Mail.Ru Agent (Symbian) - Mail.Ru Agent provides the ability to exchange instant messages between your friends, send free SMS to cell phones, share your photos and manage your Mail.Ru mailbox.
Mail.Ru Agent is used by over 11 million people is Russia and all over the world
Skype (Symbian) - Skype on the go with Skype for Symbian. Make voice calls and chat for free, no matter where you are. Skype for Symbian works over WiFi or 3G data connection. It is recommended to have an unlimited data plan when using 3G connection
SlickSymbian OS, Pocket PC, Series 60, Smartphone, AndroidVersion: 0.72 updated Upload date: 31 Jan 12 Tags: Internet & Communications
Freeware
Slick is messenger application for mobile phones. It allows you to chat with your friends connected though various online messaging applications.
Currently it is still in development, and alpha version is available for free for public testing
fring for Symbian 9.3 - fring gives you FREE video calls, voice calls and live chat to your fring buddies and to other friends on popular social networks: Google Talk, MSN Messenger, Yahoo!, AIM, ICQ, Twitter & SIP! Also, use fringOut to make low cost calls to any landline or mobile worldwide (from 1c a minute)
Nimbuzz ? Free calls and messaging (for S60 2nd Ed.) - Nimbuzz is free calls and messaging for the connected generation. Everything you need to communicate for free. You can import popular networks (Yahoo! Messenger, MSN Messenger, GoogleTalk, Facebook, AIM, MySpace, Hyves) and SIP (VoIP) accounts
netomat Hub - The application features unlimited text and image messaging, text and photos receiving, RSS feeds, and blogs delivering to your phone and PC. It allows sharing syndicated content on public or private hubs
The EzChat application is a chat application via Bluetooth where the users can exchange text and audio messages between two Series 60 2nd edition feature Pack 1 phones( with minimum of 220 MHz processor). The application also shows the viewfinder images
IM+ Voice for Series 60 - IM+ Voice is a complete voice messaging solution that allows users to exchange text and voice messages between mobile devices and PCs via GPRS like using a walkie-talkie. IM+ Voice enables voice messaging in both streaming and non-streaming modes.
Mobile users of IM+ Voice pay only for GPRS traffic
Octrotalk - a Mobile Instant Messaging with voice and video integration. This always-on product keeps you connected with your buddies, and your buddies reach you whenever, wherever. Works seamlessly over GPRS/EDGE/CDMA/Wifi/Bluetooth data connections, and cuts down your phone bills