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 697.4 million downloads in a single day, which is more than all downloads in the first 44 months since the release of Rust 1.0 in May 2015.

Traffic during weekdays is typically 2.7× higher than during weekends (down from 2.9× a year before).

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

There are 57,043 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 224539 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
32982	18039	18585	20775	17191	14324	12472	10577	9375	7897

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
6641	6105	9448	6866	5667	3979	6661	3616	3296	1788	374	99	46	12	10
cargo-cycles safe_crypto fox-dotfile dtz-core m3u_parser	df_st_cli noem tray-item workspacer-add-new-crate-to-workspace valence_anvil	bonsai-rest-api-mock aws-auth-payload qrs bevy-atlas-loader claudekill	haagenti-streaming lsmlite-rs gifclip wl-clipboard-rs well	sudoku_machine regview revaultd maplibre_native rona	toon-lsp gilrs-core parser-proxy-ws xs-http migratio	papa beleth rigatoni-stores polysig-client aws-sdk-account	lol-core tuftool kvarn-quinn omicron-zone-package anubis-rage	compio-quic ryot pact_mock_server lumesh gst-plugin-aws	filesystem-mcp-rs bbachain-program acp-protocol terminator-rs hedl-mcp	deno_runtime fastatomstruct linera-execution penpal-runtime torrust-index	kcl-lib cargo tusktsk veilid-core clone-solana-program	atlas-ledger surrealdb-core westend-runtime arborium clone-solana-runtime	pmat uv qsv kodegend dioxus-cli	polkadot-sdk uhg-custom-appollo-roouter forest-filecoin gnostr 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
30787	24523	14009	7022	2508	2246	1439	594	268	175	120	123	76
occlum-sgx sov-stf-runner libninja_mir libunwind-sys cuddle-please-commands	safe_app vmix-core ninja-files-data2 bio_apis miniconf_mqtt	storeit_core sexprs-data-structures snarkos-algorithms bollard-next tucano-execution	bevy_kira_audio esp-rtos dvcompute_utils serde_any jacklog	boost_type_traits aws-sdk-bedrockruntime iai icentral-errors azure_storage_blobs	mod_interface kuchiki testresult defmt-rtt moddef zenoh-util linfa chashmap dasp_frame move-deps	qrcode actix-testing seqlock crc16 slog-async tree_magic_mini ethers-middleware wee_alloc wasmtime-versioned-export-macros substring	gdk-pixbuf bevy_render_macros schnellru scraper solana-stake-interface field-offset fontdb email_address solana-program-pack curl	sha-1 yaml-rust objc2-core-image notify doc-comment hyper-tls rusticata-macros bitmaps cassowary outref	lazycell hkdf os_str_bytes ctr indoc core-graphics-types serde_repr ndk-context objc async-stream	derive_more-impl system-configuration-sys criterion-plot vec_map fixedbitset plotters backtrace der num_enum num_enum_derive	paste mime glob ahash ppv-lite86 httpdate libredox hex rayon atomic-waker	stable_deref_trait futures-core windows_i686_gnullvm parking_lot base64 tracing-core percent-encoding equivalent tokio indexmap

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
63904	43962	14190	26040	17523	20163	11300	11834	5026	2438	445
openvm-rv32-adapters anvil-liquid-derive insectbox exif-rs aws-unlock	modifier_macro mod_rewrite simple-digraph mind_sdk_lb hashirama	gpwg hashtree-fs poeledger-economy-data lightbird tc-consensus-pow	daemon_console_lite geph4-vpn-helper salat_mv solana-instruction-view scoop	yuexclusive_foo wow-blp depyler-core polywrap_msgpack signal-gen-cjds66-lib	siwa cardinal-paid-claim-approver statum infrarust warp-request-body	salvo-cli disruption_types serde_json5 staticsort beep-evdev	trillium-http postcard-derive rust-embed-for-web-utils pi_slotmap acir_field	stack uds_windows lightspeed_email upnp-daemon base58	fallible-iterator rand_xoshiro ego volatile-register stm32l0	fern libloading imageproc djangohashers gitlab

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
31009	17187	17822	24668	33750	27268	19618	14465	19606	10147	1285
pipenet claudekill dtz-core kitmap gilrs-core	send_cells webarcade-api seqc wl-clipboard-rs cmw	tomlreadwr megabytes unen_logging fusion-core sha256sum	acuity-index-substrate validated entry_put_ext eots acme-engine	yesqlr build-instructions haqq-indexer-proto ferogram-macros world_id_sdk	parity_clippy_utils to_bopomofo bevy_lunex_ui http-rate vector-expr	crcnt_rbac pyoxidizer bevy_simple_2d_outline apple-ble cyclonedds-rs	amiquip tree-sitter-toml serde-csv-extra egui-datepicker substrate-subxt-proc-macro	odata_client_codegen inventorize update_channel futures-enum kkcloud-server	largest-remainder-method tar-parser lark-debug-with i2c-hal-tools mars_vga	joinlines silverknife-fontconfig-sys rusty-cute-macros cmdtaglib verex

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
11528	10626	12816	22070	34802	31924	24844	19681	28192	16950	3392
nym-credentials actix-security-codegen antistatic kitmap small_range	bronzite-types arborium-r dechdev_rest rlibc-extended rpgtool-common	rustlite cargo-ptest anubis-rage calimero-dag vello_sparse_shaders	exomizer mcp-diesel-proto-generator octocode shift ystd	af-move-type semaphore-rs-witness aineed-cli bevy_2delight_layers nom-parse-macros	tcp-client pax-engine include-utils-macro parity_clippy_utils cco	ffthumb ra_ap_intern brubeck multiversx-sc-wasm-adapter db_task	tongrams ctv uddsketch clgui simple-digraph	uu_csplit io-ranges hierarchical treemux sdfgen	hash256-std-hasher gdb_probe hp-log lark-debug-with futures-enum	joinlines silverknife-fontconfig-sys gettext tin wordnet_stemmer

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
67409	52416	42029	28294	15898	5314	3631	1758	76
openvm-rv32-adapters insectbox exif-rs anvil-liquid-derive aws-unlock	rename zigbee2mqtt_types_vendor_zen zsync mind_sdk_lb parser-proxy-ws	nom-parse-macros m3u_parser clock-bound-shm pcf857x-simple bevy_websocket_adapter	zakat-ledger pipenet bonsaidb-client smartcardhsm_pkcs11_loader plex-api	bevy_la_mesa sandbox-agent strict_encoding_test azure_mgmt_deploymentmanager design_token_parser	gix-tempfile papa cw-it miko-macros simple-stream	eastl-rs sqlx-ledger near-stdx byte-unit git-odb	rdf-types aws-sdk-appfabric databend-driver-macros skim base-d	solana-net-utils solana-stake-program solana-measure solana-rayon-threadlimit solana-sdk

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
27179	9830	9992	8038	1031	246	109	78	42	41	1
dfl caius corasaurus-hex knzconnor fd	zacheryph tzvetkoff fazibear raggi vic	lancecarlson bjc jamesturk pardel rictic	goxcc xenoterracide yury levicook typester	tobyhede jxoesneon asomers mre dherman birkenfeld apache FGRibreau	danieldk qy-upup Keruspe alecmocatta HeroicKatora joshrotenberg prestwich kaleidawave	rvolosatovs noamteyssier ahaoboy franziskuskiefer zeekay ryankurte foresterre snnsnn	Xuanwo nymtech vertexclique OpenTalk-Bot bartlomieju ma2bd unicode-org folex	matthewkmayer swc-bot PsichiX bytecodealliance wasmtime-publish fuel-service-user tony-iqlusion rust-lang-owner	Azure MaterializeInc azure-sdk coryan mattsse microsoft-oss-releases Wandalen suzmue

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
23051	72689	81007	15512	14850	3392	5235	1050	39
limon-client pbbot modifier_macro openvm-rv32-adapters zigbee2mqtt_types_vendor_zen	aws-ne-sys mind_sdk_lb easy_rdev_key ffthumb unc-abi-client-impl	anvil-liquid-derive simple-stream aws-auth-payload rocket_anyhow gc_abi	sapter bevy_touch_stick avx-gis-desktop rgx rustedbytes-counterlines	gaze rtran x64 tauri-plugin-secure-storage findutils	wlambda oxirs-star libmqm-sys lpc13xx-pac mantaray	easy-alias signalk-multidisplay cfn sipbot google-material-design-icons-bin	hermes-engine rubullet-sys run-clang-format silly-png tablegen	ffmpeg4-sys sniffnet dynamorio-sys occt-sys musix

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
43506	21132	10297	5083	2502	1053	213	32	33
git-bug zakat-ledger pipenet	google-cloud-asset-v1 sp-serializer octocode multiversx-sc-wasm-adapter	sdl3-image-sys autozig antlr-runtime-sys mown encoding-next-index-simpchinese	ntest compio-driver bounded-vec-deque miden-objects heed-types swc_ecma_transforms_compat	histogram dyn-stack error-code yuv tarpc lance-datafusion msi	seccompiler ref-cast-impl astral-tokio-tar swash turbojpeg-sys objc2-security quick_cache lingua-albanian-language-model	ureq combine wasm-bindgen tracing-opentelemetry fst rustls-pki-types tokio-rustls darling openssl-sys	serde_json rustls-webpki web-sys gimli aws-sdk-s3 prost-build chrono regex object csv	regex-automata windows_aarch64_msvc winapi librocksdb-sys rustix libc winapi-i686-pc-windows-gnu petgraph hashbrown windows_i686_gnullvm

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
41191	1590	482	314

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
5594	3242	1277	589	543	156	44	20

TLS clients
rustls	native-tls	openssl
6410	2336	1812

git clients
git2	gix
1902	274

Loggers
log	tracing	slog
64691	38014	548

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
67525	39107	3218	2963	1907	1594

Argument parsers
clap	getopts	pico-args	argh	argparse
32435	1463	674	385	119

Markdown parsers
pulldown-cmark	comrak	markdown
1382	278	258

TOML parsers
toml	toml_edit	basic-toml
19971	11925	188

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
9624	6049	2292	1707	1258	162

JSON parsers
serde_json	simd-json	json5	miniserde	tinyjson
63981	473	467	68	24

Parser generators
nom	pest	combine	peg	pom	lalrpop
12128	5945	2428	817	205	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
3026	2157	1201	380	97	32	24

Temp files
tempfile	tempdir
10528	498

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
1.93
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
1.75
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
1.93
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
1.75
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 1.67.

This many crates.io requests…	0%	3%	31%	43%	51%	68%	71%	75%	77%	82%	85%	86%	87%	88%	89%	99.1%	99.2%	99.3%	99.7%	99.8%
…use this stable version of Rust or newer	1.95	1.94+	1.93+	1.92+	1.91+	1.90+	1.89+	1.88+	1.87+	1.86+	1.85+	1.84+	1.82+	1.81+	1.77+	1.75+	1.74+	1.71+	1.70+	1.67+
This many crates.io requests…	3%	4%	5%	6%	7%	7%	7%	7%	7%	7%	8%
…use this or newer nightly version of Rust	1.95+	1.94+	1.93+	1.92+	1.91+	1.90+	1.89+	1.88+	1.87+	1.86+	1.85+

Lib.rs › Stats