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 410.7 million downloads in a single day, which is more than all downloads in the first 37 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 46,717 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 179961 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
29211	15766	16122	17320	14183	11474	9879	8298	7110	5942

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
4873	4499	6705	4740	3859	3024	4070	2283	1987	1033	218	59	23	4	8
workspacer-add-new-crate-to-workspace push_the_elephant fox-dotfile safe_crypto m3u_parser	noem df_st_cli tray-item ragit-server valence_anvil	tumbleweed bonsai-rest-api-mock insight-line certo zpowergraph	docsearch lsmlite-rs digitalocean enprot vpb	twine_builder crcnt_rbac revaultd ora-store-memory heygpt	fav_core gilrs-core solarti-stake-pool-cli libhans synd-feed	plotly-fork acuity-index-substrate rmcp tandem_http_client kailua_langsvr	gst-plugin-aws webrtc-ice mz_rusoto_core re_time_panel packler	aloe-transport megra_rs ryot compio-quic stm32g4xx-hal	cloudevents-sdk sn_networking tfrecord fuel-vm save_my_code	entropy-tss buttplug arti r-u-still-there samply	c2pa linera-service deno_node hbros-solana-program surrealdb-sql	staging-kusama-runtime veilid-core surrealdb-core neo3 thousand_birds_deno	qsv zawk coreutils deno	aloe-exports uhg-custom-appollo-roouter apollo-router zigbee2mqtt-types polkadot-sdk

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
24107	18445	10586	5626	2127	1755	1130	462	218	131	96	126	37
tomcrypt-sys snowbridge-outbound-queue-v2-runtime-api emutil libunwind-sys occlum-sgx	x-base flat_device_tree django-query srb-trfc rome_js_syntax	pgx-tests token-parser layout21utils soroban-token-sdk polywrap_msgpack	dvcompute_utils sys-mount unc-primitives ws2812-timer-delay redgold-schema	ark-algebra-test-templates carbon-core grid_2d cmd_lib x86	json-syntax ssri syslog deflate scoped-tls-hkt testing async_executors goauth custom_debug_derive uhlc	solana-stake-program libudev geographiclib-rs polars-compute lsp-types ethers-contract-abigen http-range rmpv gix-config libp2p-identify	plain aws-smithy-json aws-types pem-rfc7468 ethereum-types emath gio-sys const-fnv1a-hash jsonrpc-core integer-encoding	ark-poly ttf-parser document-features ark-serialize-derive glam rustc-hex byte-slice-cast sha-1 ref-cast flume	matches derive_more-impl ciborium-io rand_pcg bs58 csv-core async-executor utf-8 fxhash memmap2	darling half http-body-util num-bigint nix spin allocator-api2 derive_more foreign-types-shared untrusted	fastrand sha2 crossbeam-deque wasm-bindgen-futures time crossbeam-epoch walkdir clap_lex hyper tokio-util	thiserror-impl log regex-syntax num-traits windows_aarch64_msvc regex windows_x86_64_msvc hashbrown once_cell windows-sys

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
50346	33325	11548	20998	14492	16629	9479	10154	3752	1837	130
aws-unlock openvm-rv32-adapters exif-rs yttrium_std_database_exists insectbox	mind_sdk_lb hashirama simple-digraph rocket_anyhow modifier_macro	dir_contents grow_libsql tc-consensus-pow diesel_cockroach gabi	screeps-pathfinding kmail type_hash_macros bs62 rglw	yuexclusive_foo engula ubi-cli pcomb signal-gen-cjds66-lib	lwk_ledger poggers-derive theban_interval_tree iceoryx2-pal-concurrency-sync esdm-sys	humble-cli url-parse rsass-macros actix-postgres htmltoadf	pi_slotmap_tree paris criterion-macro i-slint-compiler marine	flatc-rust comfy-table cd sc-consensus-babe-rpc near-sdk	ascon vegas-lattice dilithium block-padding libpulse-glib-binding	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
20375	12964	15073	19510	30678	23483	15325	13179	14454	7274	375
screeps-game-utils koto_geometry workspacer-add-new-crate-to-workspace dobby-wrapper write_mode	zsync zeusd markovish somose rust-crates-mcnwr	bevyhub_core lightweight-mmap async_nursery iceoryx2-pal-concurrency-sync build-instructions	cargo-rpmstatus git2-hooks ncomm-utils whiskers-widgets harris_minigrep	mc-sgx-tstdc-sys any_all_workaround memcrab-cache bashrand fqn-estimator	lp-types dbusmenu-gtk3-sys rsam caffe2op-logit cargo-qaf	litebin macro_pub proc-lock-api fs0 polyrhythm	pandacan grpc-compiler game_state_machine spartan-codec wraptest	twiml minigrep_yibozhuang wagyu opensc-sys pathfinder_renderer	unwalk robin-derives snaptest simple-signal maildir-pack	appcore se_rs_ial text_writer google-cloudsearch1 mraa

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
5676	6651	9366	17219	32412	27731	20040	18316	21170	12709	1400
gtoml ferrishot_iced_renderer aliyah cacheguard refman	wingl azure_resourcemanager_chaos maplibre_native mind_sdk_lb somose	ant-libp2p-upnp expression-parser tracing-proc-macros-ink ant-service-management ferogram-macros	harris_minigrep rglw electrologica pjrt-sys libwfa2	magika-cli untwine_macros tree-sitter-rstml clock-bound-shm rusty_dl	ndarray-slice krab wasmcloud-provider-httpserver springtime-di-derive disk	ddc-enhanced-rs atsamv71j20 ragged-buffer hubpack_derive irv-traits	glslt_cli naphtha spartan-codec etwin_dinoparc_client evdev-rs-tokio	console_engine clap_derive-v3 rsyesql ink_env capsule	squark-macros vips bytes32 libpebble robin-derives	appcore freeimage error_def se_rs_ial multimap

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
53332	42729	33992	22322	12363	3876	2799	1217	60
aws-unlock openvm-rv32-adapters exif-rs insectbox yttrium_std_database_exists	statefun unc-abi-client-impl zsync mind_sdk_lb zigbee2mqtt_types_vendor_zen	egui-datepicker local-type-alias rusoto_pinpoint_sms_voice seaplane-oid harness-probe-perf	adflib ina260 hashirama ragit-server rsjni	aead funzzy googleapis-tonic-google-devtools-cloudtrace-v2 oven dusk-schnorr	http-cache-surf nash-protocol opencl3 atri_plugin ink_env	skim geekorm-cli pgrx vec-with-positions tuifw-screen-winapi	web30 dharitri-wasm-debug ckb-db raui-json-renderer oculante	rustc-ap-rustc_target solana-rayon-threadlimit swc_ecma_transforms_classes rustc-ap-arena advent-of-code

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
22341	8014	8290	6422	815	180	84	61	24	29	1
nakajima schacon ernesto-jimenez shanesveller fd	robey zacheryph michaelklishin michaelmelanson mudge	kivikakk copyleftdev bruno-delfino1995 inre tuffy	tredoe thijsc madninja petertodd gnosek	jondot jjl miniex a10y Keats TheWaWaR filmil VivekPanyam	ry wilsonzlin sam0x17 mintlu8 ashWhiteHat cramertj LukeMathWalker alecmocatta	snnsnn fluencebot robjtede rescrv fschutt AbstractSDK alloy-rs fafhrd91	PistonDevelopers folex demurgos erwanor gengteng mikevoronov matthiasbeyer rust-lang	fuel-service-user a-kenji-buildbot sunfishcode Manishearth Traverse-Research-CI-runner Dirbaio matthewkmayer strake	seam345 MaterializeInc Azure newpavlov azure-sdk awslabs heaths aptos-crates

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
21281	65053	59501	9677	9996	2515	3851	777	39
zigbee2mqtt_types_vendor_zen rust-ggm-test feat pbbot http-field	jams-proto io_tee volcengine tumbleweed papito_codegen	aws-unlock simple-stream quarantine smol-macros valkey-module-macros	npsimd rgx milf dtt rmcp	pthash acceptxmr kube-client gaze nam-reddsa	font-awesome-as-a-crate proxyboi typer kn-cuda-eval miv-editor	guessing_game_1732891 rosesong ch58x-hal telraam-rs signalk-multidisplay	chadgpt rod silly-png variantkey run-clang-format	efm32wg-pac wandio-sys difftastic librclone-sys deno_cli_lib_windmill

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
60895	31952	14242	6073	2009	734	105	18	21
crcnt_rbac krab fox-dotfile	gcloud-kms portunes binper reflexo-vec2sema	pinentry darrentsung_debug_parser pin-weak grdf arendur	tofas risc0-zkvm-platform quad-net progenitor-client ncmc gnostr-bins	polars-sql proc-macro2-diagnostics intrusive-collections aicommit measurements datafusion-datasource gstreamer-video	predicates flexi_logger kube-core zerofrom-derive trust-dns-resolver web-time thrift simdutf8	tracing log brotli-decompressor parquet metal ryu webview2-com-sys hkdf bitflags	windows_i686_gnullvm zstd-sys regex winapi windows_aarch64_gnullvm image k8s-openapi hashbrown brotli libz-sys	linux-raw-sys windows_i686_gnu syn winapi-x86_64-pc-windows-gnu windows_x86_64_gnu v8 windows-sys regex-syntax windows_x86_64_msvc tokio

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
27654	1467	305	205

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
2932	1548	1025	503	481	149	39	21

TLS clients
rustls	native-tls	openssl
4819	1939	1515

git clients
git2	gix
1323	149

Loggers
log	tracing	slog
50381	25898	505

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
44343	26251	2892	2141	1345	1036

Argument parsers
clap	getopts	pico-args	argh	argparse
24096	1102	416	328	113

Markdown parsers
pulldown-cmark	markdown	comrak
959	177	145

TOML parsers
toml	toml_edit	basic-toml
13780	8741	142

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
6955	4151	1502	1478	670	123

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
44532	346	212	31	14

Parser generators
nom	pest	combine	peg	pom	lalrpop
8993	4399	2114	512	124	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
2005	1931	871	268	94	29	24

Temp files
tempfile	tempdir
7357	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. 89% of requests were from stable (non-nightly) Rust versions. Less than 0.22% of requests came from Rust versions older than 1.62.

This many crates.io requests…	0%	4%	34%	56%	68%	71%	73%	90%	92%	93%	94%	95%	96%	98%	99%	99.4%	99.6%	99.7%
…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+	1.79+	1.78+	1.76+	1.75+	1.70+	1.69+	1.67+	1.65+	1.62+
This many crates.io requests…	3%	4%	5%	9%	9%	10%	10%	10%	10%	10%	10%	11%
…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+	1.79+	1.78+	1.76+

Lib.rs › Stats