Open Source and Creative Commons
- EB Garamond SIL Open Font License
- Young Serif SIL Open Font License
- Reforma (registration required to download) License: Creative Commons BY-ND 4.0
Freely Usable
- The AdobeFonts are freely usable for many purposes. Check the licensing.
- Adobe Garamond Pro
- Adobe Caslon Pro is one of my favourites
- Butler