Trillian is an instant message (IM) client that supports lots of services. With it, you can connect to Windows Live, Facebook, Twitter, Gtalk, AIM, Yahoo, among others. One great thing about this app is that it can sync your information with the iPhone app, which means that your settings, contacts and messages will always be the same on both devices.
When you first start the app, there is a small registration process. You need to create and confirm an account with Trillian so that you can use the syncing features and push notifications on the iPhone. After that, you simply add the services that you want to use. In my testing, I used WIndows Live. The account was added without problems and my contacts were shown just exactly like I have them arranged on the official Windows Live Messenger app. Talking with the help of them was fast and smooth.
During my time with the app, it remained connected and I was able to chat with no problems. From the Preferences window, you can setup your privacy settings and some general settings.
In short, if you are looking for a multi-protocol IM client, Trillian can be a great choice. I am going to keep it for a while to see how it fares in the long run.
Freeware Mac OS X IRC client created by Steve Green.
Allows you to check your Facebook account from your desktop.
Instant access to multiple Facebook accounts and desktop notifications.
Use Facebook Messenger right from your macOS desktop.
Computer monitoring and recording program.