Gizmo5 was discontinued by Google, but don't worry we have compiled a list of Gizmo5 Alternatives:
Magic Mail Monitor (MMM) is a free POP3 mail monitor with multiple accounts support. It sits silently in your system tray, and notifies you about new messages in your mailboxes. Then you can preview messages and delete unwanted mail in order to avoid spam and viruses.
Gmail Notifier Pro is a Windows application capable of checking multiple Gmail accounts for new mail and display notifications.
An instant messaging app that provides online text message and video chat services.
Linphone is an internet phone or Voice Over IP phone (VoIP).
RetroShare is a open source cross-platform, private and secure decentralized communication system.
Message and video chat with your friends and family for free.
Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with any IP-based communications systems and infrastructure.
Tkabber is a Free and Open Source client for the Jabber instant messaging system.
Combining voice calls, video calls and Instant Messaging in a simple interface, CounterPath’s X-Lite helps you seamlessly transition from a traditional phone environment into the world of Voice over IP.
Blink, a state of the art, easy to use SIP client.
Cloud Phone is a virtual pbx that enables small businesses to quickly, easily, and affordably set up a business phone solution without having to purchase hardware.
Firefly softphone is the easiest way to try Freshtel’s great service from the comfort of your PC.