C
- Cavalcade of Awesome
- Centered Librarian
- Children’s Book-a-Day Almanac
- Chariton (IA) Square Deal
- Color-ize (color lists)
- Commonplace: Journal of Early American Life
- Cool & Collected Toy Collecting
- Creamy and Crunchy: History of Peanut Butter
- Cryptii (encoder/decoder)
- Culturemap: Austin
- Curious Music
- Curry Guy