We Tested the 10 Best MatterMost Alternatives in 2025

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In 2016, the news dropped that Uber had switched from Slack—the fastest-growing messaging platform for businesses—to Mattermost, the underdog in that space.
The reason? Slack did not feature a suitable security framework for technical teams with complex operational needs. So Uber decided to build its own internal communication tool in partnership with MatterMost. ?
There weren’t many enterprise-grade communication and collaboration tools at the time, of course, and the ridesharing giant wanted a more ‘secure’ team collaboration tool for their technical teams.
So, Mattermost grabbed its share of the limelight, becoming a popular communication platform for large-scale businesses.
But in the next five years, tools like Slack and Microsoft Teams added robust security and privacy features. The tables turned, and Uber returned all its 38,000 employees back to Slack. (source)
While MatterMost is still a popular tool for security-conscious teams, many others have eaten away at its share in the pie. ?
In this blog, we will explore top alternatives to MatterMost, focusing on rich communication features and enterprise-grade security measures. This will help you select a robust collaboration tool that your team deserves.
Picking an online collaboration tool for your team shouldn’t be a tough nut to crack. In all honesty, there are three main things to consider: communication features, privacy and security compliance, and integration support.
You should consider these additional factors, too:
Now that you know what features to look out for when picking a team collaboration tool that’s equally secure and versatile, let’s look at the top MatterMost alternatives.
Here’s a list of our top 10 team collaboration apps that are just as secure and user-friendly as MatterMost but with extra features and functionalities thrown in.

ClickUp is an all-in-one workspace collaboration platform that provides robust team communication, project management, and document management solutions—all in one place!
A holistic team communication tool, ClickUp provides real-time and asynchronous collaboration options with features ranging from the ClickUp Chat view and built-in email integration to video recording with Clip in ClickUp, ClickUp Whiteboards, and ClickUp Mind Maps.

Not only that, your teams can also collaborate on shared projects and documents via comments and chat. It lets users edit documents alongside teammates and even email them from within the app.
On top of it all, ClickUp AI makes drafting communication, editing documents, and summarizing meetings a breeze. And the best part? You can do all of this from a single workspace in ClickUp without juggling multiple work apps or communication tools.
If you’d like a tool to make managing and monitoring cross-functional projects easy, consider ClickUp’s Cross-Functional Project Template.
You can use it to organize projects into departments for better visibility. To keep track of progress, you can divide tasks into five statuses: To Do, Stuck, In Progress, Complete, and Blocked. Update statuses as you progress through tasks to keep all stakeholders on the same page regarding project status.
The template contains a Gantt chart and Burndown view to help you monitor progress visually. Overall, this template simplifies inter-departmental collaboration within any organization.

Slack is a widely used cloud-based collaboration platform designed to facilitate team communication. It was launched in 2013 and acquired by Salesforce in 2020. The platform is well-known for its real-time messaging features (DMs, threaded conversations, video calls) and extensive integrations.
Slack simplifies communication through individual channels for your teams and projects with multiple team members. This and other features like direct messaging, typing indicators, and audio/video calls promote real-time interaction.
Slack also integrates with various third-party tools, enabling users to customize notifications and create a more cohesive workflow.
Check out these Slack alternatives!

Element, previously known as Riot.im, is a matrix-based, secure, and open-source communication platform. Developed by the Matrix.org Foundation, it aligns with the broader mission of Matrix to establish an open standard for “secure, interoperable, and decentralized messaging.”
The platform supports end-to-end encryption and offers a variety of real-time messaging, file sharing, and collaboration features. Users get secure data protection through end-to-end encryption for both cloud and on-premise deployment.
The platform is excellent for real-time collaboration. It also offers unlimited voice and video calls, and you can improve your workflows with several bridges, bots, and widgets.
However, the mobile app is heavy and clunky, and the tool has fewer integration options than ClickUp, Slack, and others on this list.

Among the oldest open-source communication tools, Pidgin (originally called Gaim) is a basic free-to-use and ad-free instant messaging (IM) and collaboration platform. Its code is licensed under the GNU General Public License, meaning that organizations can modify the platform per their needs.
But there’s a caveat—since it’s free to use, you must publish your changes to the platform so the whole community can benefit.
While you can customize the tool to fit your needs well, it is not the most suitable platform for large teams with complex needs.

Formerly known as Office 365, Microsoft 365 is a well-known cloud-based workspace apps suite by Microsoft. The workspace includes a team collaboration tool called Microsoft Teams.
MS Teams has become a central hub for teamwork, with channels to organize conversations by topic and DMs for 1:1 communication. It also integrates with various Microsoft and third-party applications, providing a unified team communication and collaboration environment.
The workspace is also highly secure: With multi-factor authentication, data encryption, and advanced threat protection, the software ensures your data is preserved and kept safe at all times.

Jitsi is a popular open-source video conferencing platform. Over the years, its ownership has passed from Blue Jimp to Atlassian, and finally to 8×8 in 2018. Despite these changes, it remains true to its open-source ideology committed to decentralizing communication over the internet.
Jitsi provides two flagship products—VideoBridge and Meet—that are WebRTC-compatible and come with video-conferencing features like video calls, screen-sharing, simulcasting, and more.
However, Jitsi doesn’t provide text-based communication tools, making it a turnoff for most teams.

Webex by Cisco is a leading platform for virtual collaboration and comes with a variety of messaging and video conferencing solutions. It has eight key features and tools: calling, messaging, webinars, events, meetings, polling, whiteboarding, and video messaging.
The best part is that they’re all powered by a capable AI model. These capabilities make Webex one of the most comprehensive workspace collaboration tools that address the challenges of remote and hybrid workplaces.
However, its key security features are only available on the higher-tier plans, so it may not be suitable for small teams.

A top alternative to MatterMost, Rocket.Chat terms itself as the team collaboration platform for ‘privacy-conscious’ organizations. With over 1500 contributors from around the world, Rocket.Chat is an open-source organization that aims to help companies streamline team communication without worrying about data security or privacy.
Rocket.Chat provides instant messaging and video conferencing capabilities, making it a good choice for remote and hybrid workplaces. The platform also integrates with other messengers like WhatsApp, Instagram, and Telegram, making it easy for organizations to bring all communication to one place.

Now, this one needs no introduction!
Google Workspace, formerly known as G Suite, is a suite of cloud-based productivity tools developed by Google. Launched in 2006 with its initial offerings of Gmail and Google Calendar, Google Workspace now includes tools such as Google Drive, Docs, Sheets, Slides, and more.
Over the years, Google Workspace has become the go-to platform for small and large businesses. The two popular team collaboration apps in Google Workspace include Chat (for instant messaging) and Meet (for video conferencing).
Check out these Google Workspace alternatives!

Flock is excellent as an online collaboration platform for cross-functional work, and it comes with built-in messaging, video conferencing, and even project management features.
Key features include real-time messaging, video conferencing, voice notes, and to-do lists. It also supports advanced user controls, single sign-on, and customizable file retention policies.
Check out these Flock alternatives!
While no single team collaboration software can fit the unique needs of all teams, we suggest picking a tool with various collaboration options. That way, your team won’t feel restricted.
An ideal team collaboration tool should provide real-time and async collaboration options, top-notch security measures, and good customer support. ClickUp does all this and provides training sessions and 24/7 support for all users, including those on the Free plan.
So go ahead and give ClickUp a shot. ?
Sign up for free and see why ClickUp is an excellent alternative to MatterMost.
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