Slack is certainly a fine product. It’s a simple product that is often used in corporate sector. One drawback is that it is a paid app and often loses history as the space increases. Security and losing messages have become quite random in this app. So it’s time to let good slack and allow the new generation of messaging system to take over the corporate chat system because slack is not evolving from its mechanism and adapting to complex features. The best app that comes to your mind when you are trying to replace slack is mattermost. No more worries about paying for the app with increase in number of employees because mattermost here is an open source. It has free trial available so you can get it tested before implementing on to your work environment. You can follow the basic guidelines available at mattermost.com/blog/ to get it downloaded and using it.
Both of these messaging apps have contributed a lot in productivity in work environment. You no more require your mail chain to contribute the discussion, you just have to chat with your colleagues and client in the messaging app thus taking less time and making your work easier. You have search option also available to find the topic. It is also easier to connect with any kind of decide like desktop or mobile. But mattermost has won the competition with providing security to your chats as well as respect your privacy. You can read all about it at mattermost blog. You can easily add up different features suiting your needs. You can just download the source code and make changes accordingly. You will find more about legal compliance protecting the laws and agreements thus reducing the risk. Adding to it, mattermost are scalable depending upon the users in a team.