GTalk2VoIP Team has released Talkonaut, a Java J2ME based software for MIDP 2.0 capable mobile phones like Nokia, Sony Ericsson and Blackberry that allows Jabber and Google Talk instant messaging users to send free IM and SMS text messages, as well make voice calls to other Google Talk, MSN/Windows Live Messenger, SIP and Talkonaut users. Talkonaut allows you to make cheap VoIP calls to any mobile or landline phones worldwide based on the GTalk2VoIP technology over a GPRS or a WiFI connection as well as send off-line messages to Google Talk or Windows Live Messenger users. This software should also work on any Palm and Windows Mobile device using the IBM Websphere (search this site) Java VM.

This is a revolutionary software for mobile devices. Complete set of features include:

-Based on Jabber (XMPP) protocol. It allows you to connect to Google Talk servers or to any other Jabber servers using any domain name in your JID
-Runs in a full screen mode
-Designed to use GPRS or Wi-Fi service. Talkonaut reconnects to Jabber server each time a data connection is lost and resends buffered data
-Manage your list of contacts by adding, removing or renaming contacts. contacts are stored on Jabber server, not on your phone
-Accept or ignore invitations.
-Allows you to change your current presence status and supports “shared-status-list” feature of Google Talk.
-Shows you your participants’ status information and supports “music status” of your friends.
-Provides sound notificaton on new message or invitation arrival.
-Keeps a list of ongoing chats and allows you to switch between chats easily.
-Keeps chat history while midlet runs. Takonaut can store chat history to GMail service.
-Provides a fast roster navigation feature by pressing first letter of a contact.
-Complete stylus support.
-Allows you to switch between “hide” or “show” offline contacts mode.

#Voice capabilities:

-Allows you to keep a list of mobile or landline phone numbers in your list of contacts and make voice calls to them in a very cheap manner.
-Allows you to make voice calls to your buddies who use Google Talk[tm].
-Allows you to add your buddies who use MSN Windows Live Messenger[tm] to your list of contacts and make voice calls to them.
-Allows you to add SIP URIs to your list of contacts and make voice calls to them (like Gizmo Project users, SJPhone or alike).
-Allows you to make voice calls to other Talkonaut users.

#Extended features:

Talkonaut allows you to send SMS messages to any mobile phone, either listed in your roster or arbitrary entered or selected from your phone book.

While most features are free, the voice and SMS features cost money. Download here