Ignite Realtime Spark is really great for group chats/conversations between employees who may work remotely.

I like that with Spark I am able to instant message a coworker allowing for faster communication

Its a simple chat application which can be used for internal communication in office. We can easily connect with our colleagues in office and discuss about the issues instantly over messages.The best thing is that we can create a private conference room for our team and set a password for the conference.Its user friendly and easy to use. It also has bookmark feature which can instantly take you the saved pages in browser.We can also store the conversation history so that important messages can be accessed back easily.