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

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

There are 55,375 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 216138 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
32099	17759	18212	20183	16651	13872	12019	10143	8948	7495

10	11	≥12	≥14	≥16	≥18	≥20	≥25	≥30	≥40	≥60	≥80	≥100	≥120	≥150
6326	5743	8852	6370	5285	4073	5822	3326	3038	1615	344	88	47	10	10
m3u_parser fox-dotfile cargo-cycles dtz-core safe_crypto	noem tray-item workspacer-add-new-crate-to-workspace df_st_cli valence_anvil	tauri-plugin-axum bevy-atlas-loader supasim-kernels aws-auth-payload sp-crypto-ec-utils	enprot well rona certo wl-clipboard-rs	dedupefs ragit-server crcnt_rbac sudoku_machine regview	phonenumber-fixed synd-feed aws-sdk-account cmw migratio	butane filepack beleth octoroute ant-service-management	wukong mitoo rustedbytes-counterlines tanu-tui asic-rs	courses api_openai cnidarium lumesh grafton-visca	odl phoenix_gui cess-sp-porep beet_core tag2upload-service-manager	r-u-still-there deno_runtime sequoia-openpgp clone-solana-accounts-db llm-incident-manager	hipcheck cargo deno_runtime_tauri pgp kcl-lib	gpui polkadot-service surrealdb-core-beta staging-kusama-runtime dynamo-llm	kodegen_candle_agent zawk atlas-runtime zero4rs kodegend	apollo-router homestar-workspace-hack solana-core polkadot-sdk uhg-custom-appollo-roouter

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
29612	23230	13281	6743	2432	2182	1387	576	277	164	106	126	71
occlum-sgx cuddle-please-commands tomcrypt-sys sov-stf-runner snowbridge-outbound-queue-v2-runtime-api	eds-core miniconf_mqtt warp-resolver-pkg safe_app cfile	trident-syn gfa jsonrpc-tcp-server roughenough-protocol gl33	geos carbon-macros sardonyx_error mago-source ascii_table	pezcumulus-primitives-core mdbook-preprocessor libadwaita mobc tui-big-text	oxc zenoh-protocol mod_interface nu-plugin rusty-hook nonempty-collections re_byte_size flurry ordermap pallet-transaction-payment-rpc-runtime-api	crypto_secretbox sysctl aok seqlock datafusion-functions-window solana-stake-program findshlibs referencing protobuf-parse ethers-middleware	reqwest-middleware enum-map bevy_encase_derive wasm-timer wgpu-core-deps-windows-linux-android solana-epoch-rewards rle-decode-fast ndk-glue arrow-row schnellru	windows-numerics windows-threading jpeg-decoder cfg-expr error-code assert_cmd doc-comment orbclient windows-future tiff	rdrand ndk-sys scoped-tls block2 dispatch2 winapi-build console_error_panic_hook iovec proc-macro-error2 kernel32-sys	bincode dyn-clone cast libloading oorandom gimli humantime bit-set vec_map atty	time-core hex arrayvec atomic-waker tokio-macros libredox http-body-util num-conv powerfmt mime	wasm-bindgen-macro-support futures-task parking_lot js-sys either equivalent tokio base64 futures-util bytes

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
61057	41663	13767	24883	16864	19776	11113	11550	4885	2356	416
anvil-liquid-derive exif-rs insectbox aws-unlock openvm-rv32-adapters	modifier_macro mind_sdk_lb simple-digraph hashirama zsync	twine_builder diesel_cockroach zigbee2mqtt_types_vendor_zen lightbird dir_contents	geph4-vpn-helper bcrypt-small easy-jsonrpc-mw scoop rustlite	rustronomy-fits p2panda-store wmill mazer-cli mpdclient-sys	warp-request-body theban_interval_tree joker ragged-buffer siwa	graph_mvcc sms-2dm salvo-cli disruption_types cast_checks_macro	exprtk_sys postcard-derive panic-msp430 clvm-utils mdbook-pdf-headless_chrome	debugless-unwrap path-dedot ethcontract-generate vertigo histo	libpulse-simple-binding direction unicode_names2 swc_ecma_codegen autocfg	fern libloading djangohashers epoll blip_buf

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
26506	16848	16976	24048	33791	26764	19251	14263	18982	9739	1162
fixlite rlibc-extended beleth icao-wgs84 daemon_console_lite	droid-wrap-utils boreal-parser formidable-derive depyler-core insight-line	grow_libsql gilrs-core safehold wow-blp rocket_anyhow	mctp-usb-embassy mpl-account-compression smithay-egui subproductdomain-nucypher-temp5 megra_rs	bevyhub_core polkadot-runtime-releaser-lib wasm_seam embedded-websocket ipcheck-rs	trojan_rust linux-rust-bindings line_channel_access_token crypto-botters tree-sitter-gomod	rust-macios-objective-c-runtime-proc-macros lol-core num-sign wasi_snapshot_preview1 embedded-hal-vcd	comtrade nash-protocol istamon-qml-extras tide gfx-solana-utils	better-as mz_rusoto_route53resolver displaythis munch freeimage	largest-remainder-method mio-pool traitor artifact_serde frcds	recycler xsettings unum libstrophe-sys ruplicity

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
8964	9353	11758	21314	35007	31505	24234	19176	27554	16324	3141
eva-rt-common celik astal-greet-sys beleth toon-lsp	daemon_console_lite rigatoni-stores myer lr_rust_shared_structs spellchk	blindpay parser-proxy-ws scalop safehold sub-registrar	drand48 git-bug fromsoftware-dlrf-derive subproductdomain-nucypher-temp5 ratio-metadata	hashirama tracing-proc-macros-ink traefik_wasm_api reto rengrep	keccak-asm gedcom-rs vectorscan-async trojan_rust async_monad	squ soroban-ledger-snapshot acir_field boreal-parser num-sign	morslate sia-macro darrentsung_debug_parser kyun manifest-gen	polyhorn-test butane revaultd dencode narwhal_me	tictactoe-rust tm4c-hal ring_queue display-link read_line	get_if_addrs xsettings isbnid rotor-stream directwrite

Number of releases per crate

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

1	2	≥4	≥8	≥16	≥32	≥50	≥100	≥500
64513	50432	40363	27405	15321	5047	3474	1701	74
aws-unlock anvil-liquid-derive exif-rs openvm-rv32-adapters insectbox	mind_sdk_lb parser-proxy-ws unc-abi-client-impl rocket_anyhow zsync	pipenet seaplane-oid egui-datepicker zakat-ledger zonefile-crds	boreal-parser glslt_cli uv-pep508 bonsaidb-client smartcardhsm_pkcs11_loader	design_token_parser surrealml-core cargo-ptest funzzy oven	uu_split grdf arysn atri_plugin papa	psbt circuit_sequencer_api datafusion-sql flowcore bevy_input	libp2p cargo-spellcheck dharitri-wasm-debug alloy-consensus stak-r7rs	swc_ecma_utils hyperlane solana-vote-program swc_ecma_transforms_testing solana-perf

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
26428	9533	9732	7756	979	237	101	77	36	39	1
mdub dursunkoc nakajima wiremine kouky	vic raggi schacon michaelmelanson pnathan	elliottslaughter nex3 jfernandez emkay bjeanes	thijsc jamescoleuk bankusy mpalmer xenoterracide	jondot Tpt rawkode marirs svc-pdk_sfemu legoktm upsuper Narsil	hko-s ananas-block danieldk alecmocatta milesj adam-gaia A1-Triard hardliner66	bevyengine embark-studios kpcyrd j-mendez divi255 ahaoboy AbstractSDK matklad	shellrow rivy vertexclique mattsse mikevoronov OpenTalk-Bot bmwill valff	artifact-byted refcell sorpaas gkgoat1 Manishearth a-kenji-buildbot ruvnet PsichiX	coryan Azure suzmue dtolnay googleapis cool-japan piot azure-sdk

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
22441	71314	77119	14402	13786	3236	5000	993	39
rust-ggm-test openvm-rv32-adapters limon-client modifier_macro yttrium_std_database_exists	approx_eq cacheguard noem unc-abi-client-impl grrs-cli	rocket_anyhow valence_anvil aws-auth-payload quarantine anvil-liquid-derive	compio-quic dtt rona font-map-core imagnum	colorutils-rs rtran glulxe-sys amtrack_rs google-apigee1-cli	tic_tac_toe asdf-overlay-hook curve25519-dalek-fiat ra4m1-fsp-pac headwind	google-material-design-icons-bin scirs2-integrate easy-alias dotnetrawfilereader-sys nf-rated	cw-it tablegen run-clang-format rs_osrm switchboard-solana	musix efm32gg12b-pac wandio-sys ng-rocksdb re_web_viewer_server

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
39444	19556	9313	4747	2178	834	143	18	26
bonsai-rest-api-mock octoroute googleapis-tonic-google-cloud-cloudcontrolspartner-v1beta	wash vello_sparse_shaders mpl-account-compression sp-serializer	darrentsung_debug_parser depyler-core salvo-http3 smol-macros cquisitor-minicbor	lalrpop-snap typos-cli tor-keymgr fast-math core-models llm_models	wl-clipboard-rs dioxus-core gix-trace deadpool-postgres aprender subprocess modular-bitfield	flexi_logger num-conv graphql_client_codegen wasm-opt crc ratatui-image napi-build rustyline	jpeg-decoder schemars der c-kzg minimal-lexical parking_lot backtrace malachite-nz rust-embed	libz-sys librocksdb-sys unicode-width hashbrown libgit2-sys aws-lc-fips-sys zerocopy web-sys object nix	v8 libc tokio syn windows_aarch64_msvc winapi-x86_64-pc-windows-gnu winapi-i686-pc-windows-gnu windows linux-raw-sys openssl-src

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
38287	1563	421	286

Web frameworks
tower	axum	actix-web	rocket	warp	poem	rouille	gotham
5063	2857	1243	579	542	156	42	20

TLS clients
rustls	native-tls	openssl
6202	2238	1795

git clients
git2	gix
1782	245

Loggers
log	tracing	slog
61471	35184	541

Error handling
thiserror	anyhow	quick-error	eyre	snafu	miette
62544	36514	3110	2799	1778	1491

Argument parsers
clap	getopts	pico-args	argh	argparse
30787	1363	622	379	119

Markdown parsers
pulldown-cmark	markdown	comrak
1276	250	219

TOML parsers
toml	toml_edit	basic-toml
18710	11290	180

Binary encoders
bincode	prost	rmp-serde	protobuf	ciborium	capnp
9349	5657	2083	1608	1161	156

JSON parsers
serde_json	json5	simd-json	miniserde	tinyjson
59959	454	421	67	22

Parser generators
nom	pest	combine	peg	pom	lalrpop
11504	5587	2308	695	174	25

XML parsers
quick-xml	xml-rs	xmlparser	xml5ever	libxml	rxml	elementtree
2778	2097	1127	351	95	32	24

Temp files
tempfile	tempdir
9953	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
1.75
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
1.92
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. 88% of requests were from stable (non-nightly) Rust versions. Less than 0.11% of requests came from Rust versions older than 1.63.

This many crates.io requests…	0%	8%	48%	55%	64%	70%	74%	77%	81%	85%	86%	89%	90%	98%	98%	98%	99.6%	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+	1.83+	1.82+	1.80+	1.75+	1.74+	1.72+	1.70+	1.67+	1.63+
This many crates.io requests…	7%	8%	9%	9%	10%	10%	11%	11%	11%	11%	11%	11%	11%	12%
…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+	1.83+	1.82+	1.80+	1.75+

Lib.rs › Stats