Open-Source Licenses
Attribution for the open-source software and fonts bundled with the FlaskConnect app. This is the same content as Help → Open-Source Licenses inside the app.
FlaskConnect uses the open source software and fonts listed below.
We thank their respective copyright holders.
| Component | Version | License | Copyright holder |
|---|---|---|---|
| Python (CPython) | 3.13 | PSF License 2.0 | Python Software Foundation |
| Kivy | 2.x | MIT | Kivy Team and other contributors |
| SDL2 (via Kivy) | 2.x | zlib | Sam Lantinga and contributors |
| RDKit | 2024.x | BSD-3-Clause | Greg Landrum and the RDKit contributors |
| NumPy | 2.x | BSD-3-Clause | NumPy Developers |
| Pillow | 10+ | MIT-CMU (HPND) | Jeffrey A. Clark and contributors / Secret Labs AB / Fredrik Lundh |
| lxml (includes libxml2/libxslt) | 5.x | BSD-3-Clause / MIT | lxml project / Daniel Veillard |
| python-pptx | 0.6+ | MIT | Steve Canny |
| python-docx | 1.x | MIT | Steve Canny |
| openpyxl | 3.x | MIT | openpyxl contributors |
| Requests | 2.x | Apache-2.0 | Kenneth Reitz / Python Software Foundation |
| certifi | - | MPL-2.0 | Kenneth Reitz / certifi contributors |
| python-dotenv | 1.x | BSD-3-Clause | Saurabh Kumar |
| resvg-py | 0.3.x | MIT | baseplate-admin |
| resvg / usvg | 0.47 | Apache-2.0 OR MIT | Yevhenii Reizner |
| tiny-skia | 0.12 | BSD-3-Clause | Yevhenii Reizner / Google Inc. (Skia) |
| fontdb, rustybuzz and other Rust crates | - | MIT / Apache-2.0 and other permissive licenses | Respective copyright holders (see the SBOM bundled with resvg-py) |
| PyObjC (macOS) | 10+ | MIT | Ronald Oussoren and contributors |
| pyobjus (iPadOS) | - | MIT | Kivy Team and other contributors |
| Noto Sans JP (bundled font) | - | SIL Open Font License 1.1 | Google LLC (Noto is a trademark of Google) |
| Roboto (font bundled with Kivy) | - | Apache-2.0 | Google LLC |
| GNU FreeFont FreeSans (data bundled with RDKit) | - | GPLv3 (with font embedding exception) | Free Software Foundation |
License texts
The texts below apply to the corresponding components listed above, together with their respective copyright notices.
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.
BSD 3-Clause License Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
zlib License This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution.
Apache License 2.0
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use the covered components except in compliance with the License. You may
obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations
under the License.
Mozilla Public License 2.0 (certifi)
certifi is provided under the MPL-2.0. This app bundles certifi
without modification. The license text and the source code are
available at:
https://mozilla.org/MPL/2.0/
https://github.com/certifi/python-certifi
Python Software Foundation License 2.0 (CPython)
Copyright (c) 2001-2026 Python Software Foundation. All rights reserved.
This app bundles the Python runtime. License text:
https://docs.python.org/3/license.html
SIL Open Font License 1.1 (Noto Sans JP) Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name 'Source'. / Noto is a trademark of Google LLC. This Font Software is licensed under the SIL Open Font License, Version 1.1. The license is available with a FAQ at: https://openfontlicense.org The font itself is not sold on its own; it is redistributed as part of the app (embedded use) under the terms of OFL 1.1.
GNU FreeFont (FreeSans, data bundled with RDKit)
GNU FreeFont is provided under the GPLv3 with a font embedding
exception. It is included here as data bundled with RDKit; thanks to
the embedding exception, the license does not extend to documents or
images that use the font. Text and source:
https://www.gnu.org/software/freefont/