Realtime and Sync Databases

	A	B	C	D	E	F	G	H	I	J	K	L	N	O	P	Q	R	S
1	project	run on browser	local first	syncs / replicates	subscriber queries	persistence	CRDT	immutable / history query	run on server	incremental queries	query lang	host lang	⭐️	access policy	link to state	license	business	schema

2	https://github.com/amark/gun	✅	✅	✅	✅	gun server	✅	❌	✅	❌	?	Javascript		❌?	❌	MIT / Apache 2.0	open source / consulting
3	https://electric-sql.com/	✅	✅	✅	✅	postgres	✅	❌	✅	❌	SQL	Javascript / Elixir		❌	❌	Apache 2.0	open source
4	https://github.com/Nozbe/WatermelonDB	✅	✅	✅	✅	custom	❌	❌	✅	❌	ORM / raw SQL	Javascript / Objective C / Kotlin		❌	❌	MIT	open source	yes
5	https://tinybase.org/	✅	✅	✅	✅	custom	❌	❌	✅	❌	key/value, table, TinyQL	Typescript		❌	❌	MIT	open source	yes
6	https://github.com/tonsky/datascript	✅	✅	✅	❌	datomic / datahike	❌	✅	❌	❌?	Datalog	Clojurescript		❌	❌	EPL-1.0	open source	yes
7	https://pouchdb.com/	✅	✅	✅	✅	couchdb	❌	❌?	❌	❌	Mango / Mapreduce			❌	❌
8	https://github.com/replikativ/datahike	❌	❌	✅	❌	⛔️	❌	✅	✅	❌	Datalog	Clojure		❌	❌	EPL-1.0	open source
9	https://couchdb.apache.org/	❌	❌	✅	✅	⛔️	❌	✅	✅	❌	Mango / Mapreduce	Erlang		✅	❌
10	https://github.com/kettle11/tangle	✅	❌	✅			❌	❌		❌	❌
11	https://github.com/techfort/LokiJS	✅	✅	✅	✅	custom		❌	❌	❌	Mango	Javascript		❌	❌	MIT	open source
12	https://vlcn.io/
13	https://github.com/vlcn-io/cr-sqlite
14	https://homebase.io/	✅	✅	✅	✅			✅	🧑‍🍳	❌	Mongo-like	Javascript		❌	❌	❌	hosted	no
15	https://replicache.dev	✅	✅	✅	✅			❌	🧑‍🍳✅	❌	Javascript	Javascript		❌	❌	❌	hosted	no
16	https://rxdb.info/	✅	✅	✅	✅			❌	✅	❌	mango style	Typescript		❌	❌	Apache 2.0	open core	yes
17	https://github.com/ccorcos/tuple-database	✅	✅	❌?	✅			❌	😒	❌	Directly read index	Typescript		❌	❌	unknown	?	none
18	https://docs.instantdb.com/	✅	✅	✅	✅			❌	🧑‍🍳	❌?	InstantQL (GraphQL)	Javascript		✅	❌	❌	hosted
19	https://stateb.us/	✅	✅	✅	✅			❌	✅	❌	Coffeescript	Javascript		❌	✅	unknown	open source	no
20	https://logux.io/	✅	✅	✅	✅	✅		❌	❌	❌
21	https://firebase.google.com/	✅	✅	✅	✅			❌	🧑‍🍳	❌	Javascript	Javascript / Objective C / Kotlin		❌	❌	❌	hosted
22	https://driftdb.com/	✅	❌	✅	✅			❌	✅	❌	?	Javascript / Rust		❌	❌	MIT	open source
23	https://github.com/wotbrew/relic	✅	❌	❌	✅			❌	✅	✅	SQL-like	Clojure / Clojurescript		✅	❌	MIT	open source / consulting
24	https://github.com/jlongster/absurd-sql	✅	✅	❌	❌			❌	❌	❌	SQL	Javascript		❌	❌	MIT	open source
25	https://duckdb.org	✅	❌	❌	❌			❌	✅	❌	SQL	Javascript		❌	❌	MIT	open source
26	https://www.datomic.com/	❌	❌	✅	❌?			✅	🧑‍🍳	❌?	Datalog	Clojure		❌	❌	❌	hosted	yes
27	https://supabase.com/	❌	❌	🧑‍🍳?	✅			❌	🧑‍🍳	❌?	f	Javascript / Clojurescript		❌	❌	Apache 2.0	open core / hosted
28	https://github.com/xtdb/xtdb	❌	❌	🧑‍🍳?	❌			✅	✅	❌	?	Clojure / Kotlin		❌	❌	MIT	open source / consulting
29	https://materialize.com/	❌	❌	🧑‍🍳	✅			❌	🧑‍🍳	✅	SQL			❌	❌	❌
30	https://www.convex.dev/	❌	❌	🧑‍🍳?	✅			❌	🧑‍🍳	❌	Mango	Javascript		❌	❌
31	https://layrjs.com/
32	https://github.com/evoluhq/evolu
33	https://pocketbase.io/
34
35	https://syndicate-lang.org/about/
36	https://nextgraph.org/
37	https://www.meteor.com/ (minimongo)	✅										Javascript				MIT	hosted
38	https://github.com/aquametalabs/aquameta								😨			Postgres		✅?		GPL-3.0	open source
39	https://github.com/obi1kenobi/trustfall
40	https://github.com/Automattic/mydb
41	https://sharejs.org/
42	https://github.com/sixthnormal/clj-3df									✅
43	https://github.com/comnik/declarative-dataflow									✅
44
45	https://nostr.com/
46	https://peergos.org/
47
48	https://aphrodite.sh/
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