WhatsApp Plus: Unofficial mod with more customization and features.
Instant messaging app that allows you to send texts, photos, videos, audios, documents, and make voice and video calls, both one-on-one and in groups.

Oldest and most popular IRC client in the world in its latest version.
Utility for network communication that, in addition to text, allows exchanging files and images.
WhatsApp MOD blends Android functionality with iPhone elegance, delivering a unique experience.

Telegram Client for Windows.