Licenses
Last updated: July 25, 2026
Mostrel is built on other people’s work. This page credits it and keeps the license texts where you can actually read them, which is both the polite thing and the required thing.
Typefaces
These are served from our own servers rather than a font CDN — see the subprocessor list for why. That makes us a redistributor, so each font’s license travels with it here, in full and unmodified.
Instrument Sans
OFL-1.1Body and interface text.
Copyright 2022 The Instrument Sans Project Authors
Instrument Serif
OFL-1.1Display headlines and the editorial italics.
Copyright 2022 The Instrument Serif Project Authors
JetBrains Mono
OFL-1.1Slugs, timestamps, and metadata.
Copyright 2020 The JetBrains Mono Project Authors
Software
The significant pieces, grouped by license. This is a readable summary rather than a machine-generated inventory — the full dependency tree, pinned to exact versions, lives in the lockfile in our repository.
MIT
- React — The UI runtime
- TanStack Router & Start — Routing and the server-function layer the whole app is built on
- Tailwind CSS — Every style in the design system
- Better Auth — Sign-in, sessions, and the GitHub OAuth flow
- Zod — Schema validation — the contract every block config is checked against
- unified, remark & rehype — Markdown parsing and the HTML sanitizer that makes published text safe
- node-postgres — The PostgreSQL driver
- Lexical — The rich-text editor behind prose blocks
- Polar SDK — Checkout, the billing portal, and reading subscription state
- Standard Webhooks — Verifying the signature on every billing webhook we receive
- Vite, Wrangler & Vitest — Building, deploying, and testing
Apache-2.0
- Drizzle ORM — Database schema and queries
- React Aria Components — Accessible menus, dialogs, and the drag-and-drop block list
MPL-2.0
Used unmodified. Their source is public at the links below; if we ever change these files, our changes have to be published too.
ISC
- Lucide — The interface icons
CC0-1.0
The icon artwork is dedicated to the public domain, but the brand marks it depicts are not — they remain the property of their owners. We use them nominatively: to name the actual service a button connects to, never to imply the company endorses Mostrel.
- Simple Icons — The GitHub mark on the sign-in and account screens
Things we may add
One is on the roadmap and will be credited here in the same release that ships it: a provider for the optional AI import suggestions. If that choice drags in a license with real obligations, it gets its own entry rather than a line in a list.
Something missing?
If your work is in here and credited wrongly — or not credited at all — tell us at legal@mostrel.com and we’ll fix it quickly. We would much rather over-attribute than under-attribute.