Licensor: see the End User Licence Agreement.
1.1 THETA Render consists of proprietary components written by the Licensor (the application, the plug-ins, the workflow files and the pre-computed conditioning files THETA_*.safetensors), which are licensed under the End User Licence Agreement, and of third-party software and models, which are licensed under the terms listed here.
1.2 The licence texts are installed in the folder legal\licenses of the installation, and every Python package keeps its own licence files in its "dist-info" folder. Nothing in the End User Licence Agreement restricts the rights that these licences give you.
1.3 THETA Render is shipped with the NVIDIA build of ComfyUI (folder comfyui_nvidia), which runs on NVIDIA graphics cards. An AMD Radeon build is not part of this package. This list covers the components shipped in this package. Licence names are those declared by each project for the version shipped.
2.1 THETA Render installs ComfyUI Portable 0.39.0, with ComfyUI frontend 1.53.10 and the other packages of that portable build, in the "comfyui" folder of the installation.
Licence: GNU General Public License version 3 (GPL-3.0), full text in legal\licenses\GPL-3.0.txt and at https://www.gnu.org/licenses/gpl-3.0.html.
Project: https://github.com/comfyanonymous/ComfyUI
2.2 Changes. The ComfyUI program files are unchanged. Files that are not needed to run the program (documentation, tests, update scripts, example scripts, launcher batch files and version-control data) were removed from the portable package. Nothing of THETA Render is stored in the comfyui folder: the THETA custom nodes, the pre-computed conditioning files and the models are kept in the separate folder theta_components, which ComfyUI loads through its standard extra_model_paths setting. The ComfyUI window and web page are not shown to you.
2.3 Source code. The ComfyUI source code is not changed by THETA Render. The complete corresponding source code of ComfyUI 0.39.0 can be copied at no charge from https://github.com/comfyanonymous/ComfyUI, release tag v0.39.0 (direct download: https://github.com/comfyanonymous/ComfyUI/archive/refs/tags/v0.39.0.zip). The addresses of the source code of the other GPL and LGPL components are in section 4.5. THETA Render offers the programs in the form in which their projects publish them and points to the places where the source code is published, as section 6(d) of GPL-3.0 allows. The Licensor will maintain access to the corresponding source, whether through the original upstream location or another publicly available equivalent location, for as long as we distribute that version and for at least three years after we last distribute it. A copy of the exact source versions we distribute is also kept at https://github.com/ThetaRender/thetarender-source/releases/tag/1.0.0.
2.4 The scripts used to build the ComfyUI portable package are in the folders .ci and .github of the same repository.
2.5 ComfyUI runs as a separate program and exchanges data with the THETA Render application through a local network connection on your own computer.
The ComfyUI custom nodes theta_clip, image_select, image_router, building_landscape_router and conditioning_select, in the folder theta_components\custom_nodes, were written by the Licensor.
Copyright (c) 2026 Athanasios A. Bampanelos.
They are free software licensed under GPL-3.0 (legal\licenses\GPL-3.0.txt), WITHOUT ANY WARRANTY, and are installed as readable Python source files, which are their source code. You may copy, modify and redistribute them under that licence. This does not apply to the THETA Render application, the plug-ins, the workflows and the conditioning files.
4.1 Main packages, with the licence each declares:
- PyTorch 2.14.0, torchvision 0.29.0, torchaudio 2.11.0 (BSD-3-Clause, with Apache-2.0, Apache-2.0 with LLVM exception, MIT, BSD-2-Clause and Boost licences for parts) - https://pytorch.org
- transformers, tokenizers, huggingface_hub, safetensors (Apache-2.0)
- numpy 2.5.3 (BSD-3-Clause, with 0BSD, MIT, Zlib and CC0-1.0 for bundled parts); scipy, sympy, networkx, jinja2 (BSD-style)
- spandrel, einops, pydantic, sqlalchemy, PyYAML (MIT)
- aiohttp (Apache-2.0 and MIT); kornia, comfy-kitchen (Apache-2.0)
- comfyui-workflow-templates and its sub-packages (core, json, media-api, media-assets-01, media-assets-02) (MIT); comfy-angle (BSD-3-Clause)
- ComfyUI frontend package, comfyui-embedded-docs and comfy-aimdo (GPL-3.0, parts of the ComfyUI project; their source is covered by 2.3; the licence file of comfy-aimdo is legal\licenses\GPL-3.0-comfy-aimdo.txt)
- pygit2 (GPL-2.0 with linking exception; includes libgit2) - https://github.com/libgit2/pygit2, licence text in legal\licenses\GPL-2.0-with-linking- exception-pygit2.txt
- PyAV 19.0.0 (BSD-3-Clause, legal\licenses\PyAV-BSD-3-Clause.txt), which includes FFmpeg libraries - see 4.2
4.2 FFmpeg libraries in PyAV. PyAV includes shared FFmpeg libraries (libavcodec, libavdevice, libavformat, libavutil, libavfilter, libswscale, libswresample) licensed under LGPL-2.1-or-later or GPL-2.0-or-later, and the codec libraries libx264 and libx265 (GPL-2.0-or-later) and others (libvpx, libopus, libdav1d, libwebp with libwebpmux and libsharpyuv, libSvtAv1Enc, libvmaf, libvpl), together with runtime libraries such as libiconv (LGPL), zlib, libgcc, libstdc++ and libwinpthread. They are shipped unmodified as separate DLL files in the folder av.libs, so you can replace them. THETA Render does not use video functions. Source code: https://ffmpeg.org, https://www.videolan.org/developers/x264.html, https://www.x265.org and https://github.com/PyAV-Org/PyAV, and in section 4.5. Licence texts: legal\licenses\LGPL-2.1.txt, legal\licenses\GPL-2.0.txt, legal\licenses\FFmpeg-LICENSE- overview.txt, legal\licenses\x264-COPYING-GPL-2.0.txt and legal\licenses\x265-COPYING- GPL-2.0.txt.
The runtime libraries are libiconv-2 (GNU libiconv, LGPL-2.1, text in legal\licenses\LGPL-2.1.txt), libgcc_s_seh-1 and libstdc++-6 (the GCC 16.1.0 runtime libraries, GPL-3.0 with the GCC Runtime Library Exception 3.1, texts in legal\licenses\GPL-3.0.txt and legal\licenses\GCC-Runtime-Library-Exception-3.1.txt), libwinpthread-1 (mingw-w64 winpthreads, permissive licence, text in legal\licenses\mingw-w64-winpthreads-COPYING.txt) and zlib 1.3.2 (zlib licence, text in legal\licenses\zlib-license.txt). They are built with the MSYS2 / mingw-w64 tools and are shipped as they are in the PyAV wheel; the source code of the GCC and libiconv libraries is published at the addresses in section 4.5.
4.3 The other packages (for example aiohappyeyeballs, attrs, certifi, charset-normalizer, click, filelock, fsspec, httpx, idna, requests, rich, tqdm, urllib3, yarl) are under MIT, MIT-0, BSD, Apache-2.0, MPL-2.0, ISC, PSF-2.0, CNRI-Python, CC0-1.0 or similar licences stated in their dist-info folders. The complete list of the Python packages, with version, declared licence and project address, is in the file legal\THIRD_PARTY_PACKAGES.txt (86 packages in the NVIDIA build).
4.5 Where to get the source code of the GPL and LGPL components. The versions are those in section 4.1 and in the file THIRD_PARTY_PACKAGES.txt. If a project has moved its files, the same version is available from the package index https://pypi.org (source distribution of the package) or from the project's own download page.
- ComfyUI frontend 1.53.10: https://github.com/Comfy-Org/ComfyUI_frontend
- comfyui-embedded-docs 0.5.13: https://github.com/Comfy-Org/embedded-docs
- comfy-aimdo 0.5.5: https://github.com/Comfy-Org/comfy-aimdo
- pygit2 1.20.1: https://github.com/libgit2/pygit2 and libgit2: https://github.com/libgit2/libgit2
- PyAV 19.0.0: https://github.com/PyAV-Org/PyAV
- FFmpeg 9.0.2 (the version built into PyAV 19.0.0, libavcodec 63): https://ffmpeg.org/download.html
- x264: https://code.videolan.org/videolan/x264
- x265: https://bitbucket.org/multicoreware/x265_git
- libiconv (the exact version is not stated in the PyAV wheel): https://www.gnu.org/software/libiconv/
- GCC runtime libraries libgcc and libstdc++, version 16.1.0: https://gcc.gnu.org and https://ftp.gnu.org/gnu/gcc/gcc-16.1.0/
- mingw-w64 (winpthreads): https://www.mingw-w64.org
- zlib 1.3.2: https://zlib.net
4.4 Embedded Python (version 3.13) is licensed under the Python Software Foundation License - https://www.python.org. Its licence text, which also contains the licences of the other works bundled in the Python Windows build, is in legal\licenses\Python-3.13-PSF- and-bundled-libraries.txt. The Python Windows build also contains OpenSSL 3 (libcrypto-3.dll and libssl-3.dll; Apache-2.0, text in legal\licenses\Apache-2.0.txt), SQLite (sqlite3.dll; in the public domain), expat, libffi, bzip2, zlib and xz, under their own permissive licences. The Microsoft Visual C++ runtime DLLs shipped with Python are redistributed under the Microsoft Distributable Code terms quoted in that file.
5.1 In the NVIDIA build, PyTorch includes NVIDIA CUDA runtime libraries (CUDA runtime, cuBLAS, cuFFT, cuRAND, cuSOLVER, cuSPARSE, NVRTC, nvJitLink and CUPTI), distributed under the NVIDIA CUDA Toolkit End User Licence Agreement, Attachment A - https://docs.nvidia.com/cuda/eula/
5.2 In the NVIDIA build, PyTorch also includes the NVIDIA cuDNN 9 libraries, distributed under the NVIDIA cuDNN Software License Agreement - https://docs.nvidia.com/deeplearning/cudnn/latest/reference/eula.html
5.3 These NVIDIA libraries are included only to run the programs listed above, are not distributed as a standalone product, and are not licensed to you under the GPL or under the End User Licence Agreement. Copies of the NVIDIA terms are in legal\licenses\NVIDIA\.
The notices for the code that PyTorch itself bundles are in the files LICENSE and NOTICE in the dist-info folder of torch.
6.1 FLUX.2 [klein] 4B (FP8 version) by Black Forest Labs, file theta_components\models\diffusion_models\flux-2-klein-4b.safetensors. Licence: Apache-2.0. https://huggingface.co/black-forest-labs/FLUX.2-klein-4b-fp8
6.2 FLUX.2 VAE by Black Forest Labs, file flux2-vae.safetensors. Licence: Apache-2.0. https://huggingface.co/black-forest-labs/FLUX.2-VAE
6.3 CLIP ViT-B/32 by OpenAI (files in theta_components\custom_nodes\theta_clip\clip-vit- base-patch32), used to tell interiors from exteriors. Licence: MIT. Copyright (c) 2021 OpenAI. https://github.com/openai/CLIP and https://huggingface.co/openai/clip-vit-base- patch32
6.4 Real-ESRGAN x2plus and x4plus upscaling models by Xintao Wang et al. Licence: BSD-3-Clause. Copyright (c) 2021, Xintao Wang. https://github.com/xinntao/Real-ESRGAN
6.5 TAESD and TAEF1 preview models (folder vae_approx) by Ollin Boer Bohan. Licence: MIT. https://github.com/madebyollin/taesd
6.6 Qwen3-4B by the Qwen team (Alibaba Cloud), Apache-2.0, https://huggingface.co/Qwen/Qwen3-4B. The Licensor used this model on its own computers to prepare the pre-computed conditioning files THETA_*.safetensors. The model weights are not part of THETA Render.
6.7 The Apache-2.0 models are used without modification of their weights. Modified FLUX.2 weights are not distributed. The text of Apache-2.0 is in legal\licenses\Apache-2.0.txt.
6.8 Black Forest Labs, OpenAI, Alibaba and the other model authors do not endorse THETA Render. Their names and marks are used only to identify the models.
The application is a Python program packaged with PyInstaller. It contains:
- Python 3.13 (Python Software Foundation License), Copyright (c) 2001-2024 Python Software Foundation; All Rights Reserved
- Tcl/Tk (BSD-style Tcl/Tk licence), Copyright (c) Regents of the University of California, Sun Microsystems Inc., Scriptics Corporation, ActiveState Corporation, Apple Inc. (Tk) and other parties, text in legal\licenses\Tcl-Tk-license.txt - https://www.tcl.tk
- Pillow (MIT-CMU / HPND licence), Copyright (c) 1997-2011 Secret Labs AB, (c) 1995-2011 Fredrik Lundh and contributors, (c) 2010 Jeffrey 'Alex' Clark and contributors - https://python-pillow.org, licence text and notices of its bundled libraries in legal\licenses\Pillow-HPND-and-bundled-libraries.txt
- websocket-client (Apache-2.0, text in legal\licenses\websocket-client-Apache-2.0.txt), Copyright 2026 engn33r and contributors - https://github.com/websocket-client/websocket- client
- the PyInstaller bootloader (GPL-2.0-or-later with the PyInstaller bootloader exception, which allows it to be used in programs under any licence, text in legal\licenses\PyInstaller-GPL-2.0-with-bootloader-exception.txt) - https://pyinstaller.org The SketchUp extension uses the public SketchUp Ruby API. SketchUp is a trademark of Trimble Inc.; THETA Render is not affiliated with or endorsed by Trimble.
The Rhino plug-in is a set of Python scripts that use the public RhinoCommon API. Rhino and Rhinoceros are trademarks of Robert McNeel & Associates; THETA Render is not affiliated with or endorsed by McNeel.
legal\licenses\GPL-3.0.txt; legal\licenses\GPL-3.0-comfy-aimdo.txt; legal\licenses\Apache-2.0.txt; legal\licenses\MIT-CLIP.txt; legal\licenses\BSD-3-Clause- Real-ESRGAN.txt; legal\licenses\Python-3.13-PSF-and-bundled-libraries.txt; legal\licenses\OpenBLAS-BSD-3-Clause.txt; legal\licenses\Pillow-HPND-and-bundled- libraries.txt; legal\licenses\GPL-2.0-with-linking-exception-pygit2.txt; legal\licenses\PyAV-BSD-3-Clause.txt; legal\licenses\LGPL-2.1.txt; legal\licenses\GPL-2.0.txt; legal\licenses\FFmpeg-LICENSE-overview.txt; legal\licenses\x264-COPYING-GPL-2.0.txt; legal\licenses\x265-COPYING-GPL-2.0.txt; legal\licenses\Tcl-Tk-license.txt; legal\licenses\websocket-client-Apache-2.0.txt; legal\licenses\PyInstaller-GPL-2.0-with-bootloader-exception.txt; legal\licenses\NVIDIA\ (CUDA EULA and cuDNN licence agreement); and the LICENSE file of ComfyUI in comfyui\ComfyUI\LICENSE.
Also installed: legal\licenses\GCC-Runtime-Library-Exception-3.1.txt; legal\licenses\mingw-w64-winpthreads-COPYING.txt; legal\licenses\zlib-license.txt.
The licence texts of the other Python packages are in their dist-info folders (comfyui\python_embeded\Lib\site-packages).
If a provision of the End User Licence Agreement conflicts with a licence listed here for the component concerned, that licence prevails for that component.