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About

Diode Collab™ is a decentralized, local-first collaboration tool that combines secure chat, file sharing, VPN-like access, and team coordination inside a private “Zone.” All communication and data stay fully end-to-end encrypted, with no third-party servers involved - not even Diode can see your activity. Use it for secure messaging, files, notes, dashboards, and external uploads—without ever compromising identity or privacy.

About

Mattermost is a flexible, open source messaging platform that enables secure team collaboration. Build intuitive workflows and collaborate across large teams without worrying about security or data privacy. Get up and running quickly with hundreds of existing integrations, or build out custom workflows that scale to tens of thousands of concurrent users. Many of the world’s leading privacy-conscious enterprises work better with Mattermost by connecting people, tools, and automation to increase collaboration. DevOps teams use Mattermost to power collaboration at every stage of the DevOps lifecycle. Mattermost unifies people, tools, data, and automations to help your team increase innovation and agility. Mattermost is an open source Slack alternative. It's written in Golang and React and runs as a single Linux binary with MySQL or PostgreSQL. Use the features you like (file sharing, real-time group chat and webhooks—to name a few) and access the source code.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Teams

Audience

Small business to enterprise interested in high trust, secure, flexible, open source messaging

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$3.25 per user per month
Enterprise: $8.50 per user per month
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 4.6 / 5
features 4.6 / 5
design 4.2 / 5
support 4.6 / 5

Reviews/Ratings

Overall 4.5 / 5
ease 5.0 / 5
features 4.5 / 5
design 4.5 / 5
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Diode Collab is the only chat and file sharing app that I know of that doesn't store data on the cloud AND that doesn't require us to run a server. It has chat, but importantly also has a "drive" UI like Google Drive. Also, we routinely need to provide our team with private AI and private dashboards for our business systems - Diode Collab integrates with the rest of their zero trust networking capabilities and makes this basically one-click.
  • Using Diode has been a really smooth experience overall. Once you get going, everything just makes sense clients, fleets, zones, and secure connections all work together without needing centralized servers or extra services. I really like knowing that everything is end-to-end encrypted by default and that I’m fully in control of my identity and access.
  • I use Diode Collab almost daily. It let's me chat and share assets securely with clients. It's easy to set up and onboard. What I like most is the ability to create secure zones for my clients that only they can access. The usernames are anonymous so there is no personal information needed. When we need security and anonymity, Diode is the solution.
  • It takes privacy and security seriously, unlike its mainstream competitors. It also looks great, is fast, and just works.
  • I've been testing Diode Collab for a few months — actually since the very beginning — and I consider it an excellent communication tool for anyone who values the security of their data and information. One of the features I like the most is the ability to create your own zone, like a private server or community, similar to platforms like Discord or Slack — but with zero-trust protection built in by default. That level of privacy is simply not offered by traditional tools.

Cons

  • It is more complex than a consumer chat app - more like Slack or Discord, so that always takes new team members some time to get used to it. They use blockchain to achieve the "Self Custody and Serverless" approach, so things that require blockchain transactions take longer than normal apps. e.g. when you join a Zone, that takes a minute or two, whereas with other chat apps like Slack it is faster.
  • Honestly, I don’t really have anything negative to say. If I had to nitpick, there’s a bit of a learning curve at first just because Diode does things properly instead of taking shortcuts, but once you understand it, it all clicks. Other than that, no issues, no headaches, and nothing that takes away from the overall experience.
  • Diode uses blockchain authentication so a new zone may take up to 5 minutes to initialize, but it's a small price to pay for zero trust security.
  • There's nothing I don't like. It just needs more adoption!
  • There’s a small learning curve at first, especially for users unfamiliar with decentralized tools — but once you get the hang of it, the experience is smooth and rewarding. I believe that with every new update, the user experience will become even more intuitive.

Pros & Cons from Real Users

Pros

  • Mattermost promotes the creation of documents that allow us to retain information in the short, medium, and long term and communicate between my colleagues and me through its efficient chat function. It is an incredible resource that helps us significantly reduce information loss over time, compare files and efficiently flow important information. Its platform is impressive and promotes communication and collaboration among colleagues in an effective way.
  • Mattermost is a messaging tool. Very innovative software helps in increasing productivity and efficiency of our team. Automatic workflows and easy to use. Secure and reliable software. Lots of features like don't disturb mode, emoji, sharing images, links and files. It can send thousands of messages in a minute.

Cons

  • I have not had any problems with this platform; it has worked properly and completely meets our expectations. It is excellent for work teams to stay in sync through chats to share resources, information and advance their activities.
  • No cons. After using Slack this is second best option to use.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Diode
Diode.io

Company Information

Mattermost
Founded: 2015
United States
mattermost.com

Alternatives

Alternatives

Pumble

Pumble

CAKE.com Inc
Server Compass

Server Compass

StoicSoft

Categories

Categories

Collaboration Features

Brainstorming
Calendar Management
Chat / Messaging
Contact Management
Content Management
Document Management
Project Management
Real Time Editing
Task Management
Version Control
Video Conferencing

Team Communication Features

Activity / News Feed
Audio Calls
Calendar Management
Chat / Messaging
Discussion Threads
File Sharing
Mobile Access
Push Notifications
Search
Surveys & Feedback
Task Management
Video Conferencing

Internal Communications Features

App Integration
Blogs
Chat/Messaging
Email Management
Employee Directory
Event Calendar
Newsletter Management
Photo Gallery
Social Sharing
Survey Management
Telephony
Video Chat
Voice Chat

Integrations

Azure Marketplace
Crashtest Security
Discourse
Focalboard
Frisbee
IBM Z System Automation
Jitsi
Kamatera
Kondukto
Latenode
Make
Opsera
Rambox
Rootly
Stackhero
Tuleap
XEOX
ZnowPulse
Zoom
contboxx Vault

Integrations

Azure Marketplace
Crashtest Security
Discourse
Focalboard
Frisbee
IBM Z System Automation
Jitsi
Kamatera
Kondukto
Latenode
Make
Opsera
Rambox
Rootly
Stackhero
Tuleap
XEOX
ZnowPulse
Zoom
contboxx Vault
Claim Diode Collab and update features and information
Claim Diode Collab and update features and information
Claim Mattermost and update features and information
Claim Mattermost and update features and information