Messaging Apps

Telegram
Free (Open Source)
A messaging app with a focus on speed and security.
Rambox
Free
The only way to organize your workspace and boost your productivity.
Ferdium
Free
All your services in one place built by the community.
Franz
Free
A free messaging app for WhatsApp, Facebook Messenger, Telegram, Slack and more.
TeamSpeak Client
Free
Quality voice communication via the Internet.
AdiIRC
Free
An IRC client with multiserver support and a customizable interface.
Linphone
Free
Communicate freely with people over the internet, with voice, video, and text instant messaging.
Viber
Free
Lets you send free messages as well as make free calls to other Viber users, on any device and network, in any country!
BeeBEEP
Free
An open source, peer to peer, LAN messenger.
Softros LAN Messenger
Free Trial
An easy-to-use LAN messaging application for safe, secure and effective intra-office communication.
IP Messenger
Free
A pop up style LAN Messenger.
Discord
Free
All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone.
Session
Free
An end-to-end encrypted messenger that minimises sensitive metadata, designed and built for people who want absolute privacy and freedom from any form of surveillance.
Skype
Free
Skype keeps the world talking. Call, message and share whatever you want for free.
Trillian
Free
Chat with other Trillian users or those on Facebook, Google, AIM, ICQ, XMPP, Yahoo!, Twitter, and more.
RealPopup
Free Trial
Provides a comprehensive LAN-based instant messaging solution for local network communication.
Pidgin
Free
A chat program which lets you log in to accounts on multiple chat networks simultaneously.
mIRC
Free
A popular Internet Relay Chat client used by millions of people, and thousands of organizations, to communicate, share, play and work with each other on IRC networks around the world.
WhatsApp
Free
A cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
HighSide
Free Trial
The secure Slack/WhatsApp alternative for organizations handling regulated/sensitive data.