- CliqueFriends - Free penpal site with chat that promotes friendship
- Disney Pen Pal Exchange - A free pen pal list for anyone age 16 and above who would like to have email friendships with other people who share their interests and love of everything Disney.
- Handicapped Friends Pen Pal Club - A confidential, nonprofit pen pal service geared for the disabled and anyone else interested. Quarterly newsletter published. Membership fee charged.
- Harry Potter Penpals - Harry Potter and Joanne K. Rowling Fans can find other Harry Potter e-mail or snail-mail penfriends.
- Ladies Only Pen Pals - A penpal site for women over the age of 18.
- Language Penpals - Will enable you to learn languages and make friends at the same time. Find people who share your interest in a language
- Long Letter Ladies - A penpal site specifically designed for women searching for long letter penpals.
- SAPE - Since 1989, SAPE (formerly 'The Soviet-American Penfriend Exchange') has matched more than 30,000 people from all over the world with penpals in the former USSR and Baltic countries.
- Student Letter Exchange - Matching English speaking pen pals with students, ages 9-18, across the US and around the world.
- Victorian Friends - A site for people who love the Victorian era. Sign or view the guestbook to find penpals, or take a look at facts about the time period.
- World Pen Pals - Students writing to other students. Educational pen friends.
