The best I.M. Client Downloads

Updated 10 Jun 2011
VoiceMaster
VoiceMaster is a free and easy-to-use program which enables users of Skype to change the pitch of their voice while using any of the audio-related features of Skype.
1.6 MB | For Windows 7, Windows 8 / Vista / XPFree
VoiceMaster Review - Download
Facebook Video Chat
An alternative to Facebook's video calling feature by Skype with webcam support: Facebook Video Chat is an additional third party application which integrates video chat directly in to the Facebook site, bypassing their official Skype-powered Facebook Video Calling feature.
600 KB | For Windows 7, Windows 8 / Vista / XPFree
Facebook Video Chat Review - Download
HexChat
HexChat is an IRC client based on XChat, but unlike XChat it's completely free for both Windows and Unix-like systems.
6.3 MB | For Windows 7, Windows 8 / Vista / XPFree
Tweeki
Tweeki is a Windows-based Twitter client which allows users to search Twitter, read mentions, send private messages, discover trends, and browse through your timeline.
784 KB | For Windows 7, Windows 8 / Vista / XPFree
Pidgin Portable
Pidgin Portable is a free open-source instant messaging client.
14.9 MB | For Windows 7, Windows 8 / Vista / XPFree
Pidgin Portable Review - Download
MetroTwit
A (discontinued) Twitter client built on modern a Windows interface with unlimited scrolling: MetroTwit is a small and now discontinued Twitter client for Windows.
485 KB | For Windows 7, Windows 8 / Vista / XPFree
MetroTwit Review - Download
Digsby
Digsby is a successfully implemented multi-protocol instant messenger client which serves as an alternative to having multiple different clients running to access your friends lists and to chat with your friends on multiple networks.
19.4 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XPFree
Digsby Review - Download
Gajim
Gajim is a fully-featured and easy to use Jabber/XMPP client.
41.5 MB | For Windows 7, Windows 8 / Vista / XPFree
Signal Desktop
If you're worried about what Facebook is doing with your WhatsApp chats, then it might be time to consider moving to a more secure system and Signal fills that void.
87.6 MB | For Windows 7, Windows 8 / Vista / XPFree
Signal Desktop Review - Download
IceChat
IceChat is an IRC ( Internet Relay Chat) program.
2.7 MB | For Windows 7, Windows 8 / Vista / XPFree
BitWise IM
If you're interested in taking advantage of encryption when chatting over the Internet, the BitWise Chat may be something which would peak your interest.
3.24 MB | For Windows 7, Windows 8 / Vista / XPFree
BitWise IM Review - Download
WhatsApp
Access your WhatsApp chats, groups, images and audio from a desktop PC but without support for audio or video calling: If you're a user of any type of modern cell phone, then you must have heard of WhatsApp -- an excellent way to send text messages, videos and photos along with group chats.
77.71 MB | For Windows 7, Windows 8 / Vista / XPFree
WhatsApp for PC Review - Download