Open Source Licenses
Last generated: 2026-07-26
This website is built with open-source software and assets. We are grateful to the open-source community and provide the attributions below in accordance with the relevant licenses. This page is organized into software and assets that are delivered to your browser (front-end) and tooling used only to build the site (back-end / build).
Fonts Delivered to Your Browser (Front-end)
The following open-source fonts are delivered to your browser — either self-hosted by this website or loaded from Google Fonts:
- Lexend (self-hosted, and loaded from Google Fonts on some pages) — Licensed under the SIL Open Font License, Version 1.1. Copyright © The Lexend Project Authors. "Lexend" is a Reserved Font Name under the OFL. Source: github.com/googlefonts/lexend.
- Material Symbols (self-hosted) — Licensed under the Apache License, Version 2.0. Copyright © Google LLC. Source: github.com/google/material-design-icons.
- Noto Sans KR (loaded from Google Fonts; applied to body text for the Korean locale) — Licensed under the SIL Open Font License, Version 1.1. Copyright © The Noto Project Authors / Google LLC. Source: github.com/notofonts/noto-cjk.
- Noto Sans TC (loaded from Google Fonts; applied to body text for the Traditional Chinese locale) — Licensed under the SIL Open Font License, Version 1.1. Copyright © The Noto Project Authors / Google LLC. Source: github.com/notofonts/noto-cjk.
Build & Development Tooling (Back-end / Build)
The packages below are used to compile and bundle the site (for example, generating CSS and minifying JavaScript). They run only during development and deployment and are not delivered to website visitors. They are listed here for transparency.
Direct dependencies
| Package | Version | License |
|---|---|---|
| @tailwindcss/cli | 4.3.3 | MIT |
| @tailwindcss/container-queries | 0.1.1 | MIT |
| @tailwindcss/forms | 0.5.11 | MIT |
| autoprefixer | 10.5.4 | MIT |
| concurrently | 10.0.3 | MIT |
| onchange | 7.1.0 | MIT |
| postcss | 8.5.22 | MIT |
| tailwindcss | 4.3.3 | MIT |
| terser | 5.49.0 | BSD-2-Clause |
| wrangler | 4.114.0 | MIT OR Apache-2.0 |
Notable licenses among transitive build dependencies
Most transitive build dependencies are permissively licensed (MIT and similar). A few carry weak-copyleft or attribution-required licenses and are noted explicitly. None are distributed to website visitors:
- lightningcss and its platform binaries (MPL-2.0) — the CSS transformer used by Tailwind CSS.
- sharp / libvips binaries @img/sharp-libvips-* (LGPL-3.0-or-later, some Apache-2.0 AND LGPL-3.0-or-later) — image-optimization tooling.
- caniuse-lite (CC-BY-4.0) — browser-compatibility data used by Autoprefixer / Browserslist.
License summary (all build dependencies)
| License | Packages |
|---|---|
| MIT | 144 |
| Apache-2.0 | 25 |
| ISC | 12 |
| MPL-2.0 | 12 |
| LGPL-3.0-or-later | 10 |
| MIT OR Apache-2.0 | 3 |
| Apache-2.0 AND LGPL-3.0-or-later | 3 |
| BSD-3-Clause | 2 |
| Apache-2.0 AND LGPL-3.0-or-later AND MIT | 1 |
| CC0-1.0 | 1 |
| CC-BY-4.0 | 1 |
| BSD-2-Clause | 1 |
| 0BSD | 1 |
Full build dependency list
216 packages, generated from package-lock.json.
Third-Party Hosted Services
This website also embeds or calls the following hosted services. These are operated by third parties under their own terms of service and privacy policies (they are not bundled open-source software):
- Google Analytics (gtag.js), Google reCAPTCHA, Google Maps, Google Calendar, and Google Fonts — governed by Google's Privacy Policy.
- flagcdn.com — country flag images.
See our Cookie Policy for details on how these services are used and consented to.
Proprietary Assets
The "Eye Level" brand fonts used on this website are proprietary and are not open-source. They are not covered by the attributions on this page.