Mattermost is described as 'Secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams' and is a very popular Group Chat app in the social & communications category. There are more than 100 alternatives to Mattermost for a variety of platforms, including Web-based, Android, iPhone, Windows and Mac apps. The best Mattermost alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Discord. Other great apps like Mattermost are Slack, Zulip, Stoat Chat and Utopia.
Ryver provides all of your team communications in one place: chats, posts, and files. Invite as many team members and guests as you need.
Teams.cc is a communication application for increasing team collaboration that you can install on your PC or mobile device. This software has the ability to revolutionize the way you collaborate due to its unique functionalities.
hack.chat is a minimal, distraction-free chat application. Channels are created and joined by going to https://hack.chat/?your-channel. There are no channel lists, so a secret channel name can be used for private discussions.
Source code : https://github.com/hack-chat/main.
Chanty helps teams improve productivity and business communication. Unlimited message history, task management, file sharing and powerful notifications organize and save your day. Collaborate and communicate effectively in one place.
Grow a community, connect with your friends, or whatever you're capable of with Adapt, a lightweight and customizable messaging platform which favors your privacy.
Seamlessly integrated Video conference, messenger, doc creation and storage, smart integrated calendar, AI assisted real time translations and more all wrapped up a single mobile -first next gen product.
Slenke is an internal social network for your company to securely communicate, share files, manage projects, organize tasks, track time and more. View updates and keep track of whats happening at the workplace no matter where you are.
Circuit collaboration software improves teamwork by bringing voice, video, screen-share, messaging, and file sharing together into a single platform with one unified view.
RemoteHQ is revolutionizing collaborative browsing for teams with our Remote Browser, a multiplayer cloud-based browser.
RelayBeam is a messaging platform with an innovative multi-port feature for enhanced communication.
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