1001 Fonts (Different fonts supplied by users. Generally free to use but individual fonts may vary.) Fonts can be used for personal use, in compliance with the General Terms of Use. If no information is given, commercial use is not allowed without prior written permission from the respective author.
Creative Fabrica (Free fonts for commercial use)
Dafont.com (Different fonts supplied by users. Generally free to use but individual fonts may vary.) Dafont licence terms state:
The fonts presented on this website are their authors' property, and are either freeware, shareware, demo versions or public domain. The licence mentioned above the download button is just an indication. Please look at the readme-files in the archives or check the indicated author's website for details, and contact him/her if in doubt.
If no author/licence is indicated that's because we don't have information, that doesn't mean it's free.
Fontesk (Free for commercial use)
Sedgwick Avenue (created by Pedro Vergani and Kevin Burke. These fonts are licensed under the Open Font License. This allows free use in all products, including commercial. But you cannot sell the fonts separately.
The League of Moveable Type (Different fonts supplied by users. Generally free to use but individual fonts may vary.)