Third-Party Licenses & Attributions
Last updated: March 1, 2026
CallBro uses open-source software and third-party services. This page provides attribution and license information.
Part A: Third-Party Services
The following external services process user data as part of CallBro's functionality. Each service is subject to its own terms and privacy policy.
| Service | Purpose | Links |
|---|---|---|
| Soniox | Real-time speech-to-text transcription | soniox.com |
| OpenRouter | LLM API routing (proxies to Gemini, GPT, etc.) | openrouter.ai |
| Google Cloud / Gemini | AI language model (via OpenRouter) | Terms |
| OpenAI | AI language model (via OpenRouter) | Terms |
| Google OAuth | Social sign-in authentication | Privacy |
| Postmark | Transactional email delivery | Privacy |
| PostHog | Product analytics (desktop app) | Privacy |
| Google Analytics | Web analytics (with consent) | Terms |
| GitHub | Auto-update distribution | Terms |
Part B: Open-Source Software — Backend (Python)
| Package | License |
|---|---|
| FastAPI | MIT |
| SQLAlchemy | MIT |
| Alembic | MIT |
| Pydantic / pydantic-settings | MIT |
| asyncpg | Apache 2.0 |
| bcrypt | Apache 2.0 |
| httpx | BSD 3-Clause |
| python-jose | MIT |
| python-multipart | Apache 2.0 |
| uvicorn | BSD 3-Clause |
| structlog | MIT / Apache 2.0 |
| websockets | BSD 3-Clause |
| greenlet | MIT |
| Unidecode | GPL 2.0+ |
| openai (Python SDK) | Apache 2.0 |
Part C: Open-Source Software — Frontend (Next.js)
| Package | License |
|---|---|
| Next.js | MIT |
| React / React DOM | MIT |
| Radix UI (dialog, switch, slot, tabs) | MIT |
| TipTap (core, starter-kit, extensions, static-renderer) | MIT |
| class-variance-authority | Apache 2.0 |
| clsx | MIT |
| date-fns | MIT |
| lucide-react | ISC |
| motion (Framer Motion) | MIT |
| next-intl | MIT |
| next-themes | MIT |
| recharts | MIT |
| tailwind-merge | MIT |
| Tailwind CSS | MIT |
Part D: Open-Source Software — Desktop App (Tauri)
JavaScript / TypeScript dependencies
| Package | License |
|---|---|
| @ai-sdk/openai, @ai-sdk/react, ai | Apache 2.0 / MIT |
| @tauri-apps/api and plugins (store, updater, process, etc.) | MIT / Apache 2.0 |
| @tanstack/react-query | MIT |
| @tanstack/react-router | MIT |
| Radix UI (alert-dialog, avatar, checkbox, dialog, dropdown-menu, label, radio-group, scroll-area, separator, slot, switch, tabs, tooltip) | MIT |
| TipTap (core, extensions, react, markdown, starter-kit, static-renderer) | MIT |
| class-variance-authority | Apache 2.0 |
| clsx | MIT |
| crypto-js | MIT |
| framer-motion | MIT |
| lucide-react | ISC |
| posthog-js | MIT |
| React / React DOM | MIT |
| sonner | MIT |
| tailwind-merge | MIT |
| turndown | MIT / Apache 2.0 |
| usehooks-ts | MIT |
| zod | MIT |
| zustand | MIT |
Rust dependencies
| Crate | License |
|---|---|
| tauri (+ plugins: opener, store, keyring, updater, process, notification, deep-link, autostart) | MIT / Apache 2.0 |
| serde / serde_json | MIT / Apache 2.0 |
| tokio | MIT |
| tokio-tungstenite | MIT |
| url | MIT / Apache 2.0 |
| uuid | MIT / Apache 2.0 |
| tracing / tracing-subscriber | MIT |
| bytes | MIT |
| futures-util | MIT / Apache 2.0 |
| thiserror / anyhow | MIT / Apache 2.0 |
| chrono | MIT / Apache 2.0 |
| sysinfo | MIT |
| cpal | Apache 2.0 |
| rubato | MIT |
| ringbuf | MIT / Apache 2.0 |
| objc2 / objc2-foundation / objc2-app-kit (macOS) | MIT |
| wasapi (Windows) | MIT |
| libpulse-binding (Linux) | MIT / Apache 2.0 |
Part E: License Texts
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject
to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.Apache License 2.0
Full text: apache.org/licenses/LICENSE-2.0
BSD 3-Clause License
Full text: opensource.org/licenses/BSD-3-Clause
ISC License
Full text: opensource.org/licenses/ISC
The above lists are derived from direct dependency declarations. Transitive (indirect) dependencies are not individually listed.