IM all your friends in one place
Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.

Supported chat networks:

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

Supported Languages
Pidgin is translated into many different languages, thanks to the generous contributions of our volunteer translators. You may be glad to know that Pidgin is already translated into Spanish!

AfrikaansAlbanianAmerican EnglishArabicAustralian EnglishBelarusian LatinBengaliBokmal NorwegianBosnianBritish EnglishBulgarianCanadian EnglishCatalanChineseCzechDanishDutch, FlemishDzongkhaEnglishEsperantoEstonianEuskera(Basque)FinnishFrenchGalicianGeorgianGermanGreekGujaratiHebrewHindiHong Kong ChineseHungarianIndonesianIrishItalianJapaneseKannadaKoreanKurdishLaoLithuanianMacedonianMongolianNepaliNorwegian NynorskOccitanPashtoPersianPolishPortuguesePortuguese-BrazilPunjabiRomanianRussianSerbianSimplified ChineseSinhalaSlovakSlovenianSpanishSwedishTamilTeluguThaiTraditional ChineseTurkishUrduVietnamese

http://www.pidgin.im/