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 360.5 million downloads in a single day, which is more than all downloads in the first 36 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 45,637 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 174954 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
28686	15534	15829	16866	13841	11176	9182	8006	6875	5765

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
4676	4386	6468	4603	3888	2653	3904	2191	1912	976	211	54	24	3	7
twstock push_the_elephant fox-dotfile m3u_parser safe_crypto	noem valence_anvil df_st_cli tray-item ragit-server	certo bevy-atlas-loader tumbleweed aws-auth-payload sp-crypto-ec-utils	docsearch digitalocean lsmlite-rs bevy_websocket_adapter enprot	crcnt_rbac heygpt wl-clipboard-rs sudoku_machine gis_puller	aws-sdk-networkmonitor gilrs-core synd-feed arendur google-cloud-asset-v1	azure_cosmos_sdk async-openai-alt rdf_utils plotly-fork bonsaidb-client	rumatui noble-staking glory-core tracing-opentelemetry lol-core	mwc_servers megra_rs staticdatagen maelstrom-broker cnidarium	rostrum nu fuel-vm dioxus-fullstack ex3-ic-agent	sequoia-openpgp tauri varlociraptor rnacos arti	lurk bitcoin-top miraland-core polkadot-parachain-bin opendal	homestar-runtime tina-core mise surrealdb-core-alpha deno_tauri	deno zawk coreutils	zigbee2mqtt-types polkadot-sdk homestar-workspace-hack uhg-custom-appollo-roouter apollo-router

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
23473	17809	10280	5514	1971	1656	1058	459	205	131	94	122	32
sov-stf-runner tomcrypt-sys emutil libunwind-sys regex-charclass	periodic-table-on-an-enum safe_app fern-proxy-interfaces m-helper mkentity	rasciigraph token-parser cetkaik_fundamental snarkos-algorithms pgx-tests	utf8path ayun-config plotlib gsl alloc-cortex-m	quicli macrotest fantoccini gnuplot iai	move-deps aptos-types cw-ownable solana-faucet pathfinder_geometry deno_unsync syslog gag opendal snarkvm-console-network-environment	annotate-snippets actix-testing jsonptr str_stack attribute-derive-macro aws-smithy-eventstream wasmprinter solana-derivation-path libp2p-swarm-derive gix-sec	wasm-bindgen-test ndk-glue local-waker uncased wasm-bindgen-test-macro objc2-metal embedded-io ena aws-smithy-http data-encoding-macro	polyval cargo_metadata libsecp256k1-gen-ecmult indenter libsecp256k1-gen-genmult cargo-platform hash32 proc-macro-error-attr2 libsecp256k1-core proc-macro-error2	void num-derive filetime ciborium-io iovec rdrand colored kernel32-sys bs58 tokio-rustls	ring vec_map humantime unicode-normalization foreign-types atty nix jobserver darling num-complex	walkdir fastrand semver chrono rustix want mime same-file crypto-common sha2	windows_i686_gnullvm regex-syntax serde_derive windows_i686_msvc thiserror bitflags wasi windows-targets num-traits smallvec

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
48983	32474	10935	20245	14190	16281	9275	9901	3550	1771	111
exif-rs yttrium_std_database_exists openvm-rv32-adapters aws-unlock dejavu	modifier_macro simple-digraph mind_sdk_lb hashirama rocket_anyhow	zigbee2mqtt_types_vendor_zen async_monad gabi packler vpb	rglw dbgtools-win scoop harness-probe-perf bitset-core	log4rs-syslog-net aws-ne-sys ps-pint16 googleapis-tonic-google-cloud-cloudcontrolspartner-v1beta terra-rust	rrgen molar_xdrfile check-if-email-exists-grpc fav_core external_sort	mendia rsass-macros metalmq-codec actix-postgres tasky	idcontain metriki-jemalloc metaheuristics-nature release-plz edwardium_logger	sp-trie comfy-table uds_windows dprint-plugin-markdown path-dedot	fallible-iterator frank_jwt sherlock base64-serde mdbook-epub	fern capnpc petgraph caseless lodepng

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
19074	12138	15097	19583	30939	21893	15377	12610	13804	6949	252
gcloud-kms nipdf-render mind_sdk_lb spitfire google-cloud-asset-v1	bevy_2delight_layers quarve_derive allegro_font ffizer icao-wgs84	hashirama wrpc-test grip-grab rpgpie-certificate-store tree-sitter-json	sledgehammer_bindgen_macro glslt_cli whackengine magicast nodedup	omnibox carlotk cashyalla_rpn_calc_test_ver stack_epic_p2p bonsai-rest-api-mock	orion-async-macros stylus abineo fenris-geometry hellosamp	harbor_rs gabi spaces awmpde_derive node_api_system	dalia git-heckout io-ranges mowl fluvio-controlplane	grammar_tool wasabi_leb128 log_wrapper samurai winpty-sys	the package ttk4145_elevator_server sleep-protocol can-utils	cyborg crdt cult intovec r18n

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
5132	5645	9225	17359	32374	26532	20167	17561	20336	12319	1066
gcloud-kms sigpipe-error azure_resourcemanager_chaos somose mpdclient-sys	tychoos grow_libsql aineed-cli regex_capture crabtoken	ragit-server angust reto hashirama icu_locale_data	eric-bindings uiua-nokhwa-core eloquence filepack rspack_fs	fav_core iced_video_player cashyalla_rpn_calc_test_ver krokiet glowdust	caffe2op-logit pink-runtime bigfloppa handoff polymesh-ink	libhdfs3-sys bgzf lnk-cryptovec dilate treasury-cli	piow simple-tlv wasmer-wasi-near tc-consensus-pow eaze-tracing-honeycomb	sp-serializer nakadi-types rusoto_managedblockchain io-arc catchr-core	ina260 spaces azure_cosmos_sdk ili9341 two-sided-vec	cyborg crc16 weakjson mm_image 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
51919	41419	32931	21860	11893	3798	2670	1171	55
exif-rs dejavu openvm-rv32-adapters aws-unlock yttrium_std_database_exists	statefun modifier_macro ffthumb zsync rename	seaplane-oid local-type-alias aws-auth-payload boreal-parser pcf857x-simple	ina260 amiquip nfc partiql-catalog rsjni	mozprofile azure_mgmt_deploymentmanager cyclonedds-rs strict_encoding_test simdutf	nash-protocol i-slint-compiler laze opencl3 apistos-core	tempfile soroban-ledger-snapshot dubp-block zng-ext-fs-watcher unimock	chirpstack_api snarkvm-wasm rdf-types aws-sdk-iottwinmaker reqwest	rustc-ap-syntax sctpx rustc-ap-arena oni-comb-parser-rs 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
21811	7858	8096	6259	794	170	84	57	25	27
schacon nakajima Susurrus kouky canadaduane	raggi melito paulstansifer zacheryph deontologician	poshcoe Tristramg kivikakk jwiegley ebassi	tredoe aruiz swaits walkah romanz	marirs jondot Tpt legoktm hd-gmbh-bot rklaehn bfops birkenfeld	Berrysoft TobiasBengtsson camshaft arcnmx morr0ne tyleo phil-opp mintlu8	fafhrd91 robjtede losfair johnstonskj refcell mattsse zicklag kuviman	zippy erwanor rust-lang breathx mikevoronov folex embassy-rs demurgos	al8n holochain tony-iqlusion i18nsite miralandlabs strake piot howardwu	dtolnay benesch vkill codyoss awslabs parity-crate-owner sdroege kennykerr

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
21132	64364	56508	9159	9622	2422	3704	768	37
feat yttrium_std_database_exists limon-client pbbot http-field	ffthumb kdmapi sp-crypto-ec-utils aws-ne-sys approx_eq	simple-stream modyne-derive drt-price-aggregator-sc arg-kit grammarbot-io	thegraph-core npsimd spacetimedb-client-api gix-dir solarti-token-swap	ogam leo-lang rtran glulxe-sys neon	triton-tui simple_term_rewriter lpc13xx-pac miv-editor dayendar	render_readme nf-rated signalk-multidisplay icu_tool tauri-app-vue-example	tablegen khmercut dejavu cw-it alloy-consensus	deno_cli_lib_windmill wycheproof linux-sys ng-rocksdb 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
61083	33768	14519	6042	1984	718	91	14	21
enprot m3u_parser bevy-atlas-loader	butane catbox icu_unicodeset_parse google-cloud-asset-v1	wasmer-vfs near-stdx tomatrix dimensional_quantity ndarray-slice	qoaudio aws-sdk-lexruntime aws-sdk-account unpak bayespam dicom-parser	gstreamer-base normpath cardinality-estimator markdown crates-index cw-it fontdue	security-framework-sys gio icu_collator jzon snap wagyu-zcash-parameters-5 rapier3d-f64 quick-protobuf	serde_with rust-stemmers num-bigint proc-macro2 miniz_oxide bytes unicode-ident logos lz4-sys	regex-syntax rustix winapi windows_x86_64_gnullvm image windows_aarch64_gnullvm libz-sys plotters rustls k8s-openapi	windows_i686_gnu regex-automata librocksdb-sys encoding_rs ring libsqlite3-sys windows windows_x86_64_gnu linux-raw-sys winapi-x86_64-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
26618	1431	286	193

Web frameworks
tower	axum	actix-web	warp	rocket	poem	rouille	gotham
2737	1467	998	469	438	145	39	21

TLS clients
rustls	native-tls	openssl
4624	1891	1446

git clients
git2	gix
1294	146

Loggers
log	tracing	slog
48475	24719	502

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
42091	25339	3016	2023	1333	989

Argument parsers
clap	getopts	pico-args	argh	argparse
23280	1086	398	319	112

Markdown parsers
pulldown-cmark	markdown	comrak
926	173	144

TOML parsers
toml	toml_edit	basic-toml
13238	8214	139

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
6727	3993	1433	1427	628	121

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
42546	263	204	30	14

Parser generators
nom	pest	combine	peg	pom	lalrpop
8777	4175	1731	488	118	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
1950	1858	821	258	94	29	24

Temp files
tempfile	tempdir
7022	473

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
1.85
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
1.85
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 0.15% of requests came from Rust versions older than 1.65.

This many crates.io requests…	0%	4%	37%	52%	58%	62%	78%	92%	93%	95%	97%	99.4%	99.5%	99.7%	99.8%
…use this stable version of Rust or newer	1.87	1.86+	1.85+	1.84+	1.83+	1.82+	1.81+	1.80+	1.79+	1.77+	1.75+	1.70+	1.69+	1.67+	1.65+
This many crates.io requests…	4%	5%	7%	7%	8%	9%	9%	9%	9%	9%	9%	10%
…use this or newer nightly version of Rust	1.87+	1.86+	1.85+	1.84+	1.83+	1.82+	1.81+	1.80+	1.79+	1.77+	1.75+	1.70+

Lib.rs › Stats