iroh-metrics base62 ssri ink_prelude syslog aptos-types noodles-core deflate test-strategy uname	diesel_table_macro_syntax ethers-middleware fraction actix-testing retain_mut c-kzg lsp-types solana-stake-program libp2p-yamux gix-config	sqlx-macros-core trust-dns-proto prometheus ndk-glue objc2-cloud-kit aws-types objc2-ui-kit emath tokio-test aws-smithy-json	ref-cast rustc-hex simba flume sha-1 futures-timer embedded-hal bech32 hash32 strsim	fuchsia-cprng iovec ciborium-io ciborium-ll rand_pcg bs58 filetime utf-8 kernel32-sys fxhash	untrusted allocator-api2 ring android_system_properties foreign-types-shared half atty num-complex libm nix	crossbeam-deque want wasm-bindgen-futures anstyle num-integer crossbeam-epoch async-trait semver tower-service rand_chacha	itoa smallvec rand_core windows_x86_64_msvc ryu num-traits windows-sys log windows-targets windows_i686_msvc

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
50501	33216	11183	20637	14365	16523	9413	10113	3730	1818	126
aws-unlock insectbox openvm-rv32-adapters exif-rs yttrium_std_database_exists	modifier_macro mind_sdk_lb rocket_anyhow hashirama simple-digraph	lightbird approx_eq send_cells vpb gpwg	harness-probe-perf regex_capture serde_skip torq_lang fundamentum-iot-mqtt-proto	iced_video_player libappstream signal-gen-cjds66-lib rustronomy-fits tree-sitter-arduino	cardinal-paid-claim-approver valence_anvil theban_interval_tree rusty_analytics xbgdump	netgauze-bgp-pkt cargo-credits crlify combination mz-avro	rerobots metriki-jemalloc trillium-http regecs-codegen http-cache-surf	tokio-test serde_at im flat_map ethcontract-generate	directories crossbeam-deque frank_jwt include_dir detect-desktop-environment	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
20493	12674	15013	19452	30607	23163	15301	13135	14260	7185	342
icao-wgs84 markovish rflex wl-clipboard-rs gcloud-kms	nom-parse-macros somose synd-feed zeusd tktax-in-and-out-of-range	embedded-websocket omicron-zone-package webrtc-ice url_handler openvm-rv32-adapters	screeps-pathfinding regview partiql-catalog ecs_helpers leptos-qr	nonstdfloat bashrand mown papa local-type-alias	kosh protoc-gen-prost-utoipa max_values pallet-crowdloan-rewards rsam	actix-postgres oasiscap navigator atsamv71j20 lnk-cryptovec	mando async_destruction tetsy-libp2p-uds capsule node-filter	xpsupport numero-por-extenso flat_map twiml txp	unwalk the liar simple-signal tokio-watchdog	jlens encoding-index-simpchinese rust-graph reminisce seax

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
5853	6284	9420	17181	32328	27425	20031	18252	20913	12616	1322
byted-jwt twine_builder cacheguard icentral-workspace axum-wist	tcp-echo-client google-cloud-asset-v1 astd nipdf-render tktax-in-and-out-of-range	marching_squares_wgpu ant-libp2p-upnp rengrep openvm-rv32-adapters polkadot-runtime-releaser-lib	filepack leptos-qr mnnrs patchable-async-sleep rglw	rpgpie-certificate-store jaredh159-test-adder-cli regiter_secrets flagged unc-abi-client-impl	air-beautifier netgauze-bgp-pkt lazyrand simperby-core canda	fs0 valkyrie-error mdbook-pagetoc nuttx-embedded-hal tantivy-analysis-contrib	async_destruction there-i-fixed-it ohys-api glslt_cli etwin_dinoparc_client	noting jqdata-model criner-cli porigon todo_web_server	tracing-allocator outils bytes32 qcgpu tail	jlens tempfile unicode-segmentation libarchive-sys lines

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
53467	42180	33627	22212	12253	3846	2773	1208	59
insectbox openvm-rv32-adapters yttrium_std_database_exists exif-rs aws-unlock	zigbee2mqtt_types_vendor_zen mind_sdk_lb rename unc-abi-client-impl ffthumb	validated egui-datepicker boreal-parser emoji valkey-module-macros	qingke-rt synd-feed embedded-websocket adflib sbat	imag-bookmark mozprofile textcanvas funzzy googleapis-tonic-google-devtools-cloudtrace-v2	libpq ink_env nash-protocol v4v tokio-macros	tuifw-screen-winapi geekorm-cli turbocommit os_info roqoqo-quest	dep-obj oculante retrom-plugin-launcher intuicio-plugins raui-json-renderer	myutil rustc-ap-serialize swc_ecma_codegen spider_utils sctpx

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
22229	7976	8223	6386	805	180	84	61	23	29	1
canadaduane ernesto-jimenez nakajima schacon kouky	raggi michaelmelanson deontologician mudge michaelklishin	stefanoc joshrotenberg jschanck emkay penryu	daaku lsegal thijsc rebo ggriffiniii	yvan-sraka jjl automation-wasmcloud TheWaWaR upsuper marirs amandasaurus labra	tyleo phil-opp mintlu8 sam0x17 BrantBrown porky11 alecmocatta LukeMathWalker	djc snnsnn fluencebot refcell robjtede bmbper casey Xuanwo	ma2bd boozook breathx jamesmunns gengteng rivy gkgoat1 bmwill	holochain strake Traverse-Research-CI-runner matthewkmayer yoshuawuyts miralandlabs therustmonk fuel-service-user	azure-sdk aws-sdk-rust-ci Azure kennykerr paritytech coryan vkill piot

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
21342	64805	58909	9565	9874	2490	3828	773	39
simple-digraph modifier_macro feat rust-ggm-test openvm-rv32-adapters	approx_eq date-calc-rs rocket_anyhow grrs-cli aws-ne-sys	memadvise aead quarantine fxp_clutter gpwg	dtt sixtyfps-lsp wasmer-wasi-near npsimd rgx	ft2 glulxe-sys neon findutils ryot	proxyboi pq-src centerline cherrybomb-swagger spyparty	rosesong signalk-multidisplay egui_material_icons openapitor kbnf	vuk ubits silly-png bevy_crt clfft	efm32gg-pac musix difftastic mupdf-sys linux-sys

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
60040	30391	13797	5898	1998	760	106	18	23
zsync packler aws-auth-payload	mpdclient-sys intuicio-framework-text reflexo-vec2sema criner-cli	sway-ast lectionary darrentsung_debug_parser azure_mgmt_streamanalytics gfx_gl	objc2-symbols is_utf8 anchor-spl qoaudio rogcat buildlog-consultant	intrusive-collections lingua-georgian-language-model test-case-macros protobuf-support libvips gix-trace argon2	rustybuzz poem-openapi im quick-protobuf gix-pack ijson wayland-client opentelemetry-datadog	lzma-sys rust-stemmers brotli-decompressor parquet proptest crossbeam-channel webview2-com-sys bitflags moka	itertools windows_i686_gnullvm windows_x86_64_gnullvm image plotters zstd-sys windows_aarch64_gnullvm petgraph librocksdb-sys web-sys	libz-sys ring tokio windows_x86_64_gnu windows-sys regex-syntax winapi-x86_64-pc-windows-gnu openssl-src windows_aarch64_msvc winapi-i686-pc-windows-gnu

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
27403	1456	305	204

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
2889	1528	1022	504	476	152	39	21

TLS clients
rustls	native-tls	openssl
4774	1939	1592

git clients
git2	gix
1318	148

Loggers
log	tracing	slog
49878	25680	503

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
43883	26010	2883	2113	1349	1015

Argument parsers
clap	getopts	pico-args	argh	argparse
23905	1095	407	328	113

Markdown parsers
pulldown-cmark	markdown	comrak
951	174	145

TOML parsers
toml	toml_edit	basic-toml
13654	8623	139

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
6884	4094	1487	1455	655	122

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
44123	343	212	31	14

Parser generators
nom	pest	combine	peg	pom	lalrpop
8960	4371	2065	508	124	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
1998	1922	864	265	94	29	24

Temp files
tempfile	tempdir
7296	478

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. 90% of requests were from stable (non-nightly) Rust versions. Less than 0.19% of requests came from Rust versions older than 1.65.

This many crates.io requests…	0%	3%	27%	57%	70%	72%	75%	92%	93%	94%	97%	99.2%	99.4%	99.6%	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+
This many crates.io requests…	3%	4%	5%	7%	8%	9%	9%	9%	9%	9%	10%
…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+

Lib.rs › Stats