# Third-Party Licenses & Attributions emu is a proprietary product of CloudKites Pty Ltd (see `LICENSE`). It bundles or downloads the third-party AI models and software components listed below, each used under its own license. The notices in this file are provided to comply with those licenses and are part of the emu End-User License Agreement. emu does **not** modify the third-party model weights' architectures; the models are run for inference and, where noted, quantized for on-device efficiency. Where a license requires that modifications be indicated (e.g. CC-BY-4.0), quantization and format conversion to emu's bundle format are the only changes made. --- ## AI models | Model | Role in emu | Provider | License | |---|---|---|---| | **Gemma 4 12B** (instruction-tuned) | Chat (text) — emu 2.0 | Google DeepMind | Gemma Terms of Use | | **Gemma 4 E4B** (instruction-tuned) | Chat + multimodal (text · image · audio) — emu 2.0 | Google DeepMind | Gemma Terms of Use | | **Qwen 3.5 4B** (4-bit) | Chat (text) — emu 3.x for Windows and Linux (`qwen3.5-4b-q4km.nbq`) and emu 2.0 | Alibaba Cloud (Qwen) | Apache License 2.0 | | **Qwen 3.5 9B** (4-bit) | Chat (text) — emu 3.x for Windows and Linux, default (`qwen3.5-9b-q4km.nbq`) and emu 2.0 | Alibaba Cloud (Qwen) | Apache License 2.0 | | **Qwen3-ASR 0.6B** | Speech-to-text | Alibaba Cloud (Qwen) | Apache License 2.0 | | **Qwen3-TTS 12Hz 0.6B** | Text-to-speech (multilingual) | Alibaba Cloud (Qwen) | Apache License 2.0 | | **gwen-tts 0.6B** (Vietnamese voice cloning; fine-tune of Qwen3-TTS) | Text-to-speech | G-Group AI Lab | MIT License | | **Pocket TTS** | Text-to-speech (fast English) | Kyutai | CC-BY-4.0 | | **VieNeu-TTS v3-Turbo** (built on MOSS-TTS-Nano + MOSS-Audio-Tokenizer) | Text-to-speech (Vietnamese · English) | pnnbao-ump; OpenMOSS Team | Apache License 2.0 | | **PP-OCRv6** (detection + recognition) | Document OCR | PaddlePaddle (PaddleOCR) | Apache License 2.0 | | **Qwen3.8 27B** (4-bit, Unsloth Dynamic quantization) | Chat (text) — emu 3.x for Mac | Alibaba Cloud (Qwen); quantization by Unsloth AI | Apache License 2.0 | | **Qwen3.8-27B-DFlash2** draft model | Lossless speculative decoding — emu 3.x for Mac | z-lab / Inco AI | Apache License 2.0 | | **Qwen3-VL 2B / 8B** | Image understanding — emu 3.x (2B on all platforms; 8B on the Mac) | Alibaba Cloud (Qwen) | Apache License 2.0 | | **Unlimited-OCR** (DeepSeek-OCR lineage) | Document OCR, layout-aware — emu 3.x | its authors | MIT License | ### Attribution notes - **Gemma models** are provided by Google under and subject to the **Gemma Terms of Use** (ai.google.dev/gemma/terms) and the **Gemma Prohibited Use Policy**. "Gemma is provided under and subject to the Gemma Terms of Use." Your use of the Gemma models in emu is subject to those terms and that policy. - **Qwen** models (Qwen 3.5, Qwen3-ASR, Qwen3-TTS, Qwen3-VL) © Alibaba Cloud, licensed under the Apache License 2.0. In emu 3.x the Qwen 3.5 9B and 4B weights (4-bit) are repacked, unmodified apart from quantization, into one `.nbq` file each together with the Qwen tokenizer. - **gwen-tts** © G-Group AI Lab, MIT License; it is a fine-tune of Qwen3-TTS (Apache-2.0). - **Pocket TTS** © Kyutai, licensed under CC-BY-4.0 — attribution to Kyutai is given here; weights are quantized/format-converted for on-device use. - **VieNeu-TTS v3-Turbo** © pnnbao-ump, Apache-2.0; based on **MOSS-TTS-Nano** and **MOSS-Audio-Tokenizer** © the OpenMOSS Team (Apache-2.0). - **PP-OCRv6** © PaddlePaddle authors, Apache License 2.0. - **Qwen3.8 27B** © Alibaba Cloud, Apache License 2.0; the 4-bit GGUF quantization (UD-Q4_K_M) by Unsloth AI (Apache-2.0). The **DFlash2** draft model for it © z-lab / Inco AI, Apache License 2.0. In emu 3.x both are repacked, unmodified, into one `.nbq` file together with the Qwen tokenizer. Each model is redistributed/downloaded as quantized weights within emu's self-contained bundle format and is used for on-device inference only. --- ## Software components | Component | Use | License | |---|---|---| | **Qt 6** | Desktop UI framework (dynamically linked) — emu 2.0 only | LGPL-3.0 (or commercial Qt license) | | Qt 6 native binding layer (derived from **MIQT**, © mappu and contributors) | UI bindings — emu 2.0 only | MIT License | | **SQLite** | Local chat-history / settings storage — emu 2.0 only | Public Domain | | **FFmpeg** | Microphone / audio device capture — emu 2.0 only | LGPL-2.1+ | | **stb_image** | Image decoding | Public Domain / MIT | | **NVIDIA CUDA Toolkit & cuDNN** (emu 2.0 GPU builds only) | GPU acceleration runtime | NVIDIA Software License Agreement | | **Inter** typeface (© The Inter Project Authors) | User-interface text — emu 3.x (macOS, Windows, Linux); licence shipped as `OFL-Inter.txt` | SIL Open Font License 1.1 | | **JetBrains Mono** typeface (© The JetBrains Mono Project Authors) | Code text — emu 3.x (macOS, Windows, Linux); licence shipped as `OFL-JetBrainsMono.txt` | SIL Open Font License 1.1 | | **Noto Sans Math** typeface (© The Noto Project Authors) | Mathematical formulas and symbols — emu 3.2.1+ (macOS, Windows, Linux); licence shipped as `OFL-NotoSansMath.txt` | SIL Open Font License 1.1 | | **Noto** typefaces (© The Noto Project Authors): Noto Sans, Noto Sans SC / TC / JP / KR (cut down), Noto Emoji, Noto Sans Symbols 1–2, and the Noto faces for Arabic, Hebrew, the Indic scripts, Thai, Lao, Khmer, Myanmar, Tibetan, Georgian, Armenian, Ethiopic and the other scripts | Text in every other writing system, and emoji — emu 3.2.2+ (macOS, Windows, Linux); licence shipped as `OFL-Noto.txt` | SIL Open Font License 1.1 | | **GNU Unifont** (© Roman Czyborra, Paul Hardy and contributors), cut down to the characters no Noto face has | Last-resort glyphs for recent Unicode additions — emu 3.2.2+; licence shipped as `OFL-Unifont.txt` | SIL Open Font License 1.1 (dual-licensed with GPL-2.0+ with the font embedding exception) | | **Jigmo** typefaces (© Kamichi Koichi), Jigmo2 and Jigmo3 | Rare Han ideographs, CJK Extensions B–I — emu 3.2.2+; licence shipped as `LICENSE-Jigmo.txt` | CC0 1.0 (public domain) | | **HarfBuzz** text-shaping engine (© HarfBuzz contributors) | Joining, reordering and positioning for Arabic, Hebrew, Indic and South-East Asian scripts and emoji sequences — emu 3.2.2+; licence shipped as `LICENSE-HarfBuzz.txt` | MIT ("Old MIT") | Qt 6 is used under the LGPL-3.0: it is dynamically linked, and the user may replace the Qt runtime libraries. The NVIDIA CUDA/cuDNN runtimes are redistributed in GPU builds under the NVIDIA Software License Agreement. --- ## Full license texts The complete text of each referenced license — Apache License 2.0, the MIT License, Creative Commons Attribution 4.0 International (CC-BY-4.0), the Gemma Terms of Use and Prohibited Use Policy, LGPL-3.0 / LGPL-2.1, the SIL Open Font License 1.1 (shipped as `OFL-Inter.txt`, `OFL-JetBrainsMono.txt`, `OFL-NotoSansMath.txt`, `OFL-Noto.txt` and `OFL-Unifont.txt` in the Windows and Linux packages and inside the Mac app's Resources), CC0 1.0 (`LICENSE-Jigmo.txt`), HarfBuzz's MIT licence (`LICENSE-HarfBuzz.txt`), and the NVIDIA Software License Agreement — accompanies the corresponding component and is available from its provider. Copies are included with the distribution where required by the applicable license. © 2026 CloudKites Pty Ltd. This attribution file is provided to satisfy the notice requirements of the licenses above and does not grant any rights in emu or Numbat themselves, which remain proprietary (see `LICENSE`).