Kato alternatives

Communicate with your team and your partners, vendors and customers in one place — without the noise. Large organizations with many teams stay connected thanks to one unified roster. Robust integrations and notifications for important events deliver all the information you want in one place. Dont’t let your tools dictate how you work. Seamlessly switch a conversation from text to video or share your screen to get more done faster.
Kato alternatives are:
Slack, Yammer, HipChat
Here are the latest news about Kato:

2014 Business chat Kato launches free team version

Kato.im, the real time collaboration tool for business, has launched a new product - Kato Teams —  a free professional chat solution offering live 1:1 and group messaging, file sharing and search capabilities. Unlike other similar free real time collaboration products, Kato has no limitation of team members, message history storage or multi-company functionality. Kato Teams has a user interface that enables multiple, side-by-side conversations. From a single window, members can display conversations from one or more teams, eliminating the need to toggle between internal chat, external messaging, or multiple browsers. Extra features of Kato Teams include global search, access control, noise control, integration with dozens of third-party services, such as GitHub and ZenDesk, to aggregate notifications from multiple tools.