eBuddy, Palringo, or Meebo are probably the most widely used apps.
Nokia Lumia 1020, Nokia Lumia 928, iPhone 5S
Microsoft Surface Pro 128GB
Retired: Helio Ocean, HTC Touch Pro, HTC HD2, HTC EVO 4G, HTC HD7, HTC Touch Pro2, HTC HD7S, HTC One X, HP Veer 4G, HTC TITAN, HTC Thunderbolt, HTC One, Nokia Lumia 800, Nokia Lumia 900, Nokia Lumia 920, HTC Droid DNA
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