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Open-source licenses

Last updated: October 10, 2026

VietLing is built on third-party models, data, and software. This page lists them with their licenses and the attribution they require. VietLing itself is proprietary software published by MAVOS Company Limited.

On-device models

Translation, Grammar Correction, Dictation, Text-to-Speech, and privacy filtering run on your device with these models. VietLing changed them by converting them to ONNX Runtime format and quantizing them to INT8.

ModelLicenseSource
QuickMT EN to VICC-BY-4.0View
QuickMT VI to ENCC-BY-4.0View
MediaPipe Language DetectorApache-2.0View
CoEdIT BaseApache-2.0View
Kitten TTS NanoApache-2.0View
VieNeu TTS v3 NanoApache-2.0View
Supertonic 3OpenRAIL-MView
Parakeet TDT CTCCC-BY-4.0View
Gipformer 1.5MITView
GLiNER Multi PII v1Apache-2.0View

Dictionary

Dictionary Packages contain data derived from English Wiktionary through Wiktextract. The data is licensed under Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0).

Wiktionary contributors. Reformatted by VietLing.

The Dictionary data stays under CC BY-SA 4.0 when you copy, change, or share it. This license covers the data files only. It does not apply to the VietLing app code.

Release tooling

VietLing release tooling bundles this software. Each project keeps its own license and notice.

ComponentLicenseSource
SQLCipher Community EditionBSD-styleView
ed25519-dalekBSD-3-ClauseView
OpenSSLOpenSSL LicenseView