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 244.0 million downloads in a single day, which is more than all downloads in the first 30 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 43,506 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 166500 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
27571	15009	15200	16129	13101	10623	8716	7527	6574	5404

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
4419	4114	6036	4208	3672	2454	3649	2006	1775	889	177	52	22	3	7
ruuvitag-upload pubky-app-specs mongodb-gridfs systemd_socket futures-enum	arrow-digest cosmic-cli tembo-telemetry epsilonz fabric-system	tencent-qcloud-cos-rs archid-marketplace parrot-network kcheck gh-config	ida oxidate frame-system tower-sessions-surrealdb-store linkcheck2	flowcrafter rrdnsd crows-wasm imag-link cargo-index-transit	mavryk_crypto_rs cueball-dns-resolver steel-engine passcod-accord hmip721	hifitime bbcli halo2-wasm turn-server progenitor-impl	scl-core payjoin-cli manas_authentication voxelize s2n-quic-core	product-os-browser i-slint-renderer-skia keri bastion wasmut	tfhe rocketmq-broker git-next pavex axiom-eth	palpo stm32f4xx-hal cairo-native ibc-relayer alloy-provider	opendal pingap liboxen miraland-core rattler-build	surrealdb-core-beta qsv westend-runtime thousand_birds_deno surrealdb-core	zawk coreutils deno_lib	zero4rs apollo-router zigbee2mqtt-types polkadot-sdk 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
22339	16952	9756	5223	1779	1606	952	446	191	130	80	121	28
cmsis_dsp_sys_pregenerated grex earthwyrm notion-async-api qm-role-build	onlivfe auditable-serde ffi pentacle moq-native	wikipedia ssdp paste-test-suite handsome_logger lox-math	arrayfire aws-sdk-cloudformation audio-processor-traits zookeeper nameof	tc-client-api tree-sitter-highlight cmd_lib tetsy-keccak-hash rp2040-boot2	pbjson-build diffy wax iri-string metrics-exporter-prometheus tetsy-kvdb web3 cw-ownable reqwest-tracing vulkano	polars-core onig_sys parquet polars-utils actix-testing bimap manyhow jsonrpsee simd-abstraction linkme	ndk-glue unicode-linebreak loom glib enumflags2 ena serde-wasm-bindgen pyo3-build-config plain smartstring	windows-interface dunce predicates-core env_filter winit ark-serialize predicates-tree ark-std ark-ff-macros ark-ff-asm	der tokio-rustls os_str_bytes const-oid approx csv bstr async-task polling csv-core	hmac env_logger num-bigint winreg windows-core toml_edit atty vec_map valuable num-rational	core-foundation-sys crypto-common hyper httparse fastrand linux-raw-sys same-file socket2 chrono http-body	libc bitflags windows_i686_gnu windows_x86_64_msvc windows_i686_msvc serde_derive autocfg cfg-if serde_json memchr

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
46704	30816	10462	19650	13257	15351	8726	9395	3269	1685	22
oxidate boing-internals yesqlr blackjack_commons ya	console-codes pubky-app-specs static-self-derive group-varint-offset-encoding cargo-vistree	ggez_tools indentasy impc reddit-fs dreck	ruuvitag-upload proc_include_dir_as_map ceres-derive cosmic-cli yobot	portman_client resources genesis-impl basejmp pjs-rs	oxidux fuel-gql-client pyo3-pack guswynn-test-dep num-digitize	kdump yelp-fusion-rs cfonts oml-game deno_bindgen_macro	gogo pause_console quire twiddle vertigo-macro	css-color bytelines rust-fsm-dsl trie-rs ntcip	block-utils e310x dynamic_reload google-bigquerydatatransfer1 antikoerper	capnpc fern xml-rs bloomfilter flate2

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
17577	13103	12736	20150	30204	20135	15102	11585	12426	6234	85
cnidarium n32g4xx-hal tower-sessions-surrealdb-store typos-cli polars-rows-iter-derive	pyo3-object_store mathcat linkcheck2 google-displayvideo1 googleapis-tonic-google-maps-unity	cargo-codspeed workflow-rpc-macros sqlr evalr lhtlp	koto_regex AlankuoRust ipld-dagpb busstop spawn64	hexfloat2 proc_include_dir_as_map rsn-fmt tag_nominatim mldkyt-uwurandom-rs	cosmic-cli kakasi rustiny_fixed_point lunatic-db fields-iter-macros	uris plonk-pallet-rpc rodio-xm hnapi pakr-assert-size	ref_clone drone-tisl-map-svd pi_ir_remote test-impl tts_winrt_bindings	dotecnf socket-priority batch_resolve_cli ghcl myls	intercom-utils bowling liner noise_search_deps_rocksdb nakacli	char_set rusql integer_set pyltime msgpack

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
4472	5674	9128	17087	32180	24302	19612	16494	18532	11305	551
revm-trace examination core-test-3 zensical stuckliste-cli	linkcheck2 tangu-cli bitnet-cpp-sys intervalues_pyrust minaws	evalr usb-mc treesitter_kind_collector field-visibility protex	zng-ext-hot-reload trident-test ark-ff-asm-zypher steel-engine gin-tonic	rusty_utils sisyphus-tasks structified_enum rsiot-component-core minotari_mining_helper_ffi	c-at-e-file-server movey-core lunatic-db ilog odra-casper-codegen	pylon-utils miden-verifier devcleaner time-humanize simple-ll	rexl sofa-sys polyhorn-test obsidian-export shyfyr	budget duplexify myls gt-graph-path howlong	shmemfdrs drdns riscv-rt relexer-derive foursquare	fuse fern_macros racc netaddr char_set

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
49557	39398	31342	21019	10803	3667	2636	863	52
yesqlr fbnc ya boing-internals blackjack_commons	systemd_socket cargo-vistree pubky-app-specs group-varint-offset-encoding console-codes	libsecp256k1-core core-test-3 lazyc markdown_converter bfind	cosmic-cli threescalers rsocket_rust_transport_tcp unreal-doc leptos_form	uwl cargo-no-dev-deps mpstthree futures-enum google-cloudasset1	sass-sys huawei-cloud-api-definitions-IEF ink_engine git-actor alloy-provider	fimg rasn-mib risc0-build-kernel elastic_types deno_canvas	aws-sdk-appsync aws-sdk-firehose wasm-bindgen-cli-support mungos aws-sdk-appconfig	rustc-ap-arena rustc-ap-rustc_errors rustc-ap-serialize swc_ecma_codegen swc_ecma_parser

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
20824	7474	7700	5965	747	164	76	57	18	24
fd shanesveller schacon canadaduane ernesto-jimenez	zacheryph raggi robey deontologician khyperia	bjc kivikakk joshrotenberg oleganza marcoow	ggriffiniii swaits srid walkah romanz	yvan-sraka filmil poljar legoktm nbari labra jjl chifflier	dylanmckay wilsonzlin Berrysoft LPGhatguy refcell tyleo ForsakenHarmony rust-embedded	robjtede fafhrd91 gkgoat1 denobot sudo-shashank ryo33 Michael-F-Bryan bbqsrc	mikevoronov uutils matthiasbeyer unicode-org rivy rust-lang yayanyang folex	Traverse-Research-CI-runner mingyang91 Manishearth vpetrigo sunfishcode howardwu strake kayabaNerve	aptos-crates Azure newpavlov kdy1 vkill dtolnay oovm sdroege

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
20516	63095	51926	8245	9008	2288	3510	715	34
zenoh-backend-sql resx redispatch aeron-archive-client chainlink_api	optional_take stara group-varint-offset-encoding yobot wallet-app	cxx-clang-auto print_bytes standalone-quote nova-r8 arrow-digest	threescalers json5format lares vbscript derive-adhoc	threepm solana-stake-o-matic rbspy-oncpu mysql_async k8s-crds-cilium	sui-crypto botapi gaviota-sys curve25519-dalek-organism localghost	multiboot2-common cfn easy-alias luajit-src lingua-indonesian-language-model	webots-bindings elfkit ratatui-image my_tools clfft	wolfssl-sys bpe-tokenizer esp-wifi-sys efm32wg-pac efm32gg12b-pac

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
59526	31342	13126	6656	2014	551	68	12	17
picocolors term_cursor bfind	unhtml_derive cosmic-cli reddit-fs timed_set	safe-mac-cli type-sitter-cli stac-duckdb totp-lite huawei-cloud-api-definitions-iDMEClassicAPI	picosakura adbyss_psl smallbitvec libp2p-mplex typesize wasmer-wasix-types	lingua-french-language-model peng_quad rust_ev_crypto_primitives gix-discover pbr rusteron-client ipc-channel	envmnt wgpu-hal rand_distr robust unicode-xid secp256k1 hashers oculante	unicode-normalization reqwest aws-sdk-s3 protobuf-src time http-types curve25519-dalek proc-macro2 tokio-util	image regex-syntax brotli rustix libz-sys tokio syn windows_aarch64_gnullvm librocksdb-sys winapi	libc linux-raw-sys v8 ring windows windows-sys winapi-i686-pc-windows-gnu encoding_rs openssl-src windows_x86_64_msvc

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
24531	1435	261	173

Web frameworks
tower	axum	actix-web	warp	rocket	poem	rouille	gotham
2439	1292	948	460	432	141	38	21

TLS clients
rustls	native-tls	openssl
4109	1814	1460

git clients
git2	gix
1224	132

Loggers
log	tracing	slog
45928	22682	500

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
38811	23676	2996	1820	1218	924

Argument parsers
clap	getopts	pico-args	argh	argparse
22073	1049	357	289	108

Markdown parsers
pulldown-cmark	markdown	comrak
874	166	142

TOML parsers
toml	toml_edit	basic-toml
12396	7475	100

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
6311	3629	1548	1394	532	118

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
39728	243	176	25	14

Parser generators
nom	pest	combine	peg	pom	lalrpop
8451	3935	1750	462	106	25

XML parsers
xml-rs	quick-xml	xmlparser	xml5ever	libxml	rxml	elementtree
1815	1782	756	235	93	28	24

Temp files
tempfile	tempdir
6497	466

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
1.83
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
1.83
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. 87% of requests were from stable (non-nightly) Rust versions. Less than 0.29% of requests came from Rust versions older than 1.65.

This many crates.io requests…	0%	7%	44%	52%	74%	82%	89%	90%	93%	95%	96%	98%	99%	99.1%	99.3%	99.7%
…use this stable version of Rust or newer	1.85	1.84+	1.83+	1.82+	1.81+	1.80+	1.79+	1.78+	1.76+	1.75+	1.73+	1.70+	1.69+	1.68+	1.67+	1.65+
This many crates.io requests…	6%	7%	7%	9%	9%	12%	12%	12%	13%
…use this or newer nightly version of Rust	1.85+	1.84+	1.83+	1.82+	1.81+	1.80+	1.79+	1.78+	1.76+

Lib.rs › Stats