# Licences

The repository's packages carry different licences, each package's full text in its
`LICENSE` file:

| Package | Licence | SPDX |
|---|---|---|
| `apps/learn/halkyon_learn_flutter`, Learn's app | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/learn/halkyon_learn_client`, generated from Learn's models | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/learn/halkyon_learn_server` | Server Side Public License, version 1 | `SSPL-1.0` |
| `apps/learn/halkyon_learn_curator`, turning dictionary downloads into dictionary files | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyon_base_server`, the Serverpod module every Halkyon server includes | Server Side Public License, version 1 | `SSPL-1.0` |
| `packages/halkyon_base_client`, generated from the module's models, with SRP's client half | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyon_app`, `packages/halkyon_ui` | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyon_keys`, an account's keys on the device | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyon_core`, `packages/halkyon_interop`; BIP-39's English word list in halkyon_core under the MIT License (`BIP39-LICENSE`) | GNU Affero General Public License, version 3 or any later version, as halkyon_shared, where they began, licensed them | `AGPL-3.0-or-later` |
| `apps/todo/halkyon_todo_flutter`, Todo's app | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/todo/halkyon_todo_client`, generated from Todo's models | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/todo/halkyon_todo_server` | Server Side Public License, version 1 (decided 2026-10-19, as Learn's) | `SSPL-1.0` |
| `apps/train/halkyon_train_flutter`, Train's app | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/train/halkyon_train_client`, generated from Train's models | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/train/halkyon_train_server` | Server Side Public License, version 1 (as Learn's and Todo's) | `SSPL-1.0` |

The servers and the module build on Serverpod's core, which is under the SSPL, and so are
under it too. The apps and the shared Flutter packages link only permissively licensed
packages (Todo's and Train's icons are Lucide's, under the ISC licence, whose notice each app registers), and the client packages are generated from our own model definitions, so all of
them are under the AGPL. The curator depends on neither a server nor Serverpod: Learn's
server reads the files it writes, never its code.

Everything else in this repository (tooling, documentation, deployment files) is under
`AGPL-3.0-or-later` unless a file says otherwise.