4 Best Mattermost Free Alternatives in 2026

What is mi.team?

mi.team is a collaboration software that provides all the necessary tools to help teams communicate, plan, organize and execute on projects from a simple to complex level. Empower your team with features like Screen sharing, Chat with audio/video, Document collaboration, Discussion board, File ...

What is Rocket.Chat?

Rocket.Chat is an instant-messaging and team collaboration platform for enterprises and organizations that need private messaging, persistent chat rooms, direct messages, persistent user presence and file transfer capabilities. It does not require the installation of any client software, which ...

What is Output Messenger?

Output Messenger is an easy to use software that allows business to connect with others and keep in touch, regardless of proximity. Output Messenger provides instant chat options, file sharing, a task manager and more. It also can work at no cost with business operations over the web, using ...

What is Teamwork Chat?

Teamwork Chat is your ultimate team collaboration platform for improved communication and teamwork. With options such as team channels, personalized messages, file sharing, integrated Teamwork modules and more, this software solution helps organizations reach higher productivity levels while ...