| `apps/halkyon/halkyone_halkyon_flutter`, Learn's app | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/halkyon/halkyone_halkyon_client`, generated from Learn's models | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/halkyon/halkyone_halkyon_server` | Server Side Public License, version 1 | `SSPL-1.0` |
| `apps/halkyon/halkyone_halkyon_curator`, turning dictionary downloads into dictionary files | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyone_base_server`, the Serverpod module every Halkyon server includes | Server Side Public License, version 1 | `SSPL-1.0` |
| `packages/halkyone_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/halkyone_app`, `packages/halkyone_editor`, `packages/halkyone_ui` | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `packages/halkyone_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/halkyone_core`, `packages/halkyone_interop`; BIP-39's English word list in halkyone_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/myrmex/halkyone_myrmex_flutter`, Todo's app | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/myrmex/halkyone_myrmex_client`, generated from Todo's models | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later` |
| `apps/myrmex/halkyone_myrmex_server` | Server Side Public License, version 1 (decided 2026-10-19, as Learn's) | `SSPL-1.0` |
| `apps/train/halkyone_train_flutter`, Train's app, with an added permission for linking Polar's BLE SDK (`LICENSE-polar-exception.md`) | GNU Affero General Public License, version 3 or any later version | `AGPL-3.0-or-later WITH LicenseRef-Polar-BLE-SDK-exception` |
| `apps/train/halkyone_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/halkyone_train_server` | Server Side Public License, version 1 (as Learn's and Todo's) | `SSPL-1.0` |
packages (the apps' 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