Legal & provenance.
Balloon is an independent design-system project created and maintained by Matthew Linn. This page explains who owns the work, where outside materials appear, and how AI-assisted contributions are handled.
Copyright
© 2026 Matthew Linn. Original human-authored text, documentation, code, visual arrangements, and brand assets are protected to the extent permitted by applicable law. All rights reserved.
This notice does not claim ownership of third-party trademarks, licensed typefaces, or material that is not eligible for copyright protection.
AI-assisted work
Balloon was developed with AI-assisted tools. Some illustrations, copy, and implementation contain AI-generated material. Matthew Linn directed the work, selected and arranged results, and revised the system through review.
Copyright protection may not extend to material generated solely by AI. AI-assisted work is reviewed before it becomes part of Balloon.
Fonts and licenses
Balloon uses IBM Plex, Inter, Manrope, Nunito Sans, Playfair Display, and Source Sans 3 through Google Fonts. The font software and family names remain subject to their authors’ open-source licenses.
The reflected lowercase b in the Balloon mark was derived from Playfair Display and converted to outlined vector geometry under the SIL Open Font License.
About Google Fonts licensingInfluence without affiliation
Balloon studies public design-system materials to understand interaction, accessibility, motion, content, and governance. Company and product names appear only to identify the references reviewed. Their trademarks and content belong to their respective owners.
Balloon is not affiliated with, sponsored by, or endorsed by Airbnb, Untitled UI, Notion, Carbon, Radix, Atlassian, Linear, Stripe, W3C, or the other organizations referenced in its documentation.