Top 12 Open-Source Alternatives to Microsoft Teams

Microsoft Teams

Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.

Product categories

CRM CRM Platforms Chat Communication Group Chat & Notifications Group Messaging Instant Messaging Messaging Project Management Task Management Team Collaboration Work Collaboration

Summary

The top open-source alternatives to Microsoft Teams are Group Office, Mattermost, and Telegram. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Group Office Landing Page
1

Group Office

Group-Office is an enterprise CRM and groupware tool.
Pricing:
- Open Source
#Project Management #No Code #Enterprise Communication
Mattermost Landing Page
2

Mattermost

Mattermost is an open source alternative to Slack.
Pricing:
- Open Source
#Team Collaboration #Work Collaboration #Web And Video Conferencing 59 social mentions
Telegram Landing Page
3

Telegram

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Pricing:
- Open Source
#Communication #Messaging #Instant Messaging 129 social mentions
Discord Landing Page
4

Discord

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 122 social mentions
Rocket.Chat Landing Page
5

Rocket.Chat

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Chat 65 social mentions
Bitrix24 Landing Page
6

Bitrix24

Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
Pricing:
- Open Source
- Freemium
- Free Trial
- $69.0 / Monthly (6 users / 50 GB / CRM+)
#Project Management #Task Management #Communication
Element.io Landing Page
7

Element.io

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Pricing:
- Open Source
- Free
#Group Chat & Notifications #Communication #Chat 1 social mentions
Signal Landing Page
8

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
Yammer Landing Page
9

Yammer

Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
Pricing:
- Open Source
#Project Management #Task Management #Communication
Hive Landing Page
10

Hive

Seamless project management and collaboration for your team.
Pricing:
- Open Source
- $12.0 / Monthly (Per user)
#Productivity #Project Management #Task Management 9 social mentions
Zulip Landing Page
11

Zulip

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 50 social mentions
Wire Landing Page
12

Wire

Private & Secure Messenger
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 14 social mentions