Terms
Spider Solitaire is free software. You may use, copy, change and share it under the MIT licence.
No warranty
The software is provided as is, without warranty of any kind. The full wording is in the licence.
Card art and fonts
The Classic card faces come from Dmitry Fomin's English pattern deck (CC0 1.0) and Byron Knoll's ace of spades (public domain), as listed in CREDITS.md. The website fonts are under the SIL Open Font License 1.1.
Trademarks
Windows and Windows XP are trademarks of Microsoft. This project is a tribute and is not affiliated with or endorsed by Microsoft or Apple.