When it comes to keeping in touch with your friends and families in a quick and meaningfull way, IM Plus by Shape Services brings you the must have mobile messaging application that nothing else can probably beat. Shape Services IM Plus is the complete package of multiple Instant Messaging clients in one compact yet feature rich mobile application that is compatible with all versions of Symbian smartphones of Nokia.

IM Plus or IM+ by Shape Services comes with the most needed feature of absolutely zero costs on per instant messages transferred. This means that using IM Plus you will not be charged for any incoming or outgoing messages to and from the software itself. Whether you are using MSN or Windows Live Messenger, Yahoo, AOL, ICQ, Google Talk etc or anything similar is of no importance here when it comes to cost of messages during a chat or private messaging session.
IM Plus lets you bring all the important activities of social messaging services like sending and receiving multiple types of file transfers including your photos and videos, leave and manage voice messages, participate in dynamic ‘reply to’ style chat sessions, setting status manually and automatically when signed in etc. It is also one of the most award winning mobile applications of all time!
IM Plus presently supports Windows or MSN Live Messenger, AIM Messenger or iChat, Yahoo IM, Google Talk, MySpace Chat, ICQ Chat, Jabber Messaging. Facebook Chat is one of the services that they presently do not support and I guess we can only hope that in the future it will bring Facebook within its supported list of networks.
IM Plus supports a wide range of mobile devices and PDA smartphones, from the Apple iPhone to the Nokia 3230, almost every phone type is supported. Some services however, are offered only in certain high end smartphones and some specific features depend on your mobile device’s capability to run them.
Nokia smartphones with the Symbian based OS including the Feature Pack version 1 (or Symbian 9.1), Version 2 (or Symbian 9.2), Version 3 (or S60 V3) and Version 5 (or S60 V5) are all officially supported by IM Plus.
This means that Nokia N-Series based smartphones that are officially supported are: N91, N92, N93, N95, N95 8gb, N96, N97, N78, N79, N80, N81, N82, N85, N86, N73, N75, N76, N77, N72, N70 and N71. Likewise, the E-Series based smartphones like E50, E51, E60, E61, E62, E63, E65, E66, E70, E71, E72, E90 etc are also known to work smoothly with this amazing all in one messaging mobile application for Series 60 Symbian. Regular S60 mobile phones including the 6120, 6121, 6290, 5700 XpressMusic, 5500, 5800 Touch UI XpressMusic are also in the list of supported phones.
Some of the highlights of the Symbian version of Shape Services IM Plus are listed below for better evaluation of this cool amazing mobile app:

No hidden IM charges, fees etc for any instant messaging from the client end.
Supports intuitive private messaging elements like avatars, smileys etc.
Speedy transfer for all your files, videos and photos from one place.
Automatic messaging logs and chat history for all the services on any handhelds.
Dynamic message and contacts search within one or in all the IM services.
Complete management of status messages, both in automatic and manual mode.
Full support for complete contacts management, blocking, deleting, allowing etc.
Automatic set up and orientation in landscape and portrait mode.
Supports multiple chatting sessions, pop up messages and dialogs without any delay whatsoever.
Supports templates based instant messaging and
Supports multilingual private messaging provided that your phone supports it.

All in all this all in one Instant Messaging mobile client is one hell of a must have application that almost anyone should install on their Nokia S60 mobile device because it makes life easy and keeps the bill at zero.
Downloads (for S60 smartphones, version 8.09):
Updates (10 December 2009):
Updated Downloads of Shape Services IM Plus version 8.11 for S60 Symbian:
Source: nokiasymbianthemes