Comparison of MySQL database engines

This is a comparison between notable database engines for the MySQL database management system (DBMS). A database engine (or "storage engine") is the underlying software component that a DBMS uses to create, read, update and delete (CRUD) data from a database.

Name	Vendor	License	Transactional	Under active development	MySQL versions	MariaDB versions^[1]
Archive	Oracle	GPL	No	Yes	5.0 - present	5.1 - present
Aria	MariaDB	GPL	No	Yes	None	5.1 - present
Berkeley DB	Oracle	AGPLv3	Yes	No	? - 5.0	None
BLACKHOLE	Oracle	GPL	No	Yes	5.0 - present	5.1 - present
CONNECT	MariaDB	GPL	No	Yes	None	10.0 - present
CSV	Oracle	GPL	No	Yes	5.0 - present	5.1 - present
Falcon	Oracle	GPL	Yes	No	?	None
Federated	Oracle	GPL	?	No	5.0 - present	?
FederatedX	MariaDB	GPL	Yes	No	None	? - present
ColumnStore (formerly InfiniDB)	Calpont	GPL	Yes	Yes	None	10.5.4 - present
InnoDB	Oracle	GPL	Yes	Yes	3.23 - present	5.1 - present ^[2]
MEMORY	Oracle	GPL	No	Yes	3.23 - present	5.1 - present
Mroonga	Groonga Project	GPL	No	Yes	None	10.0 - present
MyISAM	Oracle	GPL	No	No	3.23 - present	5.1 - present
MyRocks	Facebook	GPLv2	Yes	Yes	None	10.2 - present
NDB	Oracle	GPLv2	Yes	Yes	?	None
OQGRAPH	Oracle	GPLv2	No	No	None	5.2 - present
S3	MariaDB	GPL	No	Yes	None	10.5 - present
SEQUENCE	MariaDB	GPL	No	Yes	None	10.0 - present
Sphinx	Sphinx Technologies Inc.	GPL	No	No	None	5.2 - present
SPIDER	Kentoku Shiba	GPL	Yes	Yes	None	10.0 - present
TempTable	Oracle	GPL	No	Yes	8.0 - present	None
TokuDB	Percona	Modified GPL	Yes	No	None	5.5 - 10.6^[3]
XtraDB	Percona	GPL	Yes	Yes	None	5.1 - 10.1^[2]

References