Heapless

Heapless is used at run time in 1,360 crates (of which 275 optionally). It is a direct run-time dependency in 446 crates. It's used at build time in 1 crate (). It's used only as a dev dependency in 113 crates (of which 30 directly).

Number of dependers	Heapless version	Downloads/month
653	0.8.0	568K
641	0.7.17	423K
55	0.6.1	7.5K
108	0.5.6	8.5K
16	0.4.4	66
1	0.2.7	0

Depender (with downloads and own rev deps)			Heapless version
6.5M	213	ipnet	optional	^0
2.0M	110	aead	optional	^0.7
511K	100	faster-hex		^0.8
389K	54	rstar		^0.8
735K	43	zvariant	optional	^0.8.0
506K	256	postcard	optional	^0.7.0
114K	47	smoltcp		^0.8
83K	78	embassy-sync		^0.8
66K	2	serde_prometheus		^0.8
37K	114	usb-device		^0.8
37K	13	wasmer-wasix		^0.7.16
33K	80	embassy-time		^0.8
28K	6	flacenc		^0.8.0
29K	10	pgrx		^0.8
87K	5	octseq	optional	^0.8
81K	26	domain	optional	^0.8
71K	32	serde-json-core	optional	^0.8
71K	54	ts-rs	optional	>=0.7, <0.9
66K	29	crc-any	optional	^0.8
12K	10	iso7816		^0.7
11K	20	esp-idf-hal		^0.8
10K	22	embedded-svc		^0.8
9.4K	1	embedded-test		^0.8.0
9.1K	2	esp-idf-part		^0.8.0
9.1K	1	bt-hci		^0.8
8.6K		komac		^0.8.0
8.2K	4	embassy-net		^0.8
7.7K	60	cortex-m-rtic		^0.7.7
7.7K	25	esp-idf-svc		^0.8
7.1K	10	embassy-usb		^0.8
5.0K		stak-primitive		^0.8.0
4.9K	2	tlv-rs		^0.7.16
4.4K	17	ansi-parser		^0.8.0
3.9K	18	embedded-sdmmc		^0.8
3.8K	8	palaver		^0.5
3.8K	14	heapless-bytes		^0.8
3.7K	5	coap-message-implementations		^0.8
3.1K	1	esp-wifi		^0.8.0
2.7K	4	postcard-rpc		^0.8.0
2.5K	8	atat		^0.8
2.4K	2	anise		^0.8.0
7.4K	4	mipidsi	optional	^0.8.0
1.9K	9	stak-file		^0.8.0
1.9K	3	smoltcp-nal		^0.7
1.7K	5	minimq		^0.7
1.7K		embedded-plots		^0.7.3
1.6K	4	mqttrs		^0.7
1.5K	7	esp-hal-common		^0.8.0
4.7K		every_variant	optional	^0.7.0
4.7K	1	random_variant	optional	^0.7
1.2K		cblt		^0.8.0
1.2K	2	kanata-keyberon		^0.7.16
1.2K		foundation-ur		^0.8
1.2K		rust-mqtt		^0.8
1.2K	3	nmea		^0.8
4.0K		rsiot	optional	^0.8.0
900	3	rtic-sync		^0.8
900	2	sans-io-runtime		^0.8
900	1	embedded-nal-minimal-coapserver		^0.5
3.2K		ts-rs-json-value	optional	^0.7
800	1	embedded-nal-coap		^0.7
750	2	elliptic-curve-tools		^0.8
750	1	seeed-erpc		^0.5
700		mini-rxtx		^0.7
2.6K	1	justjson	optional	^0.8.0
700	3	miniconf_mqtt		^0.8
700	4	littlefs2		^0.7
650		hwatch		^0.8.0
650	3	embedded-tls		^0.8
2.4K	3	serde_at	optional	^0.8
600	1	reqwless		^0.8
600	2	ctap-types		^0.7
600	1	ppproto		^0.8.0
550	1	coap-message-demos		^0.7
550		foundation-firmware		^0.8
550	2	ockam_executor		^0.8
500	1	package-family-name		^0.8
500		foundation-urtypes		^0.8
500	1	w5500-tls		^0.8
2.1K	2	encdec-base	optional	^0.7.16
500	1	eb90		^0.7
500	2	loro-delta		^0.8.0
500	2	rmk		^0.8.0
490		embedded-huffman		^0.8.0
480	1	cyw43		^0.8.0
450	2	esp32-nimble		^0.8.0
450	1	edge-nal-std		^0.8
420		dmx512-rdm-protocol		^0.8.0
420	1	nrfxlib		^0.7
410		le-stream		^0.8
410		se05x		^0.7
390	3	apdu-dispatch		^0.7
380	1	cody-c		^0.8.0
370	1	async-io-mini		^0.8
350	4	generic-btree		^0.7.16
350		oktree		^0.8.0
310		person-sensor		^0.8.0
310		heapless_matrix		^0.8.0
290		stabilizer		^0.8
270		nucleo-h7xx		^0.7.16
250		smoltcp_null_modem		^0.8
240		microscpi		^0.8.0
230	2	ws2812-esp32-rmt-driver		^0.8
220		ublox-sockets		^0.7
220		etherage		^0.7.16
210		ekv		^0.8
210	5	embedded-nal-tcpextensions		^0.7
210	1	noproto		^0.8
200	1	mqttrust_core		^0.7
190	1	nrf-softdevice		^0.8.0
190	11	cortex-m-rtfm		^0.5.0
180		ais		^0.7
180	7	canadensis_core		^0.7.7
170	4	tracing-serde-structured		^0.7.10
170	1	wasm4-impl		^0.7.9
170		esp-hal-dhcp-server		^0.8.0
170		embedded-c-sdk-bind-hal		^0.8.0
160		pacmog		^0.8.0
160	2	trackball		^0.8.0
150		fido-authenticator		^0.7
150		zmodem2		^0.8.0
140	9	aranya-policy-vm		^0.7
900		serde-brief	optional	^0.8.0
140	14	wasmrs-codec		^0.7
140		ssd1331-async		^0.8.0
140		psf-rs		^0.8.0
140	3	canadensis_can		^0.7.0
140	1	liboscore-cryptobackend		^0.7
900	7	st7789	optional	^0.7
130		finny		^0.7
900	5	rmodbus	optional	^0.8.0
130		quectel-bg77		^0.7.3
130	2	canadensis		^0.7.0
130		stretch2		^0.7.9
130	1	canadensis_udp		^0.7.7
120		riscv-slic		^0.8.0
120	1	picoserve		^0.8.0
120	1	canadensis_serial		^0.7.7
110		canadensis_bxcan		^0.7
110	1	embedded-websocket		^0.7.16
110	3	signature_core		^0.7
110		rp-rs-radio-clock		^0.8
110		xdevs-no-std		^0.8
110	3	embedded-nano-mesh		^0.7.0
110	5	kaspa-wallet-core		^0.8.0
110		thermostat-eem		^0.8
110		max11300		^0.8
100	5	aranya-fast-channels		^0.7
100	3	ushell		^0.7.1
100		kiibohd-hall-effect-keyscanning		^0.7
100	2	aranya-runtime		^0.7
100	1	ethercrab-wire		^0.8.0
	1	udevrs		^0.7
	8	pgx		^0.7.16
800	3	flexiber	optional	^0.7.0
800	17	ockam_node	optional	^0.8
		rktk		^0.8.0
750	3	cbor-smol	optional	^0.7
		is31fl3743b		^0.7
		ethercrab		^0.8.0
		rx8900		^0.8
		usbd-ccid		^0.7
		esp-hal-mdns		^0.8.0
		ockam_entity		^0.7
		shproto-rs		^0.7.16
		writebuf-core		^0.7
		nutp		^0.8
700		wasm-msgpack	optional	^0.7
	1	edge-mdns		^0.8
	1	i2c-pio		^0.8.0
	2	edge-dhcp		^0.8
	3	mfrc522		^0.7
		roci		^0.8
		hal-sim		^0.8
		usbd-ctaphid		^0.7
		wio_terminal		^0.5
	7	kll-core		^0.7
		scalesocket		^0.8.0
	1	tracing-rtt		^0.8
	2	mwatch_kernel		^0.4.2
		stm32wb-hal		^0.5.3
	1	hid-io-core		^0.7
		ltc681x		^0.8.0
	1	embedded-nal-minimal-coaptcpserver		^0.7
	1	pinetime-mynewt		^0.5.1
		quicklog		^0.7.16
	3	rubble		^0.5.1
		Rusty_CryptoAuthLib		^0.5.5
		miniconf_cli		^0.8.0
	1	pinetime-lvgl		^0.5.3
	1	usbd-human-interface-device		^0.8
		nostr-nostd		^0.7.14
		zip_parser		^0.7
	1	edge-nal-embassy		^0.8
	3	trussed		^0.7
		urpc		^0.5.1
	2	phm-icd		^0.7.10
	2	pinetime-watchface		^0.5.1
		crosstrait		^0.8
		pigg		^0.8.0
		tinygif		^0.7.16
	1	hm11		^0.4.1
		hopter		^0.8
		prinThor		^0.8.0
		esp-ieee802154		^0.8.0
		keyberon		^0.5
	1	embedded-websocket-embedded-io		^0.8.0
		erdnuss-comms		^0.7.0
		nrf-modem-nal		^0.7.10
		trenchcoat		^0.7
	2	canadensis_data_types		^0.7.7
	1	fuga-json-seq-parser		^0.7.16
		max32660-hal		0.7.*
		nrf52-bin-logger		^0.5.1
		pca9539		^0.8.0
	2	sunset		^0.8
		esp-at-nal		^0.7.16
	1	expanse		^0.5.1
		nuttx-embedded-hal		^0.7.10
		sirena		^0.7
	2	klogger		^0.7.14
		veriform		^0.5
		logz		^0.7.13
		rustot		^0.7.0
		canboat-rs		^0.8.0
		sidh		^0.7.7
		emc2101		^0.8
		esp8266-at-driver		^0.7
	1	futex-queue		^0.7
		oath-authenticator		^0.7
	1	edge-http		^0.8
		google-cloud-iot-jwt		^0.7.9
550		ockam_transport_ble	optional	^0.8.0
		rart-rs		^0.7.10
		axum-postcard		^0.8
		esp8266-wifi-serial		^0.7
	1	lorawan-device		^0.7
		scd30		^0.4.2
		uhr		^0.4.2
	3	hid-io-protocol		^0.7
		rak811-at-driver		^0.7
		rand_pwd		^0.5.5
		core-serde-json		^0.5.0
		embedded-fps		^0.7
	1	moonboot		^0.7
		verdigris		^0.6
		watchface		^0.5
		zipng		^0.7.16
		alg-grid		^0.5
		anachro-forth-core		^0.7.8
	1	canadensis_pnp_client		^0.7.7
		infinity-sampler		^0.8
		robokit		^0.7
	3	ctaphid-dispatch		^0.7
		itla		^0.7
	1	jh71xx-hal		^0.7
		leak-detect-allocator		^0.5.4
		mqtt-sn		^0.7.7
		orouter-serial		^0.7
		senml-deser		^0.7
		svisual		^0.7
		vesc-comm		^0.4.1
		algo_no_std		^0.7.16
		es-wifi-driver		^0.7
		factbird-common		^0.7
		fuga-remo-api		^0.7.16
	2	mqttrust		^0.7
		mvstore		^0.7
		rfm69-async		^0.7.16
		ufmt-utils		^0.7.16
		anachro-server		^0.5.5
	2	gctex		^0.8.0
	1	graphite_magma		^0.7.15
		mnemos		^0.7.10
		synth-utils		^0.7
	1	vhrdcan		^0.5.6
		crankstart		^0.6.1
		digital-filter		^0.5.1
	3	drogue-network		^0.5
		gmqtt		^0.7.7
		handdrawn-watchface		^0.5.1
		log-to-defmt		^0.7
	1	lpc55-rtic		^0.6.0
		mcumeter		^0.7
	1	monster_chess		^0.8.0
		timesource		^0.7.8
		ublox-cellular-rs		^0.7
		blinq		^0.7.0
	2	dcs2		^0.7.16
		esp-at-driver		^0.6.1
		esp32-wroom-rp		^0.7.16
		nmea-0183-validator		^0.7.10
	1	rucos		^0.7
		state-governor		^0.7.4
		booster		^0.8
		eui-no-std		^0.5
		mks979b		^0.7.10
		multi-mission-library-rs		^0.8.0
		mwatch-kernel-stm32l4		^0.4.2
		tiny-nmea		^0.7.5
		ublox-short-range-rs		^0.5
		wire4		^0.5.2
	2	anachro-icd		^0.5.5
		ansi_parser_extended		^0.8.0
		crdt-richtext		^0.7.16
	1	drogue-ffi-compat		^0.5.5
		edge-std-nal-async		^0.8
		junctor		^0.5.5
		keytokey		^0.7
		lpwan		^0.5.5
		moondancer		^0.8.0
		n2k		^0.5.5
		phm-worker		^0.7.10
		rustuino		^0.7.7
		wurth-calypso		^0.7.16
		coap-gatt-utils		^0.7.16
		embassy-net-adin1110		^0.8
		itsdns		^0.7
		kiibohd-core-ffi		^0.7
		riot-wrappers		^0.8
		rustworks		^0.7
		ssd1362		^0.5
		usbd-ethernet		^0.7
		ad7147		^0.7.16
	2	byte-slab		^0.7.5
	1	embedded-update		^0.7
	3	hmac-sha		^0.7
	1	ssp		^0.7
		vax-number		^0.7
	1	a4-core		^0.7.8
		ascii-osd-hud		^0.6
		can_aerospace_lite		^0.7.4
		cheetah-game-realtime-protocol		^0.7.16
		choreographer		^0.7.1
		coap-zero		^0.7
		compact-map		^0.8
		drogue-rak811		^0.5.5
	1	kiibohd-hid-io		^0.7.16
		myser		^0.7.15
		smbus-adapter		^0.8
		bandsocks-sand		^0.5
		blipper		^0.5.1
		dango-core		^0.7.16
	1	dmx-rdm		^0.8
		drgdfu		^0.7
		drogue-es-wifi		^0.5.6
		drogue-http-client		^0.5
		embassy-net-esp-hosted		^0.8
		esp-hal-mfrc522		^0.8.0
	2	graphite_server		^0.7.15
		heapless_topo		^0.8.0
		lc3-codec		^0.7.10
		light-cli		^0.4.2
	1	ockam_signature_core		^0.6
		rsa_heapless		^0.8.0
	1	usb-pd		^0.7.16
		alrulab-core		^0.8.0
		at-cryptoauth		^0.7
		barebones-watchface		^0.5.1
		bl602-sdk		^0.7.3
		blues-notecard		^0.7
		disco-rs		^0.7
		drogue-esp8266		^0.5.5
		drogue-tls		^0.7
		embedded-exfat		^0.7
		hc14-at-rs		^0.7
	2	kiibohd-hall-effect		^0.7
	1	kiibohd-hid-io-ffi		^0.7.10
	1	kiibohd-usb		^0.7
		knetrs		^0.7.16
	1	minireq		^0.8
	1	phm		^0.7.10
	1	purezen		^0.4
	3	serial-settings		^0.8
		fusb302b		^0.7.16
		hwatch-ansi-parser		^0.6.1
		is31fl3733		^0.7.16
		kolibri-embedded-gui		^0.7
		norfs		^0.7
		rs-matter		^0.7.16
		seeed-lora-e5-at-commands		^0.8.0
		sma-proto		^0.8.0
		smoltcp-rmodbus		^0.8.0
		socketcand		^0.8.0
		stratum-v1		^0.8
		sunset-async		^0.8
		tfmt		^0.8.0
480	1	esp-partition-table	optional	^0.8
480	1	edge-executor	optional	^0.8
450	1	littlefs2-core	optional	^0.7
420		rw-exact-ext	optional	^0.8
230	5	postcard-schema	optional	^0.7
160		unchecked-std	optional	^0.8.0
130	2	ser-write	optional	^0.8
110		pybadge-high	optional	^0.7.16
100		embedded-msgpack	optional	^0.7
100	2	ft6x06	optional	^0.7
		msgpck	optional	^0.7.16
		ockam_vault_core	optional	^0.7
		serde-csv-core	optional	^0.7.16
	1	channel-bridge	optional	^0.8
		satrs	optional	^0.7
		satrs-core	optional	^0.7
	2	postcard-bindgen-core	optional	^0.8.0
		bin-utils	optional	^0.7.16
	1	blipper-shared	optional	^0.5.5
		buf_sized	optional	^0.8.0
		creature_feature	optional	^0.7.16
		edge-frame	optional	^0.8
		fastprio	optional	^0.7.16
		flex-dns	optional	^0
	2	kiibohd-keyscanning	optional	^0.7
		kvs	optional	^0.7.15
		macbinary	optional	^0.7.16
	3	micropb	optional	^0.8
		mipidsi-async	optional	^0.7.16
		nb-executor	optional	^0.7.10
		no_alloc	optional	^0.5.5
		ockam_credential	optional	^0.6
		orouter-wireless	optional	^0.7
		sacn-unofficial	optional	^0.5.3
		simple-tlv	optional	^0.6.0
		stor	optional	^0.7.9
		systemview-target	optional	^0.7
312K	78	pretty-hex	dev	^0.8
8.9K	15	rp-pico	dev	^0.7.16
5.8K	44	stm32f4xx-hal	dev	^0.8
5.6K	6	nu-pretty-hex	dev	^0.8
3.6K	13	rtic	dev	^0.8
1.1K	32	stm32f1xx-hal	dev	^0.7.16
1.1K		xmc4-hal	dev	^0.8.0
950		gsw	dev	^0.7
900	7	miniconf	dev	^0.8.0
750	1	atoi_radix10	dev	^0.7
700	3	serde-indexed	dev	^0.7.16
700		riscv-peripheral	dev	^0.8.0
600	1	esp32s3-hal	dev	^0.8.0
550	2	esp32c3-hal	dev	^0.8.0
500	1	esp32s2-hal	dev	^0.8.0
500	5	esp32-hal	dev	^0.8.0
420	1	lpc55-hal	dev	^0.7
340	2	micromap	dev	^0.8.0
260	1	stm32l0xx-hal	dev	^0.7.1
250	2	toad-msg	dev	^0.7
230	1	esp32c6-hal	dev	^0.8.0
210		feather_m0	dev	^0.7
210		feather_m4	dev	^0.7
190		esp32c2-hal	dev	^0.8.0
140		itsybitsy_m0	dev	^0.7
		esp32h2-hal	dev	^0.8.0
	1	kwap-msg	dev	^0.7
		sized-dst	dev	^0.8
		dyn_phy	dev	^0.8
	6	stm32l4xx-hal	dev	^0.5
		p1am_100	dev	^0.7
		firmware-controller	dev	^0.7
	2	ufmt_float	dev	^0.7
	1	lorawan	dev	^0
	2	canadensis_encoding	dev	^0.7.0
	2	stm32f1xx-hal-bxcan	dev	^0.5.6
		adafruit-kb2040	dev	^0.7.16
	1	sh1106	dev	^0.7.10
		mwatch-sdk	dev	^0.4.1
	1	dwm1001	dev	^0.7.8
		pulau-rs	dev	^0.7.16
	1	flem	dev	^0.7
		n32g4xx-hal	dev	^0.8
		canadensis_macro	dev	^0.7.7
		caprand	dev	^0.8
		ch58x-hal	dev	^0.8.0
		cmim	dev	^0.5.1
		htpa32x32d	dev	^0.4.0
		ds1302	dev	^0.6
		lpc55s6x-hal	dev	^0.5
		oled_async	dev	^0.7.10
		todc-mem	dev	^0.7