Similar to SQL_Server_Express
IMS
IBM Information Management SystemIndexed Database API
Indexed Database APIIBM Informix
InformixInformix Dynamic Server
IBM Informix Dynamic ServerInformix Universal Server
Ingres
Ingres (database)Interstage Shunsaku Data Manager
Kdb+
Kdb+MDB Tools
MDB ToolsMicrosoft Visual FoxPro
Visual FoxProMRDB
NeoCore
NoSQL
NoSQL▲1 trendsOpenOffice.org
OpenOffice.org▲1 trendsOracle Rdb
Oracle RdbQDBM
Quorum
Quorum (distributed computing)▼-1 trendsSAP BW/4HANA
SAP IQ
SAP IQSolidDB
SolidDB▼-1 trendsSQL Anywhere
SQL AnywhereSQL/DS
IBM SQL/DSSQLite
SQLite▲1 trendsSybase Adaptive Server Enterprise
Sybase SQL Server
Symfoware Server
System R
IBM System RValkey
Valkey