r2d2

r2d2 is used at run time in 484 crates (of which 105 optionally). It is a direct run-time dependency in 262 crates. It's used only as a dev dependency in 14 crates (of which 5 directly).

Number of dependers	r2d2 version	Downloads/month
479	0.8.10	364K
18	0.7.4	64
1	0.6.4	0

Depender (with downloads and own rev deps)			r2d2 version
1.1M	464	redis	optional	^0.8.10
426K	414	diesel	optional	>=0.8.2, <0.9.0
410K	164	cached	optional	^0.8
78K	59	r2d2_sqlite		^0.8
9.0K	36	r2d2_postgres		^0.8
24K	20	duckdb	optional	^0.8.9
4.9K	10	rocket_sync_db_pools		^0.8
4.7K	20	r2d2_redis		^0.8
4.4K		trane		^0.8.10
4.1K	15	r2d2_mysql		^0.8.9
3.9K	6	memcache		^0.8
9.7K	82	rocket_contrib	optional	^0.8
2.4K	1	hc_r2d2_sqlite		^0.8
2.1K	14	r2d2-diesel		>=0.7, <0.9
2.0K	2	gremlin-client		^0.8.3
1.9K	4	holochain_sqlite		^0.8
6.3K	1	burn-dataset	optional	^0.8.10
1.6K		flashpoint-archive		^0.8
1.6K	2	r2d2-oracle		^0.8
4.3K		datafusion-table-providers	optional	^0.8.10
1.0K		liboxen		^0.8.10
1.0K		seshat		^0.8.9
800	2	skytable		^0.8.10
650	1	pavexc		^0.8
650	1	versatiles_container		^0.8.10
550		unidb_pgsql		^0.8.10
480	4	cdrs		^0.8.7
370		yahoo-finance-symbols		^0.8.10
330		mirams		^0.8
270	3	r2d2-memcache		^0.8
260		rust-query		^0.8
250		r2d2_redis_cluster		^0.8
240		chia-seeder-light		^0.8.10
1.2K		medullah-web	optional	^0.8.10
230		r2d2_sqlite_neonphog		^0.8
200	6	rustorm		^0.8
190		allms		^0.8.10
170	1	r2d2_odbc		^0.8
170		duckdb-server		^0.8
130		cnctd_server		^0.8.10
120		r2d2-cryptoki		^0.8.10
110		rdfox-rs		^0.8.1
100	1	observer		^0.8
800		versatiles-lib	optional	^0.8.10
100	3	realm		^0.8.5
		tokio-newrelic		^0.8.8
		r2d2-clickhouse		^0.8.9
	1	aura-core		^0.8
		aura-pm		^0.8
		godata_lib		^0.8.10
750		rusty_vault	optional	^0.8.9
		tara		^0.8.9
	1	r2d2_cypher		^0.8
		mongodb_cwal		^0.8
	1	rdf-store-rs		^0.8.10
	2	r2d2-mongodb		^0.8.3
		rustyroad		^0.8.10
		raider-server		^0.8
	1	mouscache		^0.8
		labrador		^0.8.9
		openai-safe		^0.8.10
		headless-talk		^0.8.10
		r2d2-aykroyd		^0.8
		seiri		^0.8
		tokio-diesel		^0.8.7
		nanocld		^0.8
		nickel-diesel		^0.8
	2	r2d2-alpm		^0.8
		r2d2-lapin		^0.8.9
		Rnjw		^0.8.10
		rs_infras		^0.8.10
		opencloudtiles		^0.8.10
		async-diesel		^0.8.7
	2	erosbag-core		^0.8.10
		test-mueQu9Oz		^0.8
		mbtileserver		^0.8
	1	r2d2-sqlite3		^0.8
		ibm_db		^0.8
		roa-diesel		^0.8
		vsmtp-plugin-ldap		^0.8.10
		r2d2_sqlite_pool		^0
		hecate		^0.8.3
		nostr-rs-relay		^0.8
	1	mob_server		^0.7
		r2d2_redis2		^0.8
		kiwi-talk-client		^0.8.10
		minimal-eventstore		^0.8.10
		rustomword		^0.8.9
	1	orientdb-client		^0.8.5
		r2d2_arangors		^0.8.9
		rsmq		^0.8.1
		swgoh_farming_bot		^0.8.9
		trotp		^0.8.8
		unidb_oracle		^0.8.10
	2	cnctd_redis		^0.8.10
		repos		^0.7
		riftenlabs-indexer		^0.8.10
	1	slog-redis		^0.8.9
		amitu_base		^0.8.5
		mongodb-helper		^0.8.8
		nickel_postgres		^0.7.0
	1	bronzedb-client		^0.8
		deadpool-r2d2		^0.8.9
	3	df_st_db		^0.8
		lembas		^0
		axum-sqlite		~0.8
		diect-rs		^0.8.9
		gerasdb		^0.8.9
		kanidm		^0.8
		meep		^0.8
		rdfox		^0.8.1
		actix-diesel		^0.8.3
		db-derive		^0.8
		r2d2-influxdb		^0.8
		ruspk		^0.8
		asta-jobboerse-api		^0.8.2
	2	fistinc-errors		^0.8.9
		shorust		^0.8.9
		telegram-raf		^0.8.10
		catenary-backend		^0.8.10
	1	chimes-utils		^0.8.10
	1	fistinc-diesel-utils		^0.8.9
		nostr-sdk-sqlite		^0.8
		raspberry-web		^0.8.4
		rocket_sqlite_rw_pool		^0.8
		async-session-r2d2		^0.8
	2	c3p0_pool_mysql		^0.8
	2	c3p0_pool_sqlite		^0.8
		cargo-registry		^0.7.0
	3	dbui-database		^0.8.6
		farm		^0.8.0
		lares		^0.8.9
	1	qrlew		^0.8
		redis_r2d2		^0.8
		rokkett-logger		^0.8.10
		fowner		^0.8.8
		r2d2_pulsar		^0.8.2
		dhb-postgres-heroku		^0.8
		gnostr-relay		^0.8
		graphannis-webservice		^0.8
		r2d2-jfs		^0.8
		unidb_odbc		^0.8.9
		vagabond		^0.8.4
	1	bicycle_sqlite		^0.8.10
		prose_chan		^0.8.2
		r2d2-ldap		^0.8
		c3p0_pg_migrate		^0.8
		indradb-postgres		^0.8
		magnet_app		^0.7
		metriki-r2d2		^0.8
		pair_stack		*
		punch-web		^0.8
	1	qzsaa		^0.8.10
		r2d2-influx_db_client		^0.8
		r2d2_couchdb		^0.7
		r2d2_gluster		~0.8
		world-tables-server		^0.8
		bandcamp_recommendations		^0.8
	2	c3p0_pool_pg		^0.8
		cqrs-postgres		^0.8.3
		finchers-r2d2		^0.8.2
		instaclone_backend		^0.8.2
		r2d2-nats		^0.8.2
		rhwd		^0.8.5
		spaceapi-dezentrale-server		^0.8.7
		tiny-docs-se		^0.8
		webapp-backend		^0.8.5
		youkebox		^0.7.4
		akita		^0.8.9
		birdseed		^0.8.3
		block-tools		^0.8.9
		bulwark-wasm-host		^0.8.10
		butane_rocket_pool		^0.8.10
		c3p0_pg_015		^0.8
		cdrs_temp		^0.8.7
		clia-rustorm		^0.8.9
		danmuji		^0.8.5
	1	khalzam		^0.8.5
		r2d2-beanstalkd		^0.8.9
		reql-io		^0.7
		vsmtp-plugin-mysql		^0.8.10
		aries		^0.7
		bassment		^0.8
		cookbook		^0.8.9
		cwab		^0.8.0
		ruipay		^0.8.9
		beary		^0.8.10
		bloom-server		^0.8
		contraband_diesel		^0.8.8
		diesel-rocket-pg		^0.8.10
		howtocards_backend		^0.8.2
		iron_rusqlite_middleware		^0.7.3
		r2d2-bolt		^0.8.8
		r2d2_firebird		^0.8.9
		r2d2_redis_patch		^0.8
		bailongma		^0.8
		diesel-crud		^0.8.8
		distributed_arcade		^0.8.10
		dlphn		^0.8.2
		enigmatick		^0.8
		hetnetdb		^0.8.9
		kbve		^0.8.9
		nickel_sqlite		^0.8
		r2d2-testconnection		^0.7
		r2d2_odbc_api		^0.8.10
		saptest		^0.8.10
		session		^0.7
		sidekiq-rs		^0.7
		spaceapi-server		^0.8.7
		sqlite3builder		^0.8.8
	2	sqlsrv		^0.8.10
		sso		^0.8
500	2	svc-error	optional	>=0.8
		torrust-tracker		^0
		r2d2-duckdb		^0.8
		r2d2_redis_cluster2		^0.8
400		kash	optional	^0.8
290	1	acts	optional	^0.8.10
230		hdbconnect	optional	^0.8
200	1	thrift-pool	optional	^0.8.10
200	1	connectorx	optional	^0.8
110	1	iron-sessionstorage	optional	^0.7.1
		redis-sk	optional	^0.8.8
	1	libtaos	optional	^0.8
	6	garage_db	optional	^0.8
		limiting-factor	optional	^0.8.10
		actix-jwt-session	optional	^0.8.10
		actix-tools	optional	^0.8
		binlog	optional	^0.8.9
	2	butane_core	optional	^0.8
		c3p0_mysql	optional	^0.8.8
		c3p0_pg	optional	^0.8.8
		c3p0_sqlite	optional	^0.8.8
		db-pool	optional	^0.8.10
		deuterium_orm	optional	*
		diesel-x86	optional	>=0.8.2, <0.9.0
		dist_lock	optional	^0.8.10
		duckdb-quan	optional	^0.8.9
	1	duckdb-queryscript	optional	^0.8.9
	6	ekg-error	optional	^0.8.1
		ekg-sparql	optional	^0.8.1
	3	elephantry	optional	^0.8
		ellidri	optional	^0.8
		fluffici_redis	optional	^0.8.8
		haro	optional	^0.8.10
		hextacy	optional	^0.8.10
		iron-sessionstorage-0-6	optional	^0.8
		iron-sessionstorage2	optional	^0.7.1
		krill	optional	^0.8.9
		limitador	optional	^0.8
		mco-redis-rs	optional	^0.8.8
		ood_persistence	optional	^0.8
		orcinus	optional	^0.8.10
		postgres-tx-retry	optional	^0.8
		redis_wasi	optional	^0.8.8
		salak_factory	optional	^0.8
		serwus	optional	^0.8
	4	taos-query	optional	^0.8.9
		tdf_config	optional	^0.8
	1	trezm-redis	optional	^0.8.8
	1	valensas-actuator	optional	^0.8.10
650	1	ruarango	dev	^0.8.10
	3	rsfbclient	dev	^0.8.9
	1	rudp2p	dev	^0.8
	2	butane	dev	^0.8
		rabbit_borough	dev	^0.8.10
		resque	dev	^0.7