Franz allows you to group all of your messaging and chat services within one easy-to-configure application.
WhatsApp Android MOD that adds several extra 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.
Text, voice and video communication software.
Application that allows you to record phone calls, enabling automatic and discreet registration of conversations conducted on the device.

Telegram Client for Windows.