Talkonaut is free mobile calling, VoIP enabled, Google Talk like application for your mobile phone. Talkonaut is available for three different mobile platforms: Symbian S60, Windows Mobile 5/6 and J2ME with MIDP-2.0. Talkonaut is known to be working on more than 500 different mobile handsets
ICQ Messenger for Symbian - Keep in touch with friends and family from your mobile phone using ICQ Messenger.
· Send unlimited free messages and enjoy all the familiar ICQ features directly from your mobile phone.
· Add friends from GoogleTalk , Mail.ru, odnoklassniki, Vkontakte, and Jabber-supported messengers to your ICQ contact list
BTExplorer - a powerful and user-friendly Bluetooth application for Windows CE and Windows Mobile based devices. BTExplorer can provide rich stand-alone Bluetooth functionality via its flexible user interface or it can be extended and configured to act as a component of a larger Bluetooth-enabled solution
fring for Symbian 9.2 - 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)
IM+ FREE All-in-One Messenger for S60 v3, S60 v5, and Symbian^3 -
Chat within MSN® /Windows Live, Yahoo!® , AIM®/iChat, ICQ® , Jabber®, Google Talk, Facebook and MySpace® messengers from your mobile device regardless of location and mobile operator
The free RockeTalk application provides a complete social media experience on the mobile handset with social networking, community creation and participation, media upload/download and posting/publishing to other mobiles as well as the web
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
IM+ for Skype® enables voice and text communication with other Skype users and provides cost-effective calling to landlines and mobiles.
Call Skype users to their PCs. With IM+ for Skype you can talk with other Skype users all over the world.
Make cost-effective calls to any destination