Yahoo Messenger, Gtalk, Live Messenger, Skype or AIM, these all IM clients are good and massively popular. You can use these IM clients to make friends and chat with them, send and receive files, and make video calls.

But these all IM clients have something in common, they do not correspondent with each other. With yahoo messenger; you can chat with only yahoo friends, and the same applies to the rest of other clients.

So, it was necessary to find a client that let you manage all your friends from a single user interface or let you chat with Gtalk, Facebook or Yahoo users from a single account.

This post has 7 IM clients with multi protocol and multi platform support. Some apps are web based and the others are OS based.

(01) IMO
IMO is an online application, you do not need to download anything. You can register to IMO using your Facebook, Twitter and LinkedIn account OR your mobile number. With IMO you can do group chat, make friends, and send short voice messages. It also saves your chat history. You can add MSN, Skype, Yahoo, Google Talk, Facebook, AIM, ICQ, Jabber, MySpace and the other clients to manage them all on a single interface.

(02) Pidgin
Pidgin is a multi platform IM client as Windows, Linux, and Mac OX. It has many other features for users. Pidgin has support for multi chat networks as:

• AIM
• Bonjour
• Gadu-Gadu
• Google Talk
• Groupwise
• ICQ
• IRC
• MSN
• MXit
• MySpaceIM
• SILC
• SIMPLE
• Sametime
• XMPP
• Yahoo!
• Zephyr

(03) eBuddy
eBuddy is a web and mobile messenger, so if you are on a PC you do not need to download. eBuddy is available for Nokia, iPhone, and Android. After login to eBuddy you can chat with your Facebook, Gtalk, Yahoo Messenger, AIL, Live Messenger and ICQ friend using one interface.

(04) Trillian
Trillian is a popular client for desktop (Windows and Mac) and mobile, it’s also available for web. You can manage your Facebook, Foursquare, Linked and Twitter friends. You can manage also desktop clients as Gtalk, Yahoo IM, Windows Live Messenger, AIM, Skype etc.

(05) Digsby
I have already reviewed Digsby. You can manage your email, send instant message and manage your social networking life with Digsby.

(06) Adium
Adium is a free Instant Messenger for Mac OS X that can connect to AOL, MSN, GTalk, Twitter, Facebook, IRC, ICQ, MySpace, Live Journal, Identical, and etc.

(07) Miranda
Miranada is multi protocol IM client for Windows. It is small and very fast, it requires no installation. It has customizable and flexible interface.