Adium Alternatives for Mac
There are many alternatives to Adium for Mac if you are looking to replace it. The most popular Mac alternative is 
Element, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Adium and many of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Adium are 
Tox (Free, Open Source), 
Pidgin (Free, Open Source), 
HexChat (Free, Open Source) and 
Trillian (Freemium).
- A free instant messaging and collaboration software based on the Matrix protocol.
- Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.
- Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once.
- HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems.
- Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them!
- The goal of Gajim is to provide a full featured and easy to use XMPP client. Gajim works nicely with GNOME, but does not require it to run.
- ICQ is one of the oldest instant messengers. First developed by the Israeli company Mirabilis, sold to AOL, sold again and currenly owned by the Russian "mail.
- Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers.
- Message and video chat with your friends and family for free.Features- Make high-quality video and voice calls on Android and iPhone
- Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins.