monline

Wikipedia has a comparison of webmail providers, although it is very short and lists only the biggest players. However in my country (Hungary) the three most popular are: Freemail, Citromail and Vipmail.

Some of the less popular Hungarian ones:

1. Mailbox
2. Freestart
3. Index (this one is using Vipmail too!)
4. TVN
5. C2