Program that allows you to send SMS messages to cell phones.
Modified version of WhatsApp offering advanced customization and 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.
Twitch chat client for those who prefer a desktop application.
Free XChat-based IRC client.
Utility for network communication that, in addition to text, allows exchanging files and images.