Memchr

Memchr is used at run time in 44,066 crates (of which 14,136 optionally). It is a direct run-time dependency in 565 crates. It's used at build time in 4,136 crates (of which 760 optionally, 1 directly). It's used only as a dev dependency in 6,481 crates (of which 4 directly).

Number of dependers	Memchr version	Downloads/month
53,390	2.7.2	9.7M
1	2.6.2	2.5M
230	2.3.4	80K
478	1.0.2	75K
584	0.1.11	16K

Depender (with downloads and own rev deps)			Memchr version
6.9M	1866	nom		^2.3
5.9M	151	object		^2.4.1
13.7M	50	regex-automata	optional	^2.6.0
3.9M	1059	axum		^2.4.1
3.9M	303	bstr		^2.7.1
12.2M	128	aho-corasick	optional	^2.4.0
11.1M	9070	regex	optional	^2.6.0
2.5M	88	combine		^2.3
2.6M	15	csv-core		^2
2.7M	517	quick-xml		^2.1
7.7M	2515	futures-util	optional	^2.2
6.9M	67	winnow	optional	^2.5
1.9M	143	async-compression		^2
1.4M	373	ignore		^2.6.3
1.0M	53	multer		^2.4
1.0M	270	prometheus		^2.3
1.0M	36	sqlx-core		^2.4.1
3.6M	459	futures-lite	optional	^2.3.3
3.1M	678	pest	optional	^2
1.0M	437	pulldown-cmark		^2.5
2.6M	38	os_str_bytes	optional	^2.3.5
885K	40	actix-codec		^2.3
847K	3	sqlx-postgres		^2.4.1
842K	4	sqlx-mysql		^2.4.1
638K	3	arrow-string		^2.7.1
627K	47	wast		^2.4.1
582K	72	jsonschema		^2.7
555K	39	core2		^2
506K	8	gix-config		^2
488K	27	postgres-protocol		^2.0
379K	306	glib		^2.7.1
377K	69	asynchronous-codec		^2
370K	463	rustyline		^2.0
321K	27	maxminddb		^2.4
880K	1706	async-std	optional	^2.3.3
253K	36	twoway		^2.0
229K	15	buf_redux		^2.0
207K	49	embed-resource		^2.7
197K	202	regress		^2.4.0
179K	83	nom_locate		>=1.0.1, <3.0.0
175K	2	static_init_macro		^2
169K	9	foundationdb		^2.7.1
161K	28	content_inspector		^2
151K	5	http-auth		^2.4.1
140K	51	actix-multipart		^2.5
140K	15	tauri-utils		^2
130K	30	nom-supreme		^2.3.4
130K	427	rocket		^2
127K	34	swc_ecma_codegen		^2.6.1
378K	40	iri-string	optional	^2.4.1
123K	6	rocket_http		^2
123K	171	mdbook		^2.5.0
112K	28	tree_magic_mini		^2.0
96K	1	stable-pattern		^2
91K	1	email-encoding		^2.1
90K	31	crates-index		^2.5.0
88K	118	cargo		^2.7.1
84K		nom8		^2.3
83K	15	grep-matcher		^2.6.3
83K	14	grep-searcher		^2.6.3
76K	14	polars-io		^2.6
76K	10	polars-ops		^2.6
72K	30	async-nats		^2.4
70K	9	tame-index		^2.5
66K	10	async-sse		^2.3.3
63K	27	nats		^2.4.0
63K	4	buffer-redux		^2.0
57K	57	tower-lsp		^2.5
52K	6	subst		^2.4.1
51K	37	cstr_core		^2.3.3
50K	26	linkify		^2.0.1
49K	3	sqlite3-parser		^2.0
49K	41	fuser		^2
41K	5	rfc2047-decoder		^2.5
40K	106	comrak		^2
30K	2	xwin		^2.6
29K	9	cstr-argument		^2
23K	14	futures_codec		^2.2.3
23K	25	chardetng		^2.2.0
21K	7	storekey		^2.5.0
22K	2	tree-sitter-tags		^2.7.2
21K		sliceslice		^2.3
19K	3	tree-sitter-cli		^2.7.2
19K	3	darwin-libproc		~2.3
16K	13	duckdb		^2.3
15K	6	htmlize		^2.5.0
14K	2	parse-js		^2
14K	10	systemd		^2.4.0
13K	3	freedesktop-desktop-entry		^2
12K	36	lol_html		^2.1.2
12K	27	minify-html		^2
12K		sccache		^2
11K	7	apollo-parser		^2.6.1
11K	2	fast-xml		^2.5
12K	24	fwdansi		^2
11K	2	minify-html-common		^2
10K	2	measured		^2
10K	10	subslice		^2.0
10K	8	linereader		^2
30K	10	re_arrow2	optional	^2.6
9.8K	2	c2pa		^2.7.1
9.0K	1	databend-sql		^2.7
8.8K	3	sse-codec		^2.2
8.7K	9	oxc_parser		^2.7.2
8.0K	3	nucleo-matcher		^2.5.0
7.5K	40	needletail		^2.2.1
7.2K	1	serde-smile		^2
6.7K	3	rattler		^2.7.2
19K	118	uucore	optional	^2
6.3K	5	iowrap		^2
6.2K	14	ra_ap_ide_db		^2.6.4
6.1K	2	piz		^2.0
5.8K		libcst		^2.5.0
5.3K	7	pdf-writer		^2
15K	16	age	optional	^2.5
5.0K	1	libsql-sqlite3-parser		^2.0
4.4K	16	jsonxf		^2.3.4
4.3K	5	parse-changelog		^2.4
4.2K		regex-cursor		^2.6
12K	11	routefinder	optional	^2.6.4
4.2K	1	sailfish-compiler		^2.5.0
3.9K	1	apollo-router		^2.7.1
3.8K	11	trillium-http		^2.7.1
3.8K	2	linux-perf-data		^2.4.1
3.7K	2	srcsrv		^2.4.1
3.6K	1	linux-perf-event-reader		^2.4.1
3.3K	3	s3s		^2.6.2
3.1K	7	serde_yml		^2.7.2
3.0K	3	mpart-async		^2.4.1
9.1K	26	tokio_wasi	optional	^2.2
2.7K	24	monoio		^2.7
2.7K	7	noodles-fasta		^2.3.3
2.7K	1	terminal-colorsaurus		^2.7.1
8.3K	1	engineioxide	optional	^2.5.0
2.6K	5	hard-xml		^2.4
2.4K	6	rev_buf_reader		^2.4.1
2.1K	9	noodles-sam		^2.3.3
2.0K	9	noodles-vcf		^2.3.3
6.5K	5	packageurl	optional	^2.4.0
1.9K	1	rustpython-parser-vendored		^2.5.0
1.9K	6	rustpython-parser-core		^2.5.0
1.9K		cargo-spellcheck		^2
1.9K		rspack_sources		^2.6.4
1.9K	13	rbdc		^2.5.0
1.8K	5	trillium-client		^2.7.1
1.8K	1	lapce-xi-rope		^2.0
1.8K	1	gvariant		^2
1.7K	2	atuin-client		^2.5
1.7K	6	no_std_io		^2
1.6K	2	noodles-fastq		^2.3.3
5.0K	3	async-codec-lite	optional	^2.3
1.4K	4	h264-reader		^2.1.1
1.4K		xh		^2.4.1
1.3K		icu_datagen		^2.5.0
1.3K	5	cstring		>=2.3.4, <3.0.0
1.3K	2	qsv-sniffer		^2
1.2K	2	adblock		^2.4
1.2K	4	acid_io		^2
1.2K	1	doc-chunks		^2
1.2K	6	pam		^2.5.0
1.2K	2	starlark_syntax		^2.4.1
1.1K	8	hocon		^2.3
1.1K	3	tor-dirclient		^2.5
1.1K	1	form-data		^2.7
1.1K	2	sqlx-core-oldapi		^2.4.1
1.0K	2	rustis		^2.7
950	3	rustpython-vm		^2.7.2
900	2	samply-symbols		^2.7
850	1	uu_cut		^2
850	23	seq_io		^2.5.0
850	1	uu_join		^2
850	2	rustpython-stdlib		^2.7.2
850	1	boreal		^2.7
800	3	git-config		^2
800	1	uu_hashsum		^2
800	1	uu_sort		^2
800	1	uu_head		^2
800	1	uu_shuf		^2
800	1	uu_split		^2
750	3	rat-input		^2.7.2
750	1	uu_tac		^2
750	1	uu_tail		^2
700		samply		^2.7.2
700	4	delharc		^2
700	1	ra_ap_rust-analyzer		^2.7.1
650		less-avc		^2.5.0
650	3	omnom		^2.2.1
650		kamo		^2.6.4
650	6	strong-xml		^2.4
600	4	csv-sniffer		^2
600	2	ckb-indexer		^2.7
2.3K	3	gstuff	optional	^2
500	10	pgn-reader		^2.2
500	2	cpp_synmap		^1.0
500	4	bitbuffer		^2.7.2
500	1	lozizol		^2
500	1	applesauce		^2.7
460		zawk		^2.7
460		kseq		^2.5
450		bgpfu-netconf		^2.0
440	3	ezk-sip-types		^2
440	2	pkbuffer		^2.5.0
440	1	samotop-delivery		^2.3
430	3	minify-html-onepass		^2
430	1	heim-process		~2.3
420		tidier		^2.7.2
420		twitch-tui		^2.7.1
420		yara-x		^2.7.1
410		cargo-attribution		^2.7.1
410	2	format_num_pattern		^2.7.2
410		radixmap		^2.7
400	2	bellframe		^2.6.3
370	1	krata-xenclient		^2
360	6	xi-rope		^2.0
350	3	fastq		>=0.1
340	2	gpgrv		^2
340	3	orgize		^2.4
340	1	spirv-builder		^2.4
340	2	c_fixed_string		^2.0.1
330		dlt-core		^2.4
330	2	lsp-positions		^2.4
320	2	maelstrom-fuse		^2
320		rustyline-with-hint-fix		^2.0
310	2	aquatic_http_protocol		^2
1.4K	1	multiparty	optional	^2.4
300	4	jid		^2.5
290		fxtools		^2.5.0
290		bnf_sampler		^2.5.0
280		cargo-doc2readme		^2.7
270		monoio-route		^2
270		linux-info		^2.4.1
270		i3bar-river		^2
260	2	monoio-http		^2.5
260	7	sozu-command-lib		^2.7.2
250	1	aquatic_http		^2
240	1	yhy-email-encoding		^2.1
240	1	min_http11_parser		^2.7
240	2	loc		^2.0.1
220		uhg-custom-appollo-roouter		^2.7.1
220		hck		^2.7.2
220		fs-tail		^2.3.4
220		tar-no-std		^2.7
220		hgrep		^2.7.2
220		votable		^2.7
210	1	prse		^2.7.1
200	1	applesauce-core		^2.7
200		jupiter		^2.5
200	2	lightmotif-io		^2
200		bare-io		^2
190		multipart-rs		^2.7.1
190		sonnerie		^2.4
190		scdb		^2.5.0
190		malva		^2.7
190	2	ckb-gdb-remote-protocol		^2.3.3
190		cloudfront-logs		^2.7.2
180		suricata		~2.4.1
180	2	sozu-lib		^2.7.2
180	1	npezza93_tree-sitter-tags		^2.7.2
170		tass		^2.6.4
170		zip-rs		^2.4.1
170		cdx		^2
170	3	rbdc-pg		^2.4.1
170		localctp-sys		^2.3.3
170		repro-env		^2.5.0
160		blackbox-log		^2.4.0
160	1	clucstr		^2.7.2
160		felixs-tower-lsp		^2.5
150	1	hyperbuild		^2.3.3
150		welds-sqlx-mssql		^2.4.1
150		csv_perusal		^2
150		hippotat		^2
950	3	qapi	optional	^2.3.3
140		markup_fmt		^2.7
140		pegasus-ssh		^2.4.1
130		ripgrep_all		^2.5.0
130		sequoia-chameleon-gnupg		^2
130		norm		^2
120		stdecor		^2.7.1
120		procmon-oprs		^2
120		rsbwapi		^2.5
120		yam-core		^2.5.0
120		ddp2ass		^2.5.0
110	1	ffi-pool		^1.0.1
850	4	spirv-tools	optional	^2.3
110		ff-find		^2
110		file_rw		^2.6.4
110	4	rotor-stream		^0.1.7
110	2	kparse		^2.5
100		kes		^2.3.4
100		lines		^1.0
	1	juju		~1.0
		uniprot		^2.6.4
		mdbook-dtmo		^2.5.0
	1	file-descriptors		^2.1.2
	4	oxttl		^2.5
	1	swiss-army-knife		^2.3.3
		pipecolor		^2
	1	profiler-get-symbols		^2.4
	2	twitter-stream		^2
	1	php-literal-parser		^2.7.1
	2	dns-protocol		^2.5.0
	2	rusqlite-le		^2.3
		git-absorb		^2.3
		collectd-plugin		^2
	1	tree_sitter_lint_tree-sitter-grep		^2.1
	1	kvarn-extensions		^2
	1	archetect-core		^2
	1	bitstream_reader		^2.2
		lolcow-fortune		^2.5.0
	1	prometheus-32bitfix		^2.3
	1	libui-ng-sys	build	^2.5
	1	lineriver		^2.7.1
		netio		^1.0
		nucleus-http		^2.5.0
		linux-support		^2.3.3
		baz-difftastic		^2.6.4
	8	millennium-utils		^2.4
		cw		^2.1
	1	kickstart		^2
		dbgen		^2.3
	1	entab		^2.3
	1	ib_tws_core		^2
	3	arrow-parser		^2.5
	1	bvr-core		^2.6
	1	fastx		^2.7.1
		nondestructive		^2.5.0
	1	pinetime-lvgl		^2
		yatima-rustyline		^2.0
	1	async-dns		^2.5.0
		serde_bibtex		^2.7
	1	wz-utf8		^2
		xfind		^2.4
		bioutils		^2.4.0
	1	oxidd-parser		^2
		cdbc-mysql		^2.3.4
	1	org-rust-exporter		^2.5.0
	1	assembly-data		^2.3
	1	codemap2		^2.5.0
		frawk		^2.4
	1	elikoga-ical-rs		^2
		barebones-watchface		^2
		cdbc-pg		^2.3.4
		mapped-file		^2.5.0
		data_reader		^2.5.0
	2	latin1str		^2.3
		mm0b_parser		^2.3
	1	tina-core		^2.5.0
		unnest-ndjson		^2
		wz-utf16		^2
		csx64		^2.3.4
		regex_dfa		^0.1
		gdb-protocol		^2.2.1
	2	pinetime-watchface		^2
	2	vimwiki-core		^2.3.3
600		devela_depend	optional	^2.7.1
	1	duckdb-queryscript		^2.3
		seredies		^2.5.0
		libredefender		^2.4.0
		zet		^2.4.0
	1	url-crawl		^2
	2	breezy-osutils		^2.3.3
	2	esparse		^1.0.1
	1	hexe_core		^2.0.0
		to-trans		^2.6.4
	2	tokio-http2		^0
	1	fastchr		^2.0.1
		ctp-sys		^2.3.3
	5	northstar-runtime		^2.6.2
	2	opengauss-protocol		^2.0
		anewer		^2
550		json-lines	optional	^2.0
	5	pinetime-macros		^2
	2	tree_sitter_grep_ignore		^2.1
		unweave		^2
		htmldom_read		^2.2.0
		statsdproto		^2.3.4
	1	bl602-macros		^2.3.4
	2	cynthia		^2.3.3
		string-ring		^2.5.0
		yglnk-core		^2.5
	5	cdbc		^2.3.4
	2	av1an-core		^2.4.1
		doclog		^2.5.0
		mercurius		^2.3.3
		slb		^2.3
		xi-core-lib		^2.0.1
	1	kaydle-primitives		^2.5.0
		livesplit-core		^2.3.4
		nix-index		^2.5.0
		pixelflut		^2.4
		pax		^2.0.1
	2	secop-core		^2.2.1
	1	tiny-mailcatcher		^2.4.0
	1	fifthtry-mdbook		^2.0
		nixterm		^2.1.0
		starsector		^2.5
		xtoken		^2.5.0
		dsrs		^2.3
		ellidri-reader		^2
		mailmodel		^2
		nats-aflowt		^2.4.0
		cargo-fetcher		^2.3
	1	equt-md		^2.3
		rds_proxy		^2.6.4
		shoes		^2.6.3
		comp_input		^2.2.1
		tide_compressed_sse		^2.3.3
		tree-sitter-grep		^2.1
	3	aptos-workspace-hack		^2.5.0
		entab-cli		^2.3
		mr-mime		^2.5.0
		pattern-3		^2.0
		apt-swarm		^2.5.0
		codeowners-rs		^2.5.0
		dhcparse		^2.4
		discord_game_sdk		^2.2
	1	falco_event		^2.7.1
		falco_plugin		^2.7.1
		ioym		^2.2.1
		linux		^2.2
		ms3d		^2
		rofuse		^2
		s3-server		^2.4.0
		spanned_json_parser		^2.6.4
	1	wearte_derive		^2.1
		astro-rs		^2.4, <2.6.3
		buf-ref-reader		^2
		deucalion		^2.5
		grass-runtime		^2.4.1
		kpal		^2.3
		mdxbook		^2.0
	1	pinetime-mynewt		^2
		vue-sfc		^2.4.1
	1	xmlparser-derive-utils		^2.3.2
		crate-race		^2.1.2
	1	osutils		^2.3.3
		arrow-lang		^2.5
		async-scgi		^2.4
		lazy-string-replace		^2.2
		async_buf_reader_utils		^2
	1	combine_wasi		^2.3
		crymap		^2.3
	1	front-line-router		^2.6.4
		gret		^2.5.0
		min_shark		^2.7
	2	rpfm_lib		^2.5
		scrumple		^2.0.1
		x12pp		^2.2.0
		yargs		^2.4
	3	agilulf_protocol		^2
		handdrawn-watchface		^2
		limit_read		^2.2.0
		pb-imgsize		^2.5.0
		rtss		^2
	1	rustyline-with-newest-nix		^2.0
	1	spectrusty-formats		^2.5
		bdecode		^2
		gitbook		^2.0
		hrx		=2.3.4
	2	io-streams		^2.3.4
		linebuf		^2.0.1
		mda		^2.2
		nom5_locate		>=1.0.1, <3.0.0
		postcss		^2.4
	1	puzz-sse		^2.4
	2	sqlx-core_wasi		^2.4.1
		vkcargo		^2.1.3
		yaircc		^2.2.1
		crispr		^2.2
		dedup		~2
		environment-sanity		^1.0
	1	mprovision		^2.5.0
		nephele		^2.3.3
	1	rustfmt_ignore		^2.1
	1	sse-agent		^2.4.1
		hocon-linked		^2.3
		jpar		^2.3.4
		lines_u8		^2.1.2
		moenarchbook		^2.0
		pulldown-cmark-fork		^2.2
		pwgraster		^1.0.1
		quatrain		^2.3.3
		sie4		^2.5
		simput		^2.3
	1	swf-parser		^2.5.0
		textstream		^1.0.1
		undis		^2.4
		zorio		^2
		async-compression-issue-150-workaround		^2.2.1
		codam-mdbook		^2.0
	1	http-multipart		^2.5.0
		ib_async		^2.0
	1	novel		^2
		ruby-parser		^2.2.3
		statsrelay		>=2.0.0, <3.0.0
		tgrep		^2.3
		yarte_lexer		^2.3
		sqlx-core-guts		^2.4.1
		telemetry-parser		^2.5
		elf-riscv32		^2.5.0
		mincat		^2.7.1
		novel_extra		^2
		taxonomy		^2.2.1
	1	black_marlin-compiler		^2.4.1
		cgmemtime		^2.7.1
		http-serve		^2.0
		hunt		^2.7.1
		levitating-fuser		^2
	1	orbtk-core		^2
		reinda-core		^2.5.0
		ruby-lexer		^2.2.3
		silent-multer		^2.4
		blutgang		^2.5.0
	1	botao		^2.1.0
		carapace		^2.3.4
	1	harper		^2
		plow_cli		^2
		sh4d0wup		^2.5.0
	1	shift_or_euc		^2.2.0
	1	uhttp_media_type		^1.0
	1	uhttp_request		^1.0
		cappy3ds		^2.6.3
		duckdb-quan		^2.3
		fluke		^2.5.0
	1	fluke-buffet		^2.5.0
		google_pem		^2.7.1
		im-rope		^2
		jprops		^2.7.1
	3	litcheck-core		^2.7
	1	litcheck-filecheck		^2.7
	1	noggin-parser		^2.6.4
		nom-span		^2.6.4
		norms		^2
390		mendes	optional	^2.5
330	1	tokio-async-std	optional	^2.3.0
200		agprefs	optional	^2.5
160		boluo	optional	^2
130	8	clarity-repl	optional	^2.4.1
130		chaintools	optional	^2.7
120		wtx	optional	^2.0
100	10	devela	optional	^2.7.1
		degenverate	optional	^2.7.1
		io_interner	optional	^2
	6	oxidd-dump	optional	^2
		rpc-it	optional	^2.5.0
		sentinel	optional	^2
	2	cstrptr	optional	^2.2
	1	aloxide	optional	^2
		broker-tokio	optional	^2.2
	3	common_uu	optional	^2
		completion	optional	^2.3.4
		cursed	optional	^2
	1	dangerous	optional	^2.4
	4	fastobo	optional	^2.2.1
	5	kvarn	optional	^2
		lazyxml	optional	>=2.3.0, <3.0.0
	2	memedb_core	optional	^2.5.0
		mozilla-central-workspace-hack	optional build	^2
		repr	optional	^2.5.0
		str-queue	optional	^2.4.0
29K	14	odds	dev	^2.0
1.7K		wasmtime-cli	dev	^2.4
600		swift-check	dev	^2.7.2
170		hyperminhash	dev	^2
160		super_speedy_syslog_searcher	dev	^2.7.2
	2	ripline	dev	^2
		wasmtime-crypto	dev	^2.4
		regexp2rust_macro	dev	^2.5.0
		simplify-polyline	dev	=2.6.2
		lets-see-if-this-builds-on-docs-rs	dev	^2.5.0