Legal
Open Source Licenses
Last updated: August 26, 2026
SQL Practice is built on open-source work by other people. This page lists what the site ships to your browser, who made it, and the licence it is used under. Each of these licences requires that its copyright notice travels with the software, which is what this page is for.
Everything else on this site — the tutorials, the practice exercises and their solutions, the sample database, and the interface code — is our own original work.
AlaSQL
The SQL engine that parses and runs every query on this site, inside your own browser. Served from
/assets/alasql.min.js.
- Copyright
- © 2014–2025 Andrey Gershun & Mathias Wulff
- Licence
- MIT License
- Project
- alasql.org
Tailwind CSS
The CSS framework this site's styling is built from. Compiled ahead of time into
/assets/site.css;
no Tailwind JavaScript runs in your browser.
- Copyright
- © Tailwind Labs, Inc.
- Licence
- MIT License
- Project
- tailwindcss.com
Inter
The typeface used for all body and heading text. Self-hosted from
/assets/fonts/
rather than loaded from a font CDN, so your browser does not contact a third party to render this page.
- Copyright
- © The Inter Project Authors (Rasmus Andersson and contributors)
- Licence
- SIL Open Font License 1.1
- Project
- rsms.me/inter
JetBrains Mono
The monospaced typeface used for SQL code, the query editor and result tables. Also self-hosted from
/assets/fonts/.
- Copyright
- © The JetBrains Mono Project Authors (JetBrains s.r.o.)
- Licence
- SIL Open Font License 1.1
- Project
- jetbrains.com/lp/mono
About the MIT License
AlaSQL and Tailwind CSS are both distributed under the MIT License. It permits anyone to use, copy, modify and distribute the software, including commercially, on the condition that the copyright notice and permission notice are preserved. The software is provided "as is", without warranty of any kind, and its authors are not liable for any claim or damages arising from its use.
About the SIL Open Font License
Inter and JetBrains Mono are both distributed under version 1.1 of the SIL Open Font License. It permits the fonts to be used, studied, modified and redistributed freely, including bundled with a website as they are here. The fonts may not be sold on their own, and any modified version may not use the original reserved font name. The fonts are provided without warranty of any kind.
Something missing?
If you believe something we ship is not credited correctly here, please tell us and we will fix it. Contact details are on the About page.