Messaging Apps

WhatsApp
Free
A cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
Telegram
Free (Open Source)
A messaging app with a focus on speed and security.
Ferdium
Free
All your services in one place built by the community.
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!
Discord
Free
All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone.
Linphone
Free
Communicate freely with people over the internet, with voice, video, and text instant messaging.
Mesh
Free
One messenger for Internet and LAN chat with end-to-end encryption.
Loom
Free Trial
Instantly ready to share and watch – at home, in the office, or a bit of both.
AdiIRC
Free
An IRC client with multiserver support and a customizable interface.
Franz
Free
A free messaging app for WhatsApp, Facebook Messenger, Telegram, Slack and more.
HighSide
Free Trial
The secure Slack/WhatsApp alternative for organizations handling regulated/sensitive data.
Skype
Free
Skype keeps the world talking. Call, message and share whatever you want for free.
Softros LAN Messenger
Free Trial
An easy-to-use LAN messaging application for safe, secure and effective intra-office communication.
BeeBEEP
Free
An open source, peer to peer, LAN messenger.
Element
Free
Secure and independent communication, connected via Matrix.
Gajim
Free
A fully-featured XMPP client.
KakaoTalk
Free
MicroSIP
Free
SIP softphone for Windows based on PJSIP stack
Netchat
Free
Chat with other users in the same subnet.
Trillian
Free
Chat with other Trillian users or those on Facebook, Google, AIM, ICQ, XMPP, Yahoo!, Twitter, and more.