VoltDB
| Volt Active Data | |
|---|---|
| Developer(s) | Volt Active Data | 
| Initial release | May 25, 2010 | 
| Stable release | 11.3
   / April 21, 2022 | 
| Repository | |
| Written in | Java, C++ | 
| Operating system | Linux, macOS | 
| Platform | Java | 
| Type | RDBMS | 
| License | GNU Affero General Public License v3, VoltDB Proprietary License | 
| Website | voltactivedata | 
Volt Active Data (formerly VoltDB) is an in-memory database designed by Michael Stonebraker, Sam Madden, and Daniel Abadi.
It is an ACID-compliant RDBMS that uses a shared-nothing architecture, and is derived from work done by Stonebraker on OLTP system performance and optimization.
It is available in both enterprise and community editions. The community edition is licensed under the GNU Affero General Public License.