RetroPage and all of it's code is licensed under the terms of the MIT Expat License. The full text of said license is listed below:
MIT Expat License
Copyright (c) 2020 Ravenger (ravenger.net)
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.
Additionally, you can find the RetroPage license here.
Unless otherwise stated, all content on the RetroPage blog is licensed under the terms of the Creative Commons Attribution 4.0 International License.
RetroPage uses Element CSS for it's styling, which is licensed under the MIT Expat License. The full text of the license can be found here.
RetroPage uses the Zepto JavaScipt library for additional functionality, which is licensed under the MIT Expat License. The full text of the license can be found here.
The Reset Page uses a CSS loading animation made by Luke Haas, which is licensed under the MIT Expat License. The full text of the license can be found here.
The Reset Page uses "Warning" by Garrett Knoll and "X" by MRFA from the Noun Project and is licensed under the Creative Commons Attribution 3.0 United States License. The full text of the license can be found here.
RetroPage is also fully LibreJS compatable.