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 2.0× per year.

crates.io has served 149.5 million downloads in a single day, which is more than all downloads in the first 25 months since the release of Rust 1.0 in May 2015.

Traffic during weekdays is typically 2.8× higher than during weekends (up from 2.6× a year before).

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

There are 37,571 users or teams that have a crate on crates.io. The number of owners is growing at a rate of 1.3× per year.

Lib.rs has indexed 144544 crates.

Histograms

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
26589	13299	13376	13905	11203	8903	7261	6287	5560	4589

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
3630	3406	5105	3646	2766	2031	2814	1586	1435	687	113	39	11	3	5
async_ui_web_core bcc sp-version chatgpt_wd radior	azure_svc_keyvault bonfida-utils smb3_client azure_mgmt_hybridcloud hg-parser	pixstage sample_planning ruma-client-api mazter stronghold-stm	huawei_client autd3-geometry-viewer yarner google-firebaseml1-cli empath	remote-files cargo-watt hocon-linked minty simplehttp	rtw aws-sdk-docdb funes aws-sdk-b2bi streambed-kafka	ezno-checker xand-api-proto cronback-dispatcher-srv flnode mcai-workflow-editor	myc-core hoard-rs vulkano hedwig psp_security	music-player-webui cargo-contract ivy-graphics i-slint-renderer-skia hcaptcha	zbus tfhe shadowsocks-service tc-finality-grandpa freta	manas_repo_opendal rav1e solana-ledger holochain_types contracts-node	lurk bjsmiley-surrealdb apple-codesign wasmer-cli miraland-runtime	staging-kusama-runtime lingua deno westend-runtime mindustry-mod-v7	holochain zero4rs coreutils	apollo-router uhg-custom-appollo-roouter zigbee2mqtt-types forest-filecoin homestar-workspace-hack

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	≤20MB
64789	45064	6745	7222	1815	2667	641	51	11
hpl-macro-platform-gate beskar-assets speech-dispatcher-sys randomstringb r621	vmm parsley-rs mathew confik-macros rename-item	lwb-parser mqttwrk verbs-rs roxmltree hocon-linked	encoding-next-index-japanese quizler akiv bigtable_rs rquickjs-core	localghost kn-cuda-eval bevy_tilemap zfp-sys tree-sitter-elixir	delta_2a_lidar icu_tool gled polodb_core ttyper	forest-filecoin espa jabcode servo-skia libfsntfs-rs	librclone-sys snarkvm-parameters lief-sys musix jni-android-sys	esp-wifi-sys pv_leopard difftastic fbxsdk-sys rbspy-testdata

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
44924	34137	26996	17392	9083	3022	2063	587	45
beskar-assets json2pdf-client rust-calculator mz_rusoto_personalize_events closure_study	poly2tri-rs bryte_descriptor_attribute getter-derive-rs bi_channel rusty_state	uuid-generate ztop canadian_news_scraper r621 lingo	speech-dispatcher-sys big_enum_set_derive arpfloat rivet-identity range-encoding	aws-sdk-b2bi azure_svc_keyvault ghost iceyee_logger tokio-pipe	buildchain pulldown-cmark-to-cmark sass-sys liquid-core datachannel-sys	wild-doc-script pact-plugin-driver async-openai adbyss_psl postscript	surf_n_term kitsune_p2p_types glean-ffi validators is-semantic-release-configured	spider_cli myutil swc_ecma_transforms_proposal swc_ecma_transforms_module google-api-proto

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
4109	5629	8309	15924	28470	20809	18826	12954	15007	8212
mpdheart tfmt tower-request-id-nano vanitysol protopathy	cloudfront-logs golem-wasm-rpc kokoro-dynamic-plugin roxy_core david	simple_pg rai-core reluax amora-rs counter-cli	jpt hpl-macro-platform-gate genr fastxgz nodecraft	river-layout-toolkit binview sqlgen async-unsync redis-work-queue	cargo-dioxus u-siem-enricher igno unscanny rate-limits	actix_validated_forms_derive cardano_ouroboros_network nano-id build-data google-displayvideo1-cli	syntax-tree rawcmd_style sqlany-extfnapi minicov tokio-raw	mathew gysr postcard-cobs cryptonight str-macro	wc-grab app sivchain bigdecimal robots_txt

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
42529	26310	8906	16912	11289	13312	7642	7488	2657	1204
smb3_client beskar-assets json2pdf-client rust-calculator mz_rusoto_personalize_events	bi_channel strafe-consts tange-collection closure_study poly2tri-rs	bryte_descriptor_attribute romeo verbs-rs myxine-core kyber-kem	collective ceres-ri triadic-census trait_tests stm32f0x0	avr-config tea-orm pluto diem-json-rpc-types tower_allowed_hosts	arpfloat spider_worker commandext thousands amqp_serde	rnet-gen gst-plugin-rusoto spdlog-rs cargo-up cose-rust	build-data fibonacci_codec mupdf gettext-macros steamid-ng	junit-report til namaste rubbl_casatables google-admin1_directory	block-utils gmp-mpfr-sys antikoerper h2 serde_qs

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
15768	11963	11814	17965	26574	16915	14009	9488	9640	4113
verbs-rs libpath astro-float dcrs strafe-consts	google-firebaseml1-cli iceyee_logger bonfida-utils miraland-rayon-threadlimit test_cargo515	async-lock gfold htmlprep merge2_derive second-music-system	langbox smb3_client buildchain trans-flag async_ui_web_core	bspc-rs my-crate-kiana-123 caffe2op-prepend poly2tri-rs bitcoin-string	hugox bytey_derive dependency-tree-generator thread_local_compat env-searcher	rmem randomstringb bssl git-work gst-plugin-avi	ubiquity massdriver_gtk exonum-middleware-service javaclass-rs syntax-tree	celeste pleingres gregor cancellable-io spectacles-brokers	docker4rs grindstone dbus-bytestream ultimate-ttt tk-sendfile

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	≥250	≥500	≥750	≥1000	≥2500	≥5000	≥10000	≥15000	≥20000	≥50000
19033	14351	8289	4358	1460	1187	573	272	146	389	167	97	49	30	87	22
karabiner-driverkit dlpack-sys genetic-algorithm-tsp google-firestore1_beta1 actix-admin-macros	sn_interface tree-sitter-asm bulwark-config risc0-build fuzzydate	rasciigraph building_blocks_core aliri links_nonblocking cetkaik_fundamental	libp2prs-runtime benchmark-simple fugue mpd speculate	superslice tc-client-api shellwords etherparse serde_arrays	jsonrpc-core-client rppal temp-dir pallet-session staging-xcm-executor rust-format sprs simd-json loupe aptos-types	syntex_pos mt19937 jsonrpsee-core cudnn-sys term-painter eframe build_const flatbuffers caffe2-imports serde_ignored	paste-impl stacker spl-token-2022 sp-weights frame-metadata android_glue dissimilar aquamarine cosmwasm-schema librocksdb-sys	pyo3-ffi yup-oauth2 aws-smithy-http redox_termios x11-dl bevy_asset x11rb p256 hash-db shellexpand	bevy_macro_utils x25519-dalek memmap bevy_app glib-sys solana-program solana-frozen-abi config solana-frozen-abi-macro rpassword	blake3 fdeflate elliptic-curve simd-adler32 pkcs8 sha-1 md-5 async-global-executor quick-xml serde_cbor	kernel32-sys security-framework stable_deref_trait security-framework-sys iovec dirs allocator-api2 fuchsia-cprng strum sct	zerocopy clap_derive glob rustversion zeroize unicode-xid arrayvec env_logger toml_datetime powerfmt	pkg-config fastrand ahash toml core-foundation num_cpus rand_chacha mime hyper textwrap	http typenum socket2 idna futures-io errno url form_urlencoded chrono generic-array	cfg-if serde_derive syn quote windows_aarch64_gnullvm windows_aarch64_msvc bitflags memchr proc-macro2 autocfg

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
17915	6498	6702	5087	644	122	68	41	14	22	1
gregwebs fd robey kigiri canadaduane ernesto-jimenez	raggi marcoow Mange deontologician melito zacheryph	cablehead antage patrickt andy128k stefanoc srid	jedbrown pjenvey walkah alienscience leekalan tredoe	mintlu8 vl-mr-freeman astro maxbrunsfeld nbari That3Percent jjl filmil	Battula-anil-app-could phil-opp esp-rs BrantBrown arcnmx FredrikNoren muhammad-fiaz vercel	rise0chen FL03 pemistahl shamilsan huachaohuang jeremyBanks iliana sudo-shashank	matthiasbeyer richardanaya servo taiki-e gridbugs demurgos aspect uutils	mingyang91 cart vpetrigo a-kenji-buildbot Manishearth Traverse-Research-CI-runner btwiuse clearloop	aws-sdk-rust-ci parity-crate-owner kennykerr awslabs MaterializeInc sdroege seam345 RustCrypto

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
19364	1329	191	160

Web frameworks
tower	axum	actix-web	warp	rocket	poem	rouille	gotham
1766	924	817	406	365	125	33	21

TLS clients
rustls	native-tls	openssl
3368	1602	1196

git clients
git2	gix
1071	98

Loggers
log	tracing	slog
38422	17543	469

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
30807	19293	2919	1286	942	647

Argument parsers
clap	getopts	pico-args	argh	argparse
18568	904	271	247	101

Markdown parsers
pulldown-cmark	comrak	markdown
763	118	115

TOML parsers
toml	toml_edit	basic-toml
10422	4897	25

Binary encoders
bincode	prost	protobuf	rmp-serde	ciborium	capnp
5281	2376	1265	1060	287	103

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
32836	187	60	21	12

Parser generators
nom	pest	combine	peg	pom	lalrpop
6681	3295	1403	283	78	23

XML parsers
xml-rs	quick-xml	xmlparser	xml5ever	libxml	rxml	elementtree
1693	1377	642	202	89	25	24

Temp files
tempfile	tempdir
5104	431

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
1.77
1.76
1.75
1.74
1.73
1.72
1.71
1.70
1.69
1.68
1.67
1.66
1.65
1.64
1.63
1.62
1.61
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
1.77
1.76
1.75
1.74
1.73
1.72
1.71
1.70
1.69
1.68
1.67
1.66
1.65
1.64
1.63
1.62
1.61
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 requests

This is based on preliminary request log data. This is not limited to real users, and includes automated traffic like CI.

This many crates.io requests…	2%	3%	8%	37%	47%	68%	76%	78%	88%	91.8%	92.3%	93.0%	93.6%	94.8%	95.3%	98.5%	99.0%	99.0%
…use this stable version of Rust or newer	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+	1.55+	1.50+
This many crates.io requests…	0%	1%	1%	2%	3%	3%	3%	4%	4%	4%	5%	5%	5%	5%	5%	6%	6%	6%
…use this or newer nightly version of Rust	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+	1.55+	1.50+

Lib.rs › Stats