Prevon

Third-Party Licenses

This page lists the third-party libraries used to build Prevon.

Cryptography

  • libsodium (via sodium 4.0.1, sodium_libs 4.0.0) — ISC License
  • PointyCastle 3.9.1 — MIT License
  • SQLCipher (via sqlcipher_flutter_libs 0.6.8) — BSD-style License, Copyright © 2008–2020 Zetetic LLC; bundles the Flutter wrapper (MIT, © 2020 Simon Binder) and OpenSSL (Apache License 2.0)
  • crypto (Dart) 3.0.7 — BSD-3-Clause
  • bip39 1.0.6 — MIT License

Storage & Data

  • drift 2.29.0 — MIT License
  • sqlite3 2.9.4 — MIT License
  • sqlite_vec 0.1.7-alpha.3 — MIT License, Copyright © 2024 Alex Garcia
  • shared_preferences 2.5.5 — BSD-3-Clause
  • flutter_secure_storage 10.0.0 — MIT License

AI & Embedding

  • flutter_gemma 1.5.9 — Apache License 2.0
  • flutter_gemma_litertlm 1.4.2 — Apache License 2.0
  • flutter_onnxruntime 1.8.3 — MIT License
  • dart_sentencepiece_tokenizer 1.3.2 — Apache License 2.0

Editor

  • AppFlowy Editor (vendored fork) — Mozilla Public License 2.0. Source available at github.com/Prevon-Privacy/prevon-quilltext-engine
  • prevon_quilltext_engine (vendored fork) — Mozilla Public License 2.0. Source available at github.com/Prevon-Privacy/prevon-quilltext-engine

Platform & UI

  • Flutter SDK 3.44.7 — BSD-3-Clause
  • provider 6.1.5+1 — MIT License
  • get_it 9.2.1 — MIT License
  • biometric_signature 12.0.1 — MIT License, Copyright © 2026 Chamoda Nethra
  • window_manager 0.4.3 — MIT License
  • url_launcher 6.1.11 — BSD-3-Clause
  • qr_flutter 4.1.0 — MIT License
  • mobile_scanner 7.4.0 — MIT License
  • network_info_plus 8.1.0 — BSD-3-Clause
  • file_picker 12.0.0 — MIT License
  • flutter_slidable 4.0.3 — MIT License

Fonts

  • Lora — SIL Open Font License 1.1. Copyright © 2011 The Lora Project Authors. Used for note titles in the app.
  • Source Sans 3 — SIL Open Font License 1.1. Copyright © 2010–2024 Adobe (https://github.com/adobe-fonts/source-sans). Used for interface text in the app.
  • Switzer — ITF Free Font License, Indian Type Foundry (via Fontshare). Used for text on this website.

Utilities

  • path_provider 2.1.5 — BSD-3-Clause
  • path 1.9.1 — MIT License
  • intl 0.20.2 — BSD-3-Clause
  • archive 4.0.9 — MIT License
  • xml 6.6.1 — MIT License
  • yaml 3.1.3 — MIT License
  • uuid 4.5.3 — MIT License
  • convert 3.1.1 — MIT License
  • ffi 2.2.0 — MIT License
  • http 1.6.0 — BSD-3-Clause
  • synchronized 3.1.0 — MIT License
  • hlc 1.0.4 — MIT License

Full license text for each package is available from its respective source repository or pub.dev listing.

This list covers direct dependencies. Questions about our third-party library usage? Contact [email protected].