Business Source License
| Author | MariaDB plc |
|---|---|
| Latest version | 1.1 |
| Publisher | MariaDB plc |
| Published | 2024 (version 1.1) |
| SPDX identifier | BUSL-1.1 |
| Debian FSG compatible | No |
| FSF approved | No |
| OSI approved | No |
| GPL compatible | No |
| Copyleft | No |
| Website | https://mariadb.com/bsl11/ |
The Business Source License (SPDX id BUSL-1.1) is a software license which publishes source code but limits the right to use the software to certain classes of users. The BUSL is not an open-source license, but is a source-available license that also mandates an eventual transition to an open-source license. This characteristic has been described as a compromise between traditional proprietary licenses and open source.
The originator of the BUSL is MariaDB plc, where it is used for the MaxScale product, not for the flagship MariaDB.