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 559.2 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 2.8× higher than during weekends (down from 2.9× a year before).

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

There are 54,493 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 211696 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
31928	17604	17986	19850	16337	13597	11767	9929	8737	7280

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
6128	5567	8568	6133	5075	3914	5603	3168	2923	1552	327	86	42	10	9
dtz-core cargo-cycles m3u_parser fox-dotfile safe_crypto	df_st_cli tray-item noem workspacer-add-new-crate-to-workspace valence_anvil	volcengine sp-crypto-ec-utils supasim-kernels bevy-atlas-loader tauri-plugin-axum	enprot rona omega-meta-sona gifclip wl-clipboard-rs	meteora-sol revaultd sudoku_machine finance-query-core maplibre_native	toon-lsp aws-sdk-account html-translation-lib prmpt aws-sdk-networkmonitor	ink_env swc_ecma_compat_es2015 piconbiere beleth rdf_utils	tanu-tui omicron-zone-package lol-core etwin_dinoparc_client koru-delta	atlas-transaction staticdatagen firewood rmcp gst-plugin-aws	re_view_spatial nu bbachain-program cw-it neuro-divergent	scirs2-io fastcrypto sequoia-openpgp clone-solana-accounts-db clone-solana-rpc	clone-solana-program arti deno_runtime_tauri hipcheck pgp	clone-solana-runtime neo3 solana-ledger arborium pallet-staking-async-parachain-runtime	kodegend zero4rs zawk pmat deno	apollo-router uhg-custom-appollo-roouter forest-filecoin homestar-workspace-hack solana-runtime

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
28867	22471	12893	6640	2340	2127	1336	547	257	167	96	127	74
occlum-sgx sov-stf-runner libunwind-sys pingap-otel emutil	dioxus-use-mounted pipelight_error baobao-manifest thisslime-core srb-trfc	submillisecond cetkaik_fundamental roughenough-protocol wasmer-types-x numbat-wasm-debug	ws2812-timer-delay pi_time web-view leo-ast carbon-macros	tetsy-bytes elasticsearch machine-uid icentral-errors mobc	cranelift-module cranelift kuchiki linked_list_allocator nostr tetsy-kvdb tonic-web-wasm-client comemo readonly typeshare	solana-reserved-account-keys tauri-winres pulldown-cmark-escape ndarray-stats rug datafusion-physical-plan crypto_secretbox rmcp async-graphql opentelemetry_api	ethbloom ruint arrow arrow-cast curl pango aws-lc-rs libflate rle-decode-fast solana-sysvar	objc2-quartz-core ash difflib tracing-serde tiff nu-ansi-term hyper-tls fs_extra simdutf8 objc2-ui-kit	rdrand litrs iovec hashlink aead proc-macro-error-attr2 kernel32-sys crossterm fuchsia-cprng os_str_bytes	foldhash cast bit-set iana-time-zone web-time memoffset matchers atty system-configuration-sys dirs-sys	rustc-hash paste rayon-core reqwest ppv-lite86 unicode-xid ahash zeroize glob arrayvec	gimli backtrace tracing js-sys percent-encoding mio windows_i686_gnullvm either redox_syscall base64

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
59606	40647	13215	24500	16648	19535	11085	11427	4862	2276	319
aws-unlock openvm-rv32-adapters anvil-liquid-derive insectbox exif-rs	haste-macro-loads simple-digraph mind_sdk_lb modifier_macro hashirama	poeledger-economy-data gpwg seaplane-oid daemon_console_lite pure-magic	salat_mv pipenet falco_schema_derive cgp-serde-typed-arena fromsoftware-dlrf-derive	mtf mpdclient-sys aws-ne-sys engula rsql_driver_delimited	moshi external_sort multiversx-sdk-http rasn-cdt theban_interval_tree	htmltoadf git2-hooks docsearch copy_on_write markup5ever_arcdom	polkadot-gossip-support vkrs postcard-derive soroban-ledger-snapshot rerobots	tokio-test flatc-rust base58 uds_windows ethcontract-generate	gstreamer-mpegts google-androidmanagement1-cli autocfg ffizer google-firebaseremoteconfig1	fern libloading mozjs_sys diesel 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
24715	16127	16492	23627	34033	26672	18912	14433	18512	9498	1099
infrarust webarcade-api lr_rust_shared_structs boreal-parser bevy_la_mesa	ekzg-trusted-setup nu_plugin_chipa_touch plex-api shift sha256sum	wow-blp vconfig_codegen html-translation-lib rustdoc-json-stable ngdp-cdn	egs-api glslt_cli tokenize_dir_macros saguaro gimbal_async_cargo	arelith_combat_simulator bin-it RustQuant_autodiff portable-alloc cameleon-genapi	crates-publish-minimal nsi-core qubaitian_hello_cargo piconbiere netget	chord-output embedded-hal-vcd hass-entity-state enum-conversion-traits lol-core	stabilkon totally-ordered pylon-utils nash-protocol voxel-game	min-id storages hash_ring iridium-md rbt	ripper jtable maman pathfinder_path_utils littlefs	pokereval mustache_view safe_launcher bip_htracker pokerlookup

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
8099	8267	11652	20850	34720	31331	23911	19308	27025	15939	3018
haste-macro-loads rom-analyzer omega-meta-sona bronzite-types webarcade-api	tutorio-stream calimero-dag anubis-rage physim-attribute structecs-macros	bred64 asic-rs secador-macro tauri-plugin-axum scalop	const-pkg-version livetrace paginator-utils luminos-container tokenize_dir_macros	reto bevyhub_core p2panda-store ant-libp2p-upnp sbus-rs	puteketeke rumor-server screeps-game-utils async_monad qubaitian_hello_cargo	group-varint-offset-encoding polkadot-gossip-support performant_encryption fast_async_trait vcard4	voxel-game adsbx_browser abstractapi any_terminal_size wasmer-vfs	better-as yttrium_std_database_exists revaultd displaythis scythe_paths	ripper paho-mqtt-sys proxy-switcher-tray-applet galois_2p8 winpty-sys	moreops neon netstring bip_dht cargo-tree

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
62998	49373	39774	26815	15120	4899	3422	1645	74
exif-rs anvil-liquid-derive insectbox aws-unlock openvm-rv32-adapters	parser-proxy-ws zigbee2mqtt_types_vendor_zen mind_sdk_lb rocket_anyhow unc-abi-client-impl	harness-probe-perf gcloud-kms maplibre_native haste-macro-loads aws-auth-payload	migratio glslt_cli hashirama validated rsjni	base62 gix-trace mozprofile design_token_parser parst_derive	pallet-staking-runtime-api gst-plugin-aws v4v debtmap dbui-controllers	logos semilattice-database-session castle_input_cursor webrtc-ice sqlx-rt-oldapi	mycelium-memory-db dtz alloy-json-rpc wasmtime-types aws-sdk-timestreamwrite	solana-cli-config solana-metrics rustc-ap-rustc_cratesio_shim swc_ecma_lints solana-logger

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
26024	9379	9588	7601	965	230	102	74	36	37	1
dgoodlad nakajima mountain knzconnor kouky	vic zacheryph raggi osslate schacon	robey antage marcoow melito jwiegley	joshua-mo-143 levicook aruiz agrover xenoterracide	kou bobbobbio yvan-sraka theduke marirs svc-pdk_sfemu hsivonen Narsil	aws h00gs GabrielePicco MaulingMonkey TobiasBengtsson dylanmckay danieldk Keruspe	franziskuskiefer divi255 bmbper ahaoboy ryankurte aatifsyed soareschen mangonui	doitian noahgift uutils bmwill dignifiedquire vertexclique PistonDevelopers ma2bd	vpetrigo atlaschainorg therustmonk Manishearth PsichiX artifact-byted howardwu RickWinter	suzmue googleapis aptos-crates Azure mingyang91 Wandalen microsoft-oss-releases rusoto

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
22410	70697	74940	13733	13267	3152	4909	973	39
yttrium_std_database_exists modifier_macro megabytes rust-ggm-test zigbee2mqtt_types_vendor_zen	volcengine lightbird haste-macro-loads aws-ne-sys cacheguard	lr_rust_shared_structs aws-auth-payload quarantine fixlite droid-wrap-utils	bridge-hub-test-utils tauri-plugin-m3 fusion-core tune-cli gravitron_renderer	opsqueue ghostflow parity-db findutils cooklang-import	dayendar wlambda keramics-compression aws-sdk-codepipeline awsctx	aws-sdk-config scirs2-integrate sdif-sys ch58x-hal mcp-muse	tablegen image_ascii rubullet-sys bot homie	librclone-sys dynamorio-sys re_web_viewer_server stm32-metapac ffmpeg4-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
32935	16916	8959	4875	2323	909	161	23	27
twine_builder eric-bindings revaultd	xwords arcis-internal-expr-macro clip_txt kaniop-group	nude temp-file dusk-wasmtime-runtime type_hash_macros dtt	solana-logger imap arraystring waffles-solana-zk-token-sdk mipidsi mutually_exclusive_features	wl-clipboard-rs bevy_reflect_derive sentry-contexts test-case-macros error-code docx-rs blake2s_simd	fsio ctr phf_macros toml_write curl gix-odb matchers snarkvm-parameters	lz4-sys console_error_panic_hook once_cell thiserror icu_segmenter_data icu_normalizer tonic blake3 nalgebra	itertools pyo3 libz-sys nix jiff image object rustls csv regex	windows_x86_64_gnu windows_i686_gnullvm libc windows_aarch64_gnullvm windows_x86_64_msvc regex-automata linux-raw-sys winapi-x86_64-pc-windows-gnu regex-syntax librocksdb-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
36967	1557	398	292

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
4778	2745	1225	577	538	157	41	20

TLS clients
rustls	native-tls	openssl
5986	2206	1779

git clients
git2	gix
1738	231

Loggers
log	tracing	slog
59742	33612	544

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
59394	35886	3083	2740	1758	1384

Argument parsers
clap	getopts	pico-args	argh	argparse
30009	1330	598	369	119

Markdown parsers
pulldown-cmark	markdown	comrak
1244	241	229

TOML parsers
toml	toml_edit	basic-toml
17756	10683	176

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
9405	5445	2037	1577	1102	154

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
57670	448	390	65	22

Parser generators
nom	pest	combine	peg	pom	lalrpop
11172	5427	2249	689	172	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
2712	2092	1106	344	95	32	24

Temp files
tempfile	tempdir
9578	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
1.79
1.78
1.77
1.76
1.75
1.74
1.73
1.72
1.71
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
1.79
1.78
1.77
1.76
1.75
1.74
1.73
1.72
1.71
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. 92% of requests were from stable (non-nightly) Rust versions. Less than 0.17% of requests came from Rust versions older than 1.66.

This many crates.io requests…	0%	2%	17%	42%	62%	68%	74%	76%	81%	86%	87%	90%	91%	98%	98%	99.1%	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+	1.78+	1.75+	1.74+	1.72+	1.70+	1.66+
This many crates.io requests…	2%	4%	5%	6%	6%	6%	7%	7%	7%	7%	7%	7%	8%
…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+	1.85+	1.84+	1.82+	1.78+

Lib.rs › Stats