Databases with Log-Structured Merge Tree Indexes


	AsterixDB OLAP AI-Assisted	2009	Document / XML	B+Tree, Inverted Index (Full Text), Log-Structured Merge Tree, R-Tree	OLAP AI-Assisted
	BadgerDB AI-Assisted	2017	Key-Value	Log-Structured Merge Tree	AI-Assisted
	BigchainDB Abandoned Blockchain	2015	Document / XML, Key-Value	Skip List, B+Tree, Log-Structured Merge Tree	Abandoned Blockchain
	chDB OLAP Acquired Company AI-Assisted	2023	Relational	Log-Structured Merge Tree	OLAP Acquired Company AI-Assisted
	ClickHouse OLAP AI-Assisted	2016	Relational	Log-Structured Merge Tree	OLAP AI-Assisted
	CockroachDB NewSQL OLTP AI-Assisted	2014	Relational	Log-Structured Merge Tree	NewSQL OLTP AI-Assisted
	DGraph Acquired Company AI-Assisted	2015	Graph	Inverted Index (Full Text), Log-Structured Merge Tree	Acquired Company AI-Assisted
FO	ForestDB Abandoned	2013	Key-Value	B+Tree, Patricia/Radix Trie, Log-Structured Merge Tree	Abandoned
	InfluxDB Time-Series AI-Assisted	2013	Column Family / Wide-Column	Inverted Index (Full Text), Log-Structured Merge Tree	Time-Series AI-Assisted
	IoTDB Time-Series AI-Assisted	2017	Hierarchical	Log-Structured Merge Tree	Time-Series AI-Assisted
	k4 Time-Series Abandoned	2024	Key-Value	Log-Structured Merge Tree, Skip List	Time-Series Abandoned
	LedisDB Abandoned NoSQL	2014	Key-Value	Skip List, Log-Structured Merge Tree	Abandoned NoSQL
	LevelDB MMAP	2011	Key-Value	Log-Structured Merge Tree, Skip List	MMAP
	MobyDB	2026	Key-Value	Log-Structured Merge Tree
	NamiDB NoSQL	2026	Graph	Log-Structured Merge Tree	NoSQL
	nessDB Abandoned	2011	Key-Value	Log-Structured Merge Tree	Abandoned
	ObsessionDB OLAP Hosting Service	2024	Relational	Log-Structured Merge Tree	OLAP Hosting Service
	Pebble AI-Assisted	2018	Key-Value	Log-Structured Merge Tree	AI-Assisted
	RisingLight	2021	Relational	Log-Structured Merge Tree
	RocksDB Forked Code OLTP	2012	Key-Value	Log-Structured Merge Tree	Forked Code OLTP
	SereneDB OLAP OLTP Search Engine AI-Assisted	2024	Relational	Inverted Index (Full Text), Log-Structured Merge Tree	OLAP OLTP Search Engine AI-Assisted
	Sklad NoSQL	2024	Key-Value	Log-Structured Merge Tree	NoSQL
	Speedb Forked Code Acquired Company	2020	Key-Value	Log-Structured Merge Tree	Forked Code Acquired Company
	SSDB Abandoned	2013	Key-Value	Skip List, Log-Structured Merge Tree	Abandoned
	SwayDB Abandoned	2018	Key-Value	Log-Structured Merge Tree	Abandoned
	SWC-DB Abandoned	2019	Column Family / Wide-Column, Key-Value	Block Range Index (BRIN), Log-Structured Merge Tree, Skip List	Abandoned
TE	Tera Abandoned	2014	Column Family / Wide-Column	Log-Structured Merge Tree	Abandoned
	TerarkDB Forked Code Acquired Company	2016	Key-Value	Log-Structured Merge Tree	Forked Code Acquired Company
	tsink Time-Series	2025	—	Log-Structured Merge Tree	Time-Series
	VictoriaMetrics Time-Series AI-Assisted	2018	Column Family / Wide-Column	Inverted Index (Full Text), Log-Structured Merge Tree	Time-Series AI-Assisted
	WiredTiger Acquired Company AI-Assisted	2008	Key-Value	B+Tree, Log-Structured Merge Tree	Acquired Company AI-Assisted
	YugabyteDB Forked Code OLTP AI-Assisted	2016	Key-Value, Relational	Log-Structured Merge Tree	Forked Code OLTP AI-Assisted