Gilly Messenger is an alternate MSN client that has a very simple interface, a responsive UI and useful set of features that makes it powerful.
Other free msn clients are bloated with features that hog system memory and thus slow down the overall user experience. Gilly Messenger is specifically programmed for computers with scarce resources. It is light on memory and signs in to the MSN network very fast even on dial-up connection.
Despite being light and simple it has alot of features that are not yet part of Windows Live Messenger e.g. Scripting Engine, Remote Control, e.t.c.
Features:
Multiline nicknames.
Talk to people while they're blocked.
Keep talking to people even after appear offline.
Keep talking to people even after signing out.
Open multi instances of GM.
Search your contact list.
Chat Logger.
Status logger.
Text Styler (Word/Character replacement tool).
Auto Message.
Chat Bot.
Unlimited Message length.
No invite limit.
IM Window commands e.g cls, /block/ ignore e.t.c.
New idle state (If GM is not used for 5 mins it will change your status to idle).
New ignore option (Prevents people from sending you message).
Easy to change nick and status.
Block alert.
Delete alert.
Add alert.
Choose status before signing-in.
Store comments on contacts.
Contact renaming (Custom Nick).
Have a fake nick in conversation.
Emoticon flood control.
Message All option.
MSN Messenger like interface.
Get to know when someone opens your window.
Get to know when someone closes yoru window.
Contact statistics (last online time, last message time, last File Transfer ip, e.t.c.).
IM Encryption.
Random IM Colors.
Random IM Formatting.
Contact list cleaner.
Popup Filter.
Sound Filter.
Change file transfer port to bypass firewalls (Does not work from MSN to GM).
Store password for multiple accounts.
GM Display Pics (Only viewable to GM users).