Roundcube - Web-based IMAP email client
Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
HEY - Email at its best, new from Basecamp.
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.
LuckyCrush - Live random video chat