smol

smol is used at run time in 263 crates (of which 96 optionally). It is a direct run-time dependency in 170 crates. It's used at build time in 1 crate. It's used only as a dev dependency in 108 crates (of which 92 directly).

Number of dependers	smol version	Downloads/month
95	2.0.0	29K
243	1.3.0	201K
5	1.2.5	2.9K
3	0.4.3	0
6	0.3.3	200
20	0.1.18	5.7K

Depender (with downloads and own rev deps)			smol version
2.3M	4988	criterion	optional	^1.2
603K	128	quinn	optional	^2
416K	37	fs4	optional	^2
237K	12	if-watch	optional	^1.2.5
104K	2	smoldot-light	optional	^2.0.0
37K	14	codspeed-criterion-compat	optional	^1.2
29K	1	async-condvar-fair	optional	^1
25K	25	socketcan	optional	^1.3
20K	22	iced_futures	optional	^1.0
20K	6	poll-promise	optional	^1.2.5
5.4K	1	delay_timer		^1.2.5
4.8K	3	retty		^2.0.0
5.5K	1	criterion2	optional	^2.0
1.6K		eventure		^2.0.0
1.5K		puppeteer		^2.0.0
4.7K	1	async-transport	optional	^2.0.0
3.8K	3	hwaddr	optional build	>=1.0.0, <2.0.0
3.5K	2	streamcatcher	optional	^1
950	2	feature-extension-for-smol		^2
2.3K	5	fmmap	optional	^1.3
420	6	melnet2		^1.2.5
350	3	nanorpc-http		^1.3.0
340	8	melprot		^1.2.5
320	3	sosistab		^1.2.5
290	4	geph4-aioutils		^1.2.5
290	2	distant-ssh2		^1.3.0
280		pcap-async		^1.2
260		ai-agents		^2.0
250	1	grafix-toolbox		^2
250	1	nursery_macro		^1.3.0
240		rublk		^1.3.0
240	1	libublk		^1.3.0
200	1	melib		^1.0.0
190	3	geph4-protocol		^1.2.5
180	5	sosistab2		^1.3.0
160	3	sosistab2-obfsudp		^1.3.0
150		webrtc-streaming-actix		^2
150	2	sosistab2-obfstls		^1.3.0
150	3	melnet		^1.2.5
140		melminter		^1.2.5
130		melwallet-cli		^1.2.5
130		cargo-fixture		^1.3.0
120	1	smol-executor-trait		^2.0
120	1	melwallet-client		^1.2.5
110		env-select		^2.0.0
110		geph4-exit		^1.3.0
100		lottie-player		^2.0.0
100		melnode		^1.3.0
800	2	timer-kit	optional	^1
		mxdns		^2
		suricata-ipc		^1.2
	2	naia-server-socket		^1.3
	2	wezterm-ssh		^1.2
	1	melblkidx		^1.2.5
		melwalletd		^1.2.5
		dir-meta		^2.0.0
	1	asuran		^0.1.18
		melminter-mod		^1.2.5
		smoldot-full-node		^2.0.0
		wez-mdns		^1.3
		direct_http		^1.3.0
	1	erl_rpc		^2
		libpylon		^1.3.0
		benchrs		^1.2.5
		asuran-cli		^0.1.18
		sosistab2-obfsws		^1.3.0
		gstreamer_iced		^2.0.0
		erldash		^2
		geph4-binder-transport		^1.2.5
	1	novasymph		^1.2.5
		rtcps		^1.3
		cait-sith		^1.3.0
	2	libtun		^0.1.11
		scripthookv-rs		^1.2.4
		blindspot		^1.2.5
		gfuckw		^1.2.5
		poseidon-client		^1.2.5
		empath		^1.2
		digtask		^2.0.0
		rust-with-kafka-tls		^1.2.4
		geph4-client		^1.3.0
		async-ssh2		^0.1
		geph4-vpn-helper		^1.2.5
		scd30-modbus		^2.0.0
		sqlui		^1.2.5
		karma-p2p-webrtc		^1.2.5
550	1	spawns-compat	optional	^2.0.0
		ikill		^1.2.5
		caspaxos-kv		^1.0.1
		hitdns		^2.0.0
		narwhalol		^0.1.4
		sosistun		^1.2.5
		wechat-mp		^0.1
		ether-dream-dac-emulator		^0.1
		meows		~0.1.11
		ap_kcp		^1.2
		crescent		^1.2.5
		kapiti		^1.2
		rmus		^0.1.18
		rust-tunnel		^1.2.5
		turingdb-server		^0.3.3
		manx		^0.1.4
		rkill_lib		^1.2.5
	4	runa-io		^1.2.5
		cooper		^1.2
		twitch_chat_wrapper		^0.3.3
		isostatic		^0.3.3
		smol-attributes		^0.1
		smtp-server		^1.2
		stocker		^0.1.18
		themelio-node		^1.2.5
		gremlin-cli		^0.4.3
		rkill		^1.2.5
	3	themelio-nodeprot		^1.2.5
		hup		^0.1.11
		lkj		^0.1.11
		neu		^1.2.5
		persia-futures		^1.0
		wirectl		^1.2.5
		delay_timer_wf		^1.2.5
		is-prime2		^1.3.0
		seagulldoro		^1.2.5
		stream-merge		^1.0.0
	1	virta		^2.0.0
	1	earendil		^1.3.0
		earendil-gui		^1
		smtp-client		^1.2
		smtp-queue		^1.2
	1	streamlette		^1.2.5
	2	runa-core		^1.2.5
	1	tundevice		^1.2.5
		psychophysics		^1.3.0
		scl-core		^1.2
350	1	rsdns	optional	^2
270	5	product-os-async-executor	optional	^1.3.0
230		agnostik	optional	^1.2.4
200	1	cargo-fixture-lib	optional	^1.3.0
200	2	twitchchat	optional	^1.2
180	4	xtra	optional	^1.1
140	2	async-send-fd	optional	^2
130	1	close_already	optional	^2
130		rucron	optional	^1.3.0
130	1	zallocator	optional	^2
110		wtx	optional	^2.0
110		mqrstt	optional	^1.3.0
	1	asuran-chunker	optional	^0.1.18
		kludgine-app	optional	^1.2.5
	1	async-abci	optional	^1.2.5
		async-vfs-os	optional	^1.2.5
		servt	optional	^2.0.0
		abci-rs	optional	^1.2.5
		blynk_io	optional	^1.2
		ch4	optional	^2
	1	credent_cli	optional	^1.2.5
	1	credent_cli_model	optional	^1.2.5
	1	dnsclientx	optional	^2
		doomsday-clock	optional	^1
		drteeth	optional	^1.3.0
		embedded-td	optional	^1.2.5
		hls_lfcd_lds_driver	optional	^1.2
	2	kvarn-quinn	optional	^2
	3	lnk-thrussh-agent	optional	^1.2
		megumax	optional	^1.2.2
		redis_tang	optional	^1
		riptun	optional	^1.2.5
		tasic	optional	^1.3.0
		task-collection	optional	^1.0
1.9M	48	async-task	dev	^2
954K	124	aws-sdk-s3	dev	^1.2.0
727K	93	rdkafka	dev	^1.2.4
575K	179	enum_dispatch	dev	^1.3.0
372K	94	sea-orm	dev	^1.2
246K	30	futures-rustls	dev	^1
206K	35	async-mutex	dev	^0.1.18
152K	17	async_once	dev	^1.2.4
119K	1	sea-orm-cli	dev	^1.2.5
90K	30	async-dup	dev	^1
89K	2	futures-ticker	dev	^1.2.5
61K	27	nats	dev	^1.2.5
51K	8	async-rustls	dev	^2.0
15K		graceful-shutdown	dev	^1.2
14K	16	portable-pty	dev	^1.2
12K		madsim-rdkafka	dev	^1.2.4
12K	18	smol-potat	dev	^1.2
10K	6	fixed-buffer	dev	^1
7.9K	5	wg	dev	^2
6.1K	11	rustls-acme	dev	^2.0.0
5.4K	1	oxide-auth-async	dev	^1.3.0
4.3K	1	async-web-client	dev	^2.0.0
4.2K	3	async-http-codec	dev	^1.2.5
3.7K	11	trillium-http	dev	^2.0.0
2.7K	3	isotest	dev	^1.2
1.9K	5	retainer	dev	^1.2
1.2K		stabby	dev	^2.0.0
1.2K	2	wait-for-me	dev	^1.3.0
1.0K	13	nanorpc	dev	^1.2.5
1.0K	2	rustdds	dev	^2.0
900		ros2-client	dev	^1.3
900		interthread	dev	^1.3.0
900	1	priority-async-mutex	dev	^1
800	2	mprocs-pty	dev	^1.2
700		crossmist	dev	^2
600	2	keepcalm	dev	^1
550		async-skipdb	dev	^2
450	2	erl_dist	dev	^1
420	1	sllm-rs	dev	^2.0
320		alhc	dev	^1.3.0
230	2	vmcircbuffer	dev	^1.2.5
210		mosquitto-rs	dev	^2.0
200	1	async-cpupool	dev	^2.0.0
180		elegant-departure	dev	^1
140		async-hidg	dev	^2
140		async-gpiod	dev	^2
130		poster	dev	^1.2
130	2	async-web-server	dev	^1.2.5
110	1	lottie-renderer-bevy	dev	^2.0.0
		async-cron-scheduler	dev	^2.0.0
	1	fastudp	dev	^1
		lapinou	dev	^1.0
	1	image2	dev	^1
		trillium-tracing	dev	^1.2.5
		trillium-acme	dev	^2.0.0
		stream_multiplexer	dev	^0.3.3
	2	tang-rs	dev	^0.1.10
		msedge-tts	dev	^2.0.0
	1	async-peek	dev	^0.4
		async-mavlink	dev	^1
	1	credent_fs	dev	^1.2.5
		messages	dev	^1.2
		aiven_rs	dev	^1.2.5
		bench-rs	dev	^1.2.1
		tophat	dev	^1.2.5
		async-quic	dev	^1.2.5
		interactsh-rs	dev	^1
		ethercrab	dev	^2.0.0
		pg_wire	dev	^1.2.5
		coil	dev	^1.2
		credent	dev	^1.2.5
		nats-aflowt	dev	^1.2.5
		curseforge	dev	^1.2
		async-tcp	dev	^0.4
		async-time-mock-smol	dev	^2
		async-task-ffi	dev	^1.0.1
	2	tintanum	dev	^1.3.0
		async-scgi	dev	^1.2
		futures-mockstream	dev	^0.1.4
		juggle	dev	^1.0.1
		starfish-ql	dev	^1.2
	1	picomux	dev	^2
		gsi	dev	^1.0.0
	2	mfio	dev	^1
		modrinth	dev	^1
		see-you-later	dev	^0.1
		pipe_macro	dev	^0.1
		rmw_ttlmap	dev	^1.2.5
		tdn_permission	dev	^1
		tdn_storage	dev	^1
		autolog	dev	^1.2
	1	sfu	dev	^2
		apecs	dev	^2.0
		retainer_nickbp	dev	^1.2
	1	mfio-rt	dev	^1
		radicle-keystore	dev	^1.2