Licenses
SkipDB is deliberately open on both sides — the software and the data — so the project can never be quietly turned proprietary.
AGPL-3.0
The application source code is licensed under the GNU Affero General Public License v3.0. Anyone who runs a modified version as a network service must make their source available — closing the SaaS loophole.
ODbL 1.0
The database and API contents are licensed under the Open Database License 1.0, unless you have explicit written permission otherwise. Use it with attribution and share alike — any derivative database must also be released under ODbL 1.0.
Read the full license →Why two licenses?
Code and data are different things. AGPL keeps the software open even when run as a hosted service. ODbL is designed specifically for databases — it requires attribution and that any derivative database be shared under the same terms, preventing anyone from extracting the data and locking it away in a proprietary product. The public data dump makes that guarantee concrete.