Slack AlternativesOnly apps from the EU

The best alternative to Slack is Conversations, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Slack and many of them are so hopefully you can find a suitable replacement. Other interesting alternatives to Slack are Movim, Twake, Nextcloud Talk and Mirotalk.

filter to find the best alternatives

Slack alternatives are mainly Group Chat Apps, but if you're looking for Team Collaboration Tools or Video Calling Apps you can filter on that. Other popular filters include Open Source, Self-Hosted, Self-Hosted + Open Source and Free. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Slack.

More about Slack

Add Alternatives

Get a badge for your siteSlack alternatives page was last updated Mar 28, 2026

Conversations
106 likes
Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG].
Cost / License
Free
Open Source (GPL-3.0)
Application typeApplication types
Instant Messenger
Group Chat
Origin
Germany
EU
Platforms
Android
Android Tablet
F-Droid
Germany
EU
+4
Good alternative?Is Conversations a good alternative to Slack?
Movim
56 likes
Decentralized social and blog platform based on XMPP, enabling self-hosting, cross-network chat, video calls, and group collaboration. Users control and migrate their data, communicate across various networks, and access services from any node while preserving privacy and open-source principles.
Cost / License
Free
Open Source (AGPL-3.0)
Application typeApplication types
Video Calling
Social Network
Origin
France
EU
Platforms
Online
Self-Hosted
France
EU
+6
Good alternative?Is Movim a good alternative to Slack?
Twake
29 likes
Twake is a real-time teamwork platform. It is a suite of collaborative tools that includes the specificities of some bestsellers (Slack, Trello, Google Drive...). We provide professional messaging, storage space, online collaborative editors (Words, Excel, PowerPoint), task...
133 Twake alternatives
Cost / License
Freemium
Open Source (AGPL-3.0)
Application type
Team Collaboration
Origin
France
EU
Platforms
Mac
Windows
Linux
Self-Hosted
iPhone
Android
Online
France
EU
+2
Good alternative?Is Twake a good alternative to Slack?

|
1comment
Twake vs Slack Comments
Positive comment by Guest · Feb 17, 2021
I like Twake as an alternative to Slack because it is open-source.
1 of 1 comments
Twake is Freemium and Open SourceSlack is Freemium and Proprietary
Twake is a Team Collaboration Slack is a Group Chat App
Ad
Zenchat
Zenchat combines messaging and task management, letting users turn messages into tasks for streamlined collaboration. It supports task-related and topic-based chats while integrating with the Zenkit Suite. Features include SSO, S...

https://zenkit.com
Learn More
Nextcloud Talk
35 likes
Self-hosted communication platform with secure audio, video, chat, web conferencing, screensharing, advanced encryption, and metadata privacy, running on user-controlled servers, supporting web and mobile apps, and eliminating third-party data exposure.
121 Nextcloud Talk alternatives
Cost / License
Free Personal
Open Source (AGPL-3.0)
Application typeApplication types
Video Calling
Group Chat
Origin
Germany
EU
Platforms
Mac
Windows
Linux
Online
Android
iPhone
iPad
Self-Hosted
Nextcloud
F-Droid
Flatpak
Homebrew
Chocolatey
OpenAPK
Germany
EU
+5
Good alternative?Is Nextcloud Talk a good alternative to Slack?

|
1comment
Nextcloud Talk vs Slack Comments
Negative comment by Guest · Mar 1, 2025
Nextcloud Talk, like most of Nextcloud, is very heavyweight. So if you don't have a very good server, it's going to be very slow (for me it was around 10 seconds to send a single message)
1 of 1 comments
Nextcloud Talk is Free Personal and Open SourceSlack is Freemium and Proprietary
Nextcloud Talk is a Video Calling Slack is a Group Chat App
Nextcloud Talk is Privacy focusedSlack is not according to our users
Mirotalk
18 likes
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
89 Mirotalk alternatives
Cost / License
Free
Open Source (AGPL-3.0)
Application typeApplication types
Video Calling
Group Chat
Origin
Italy
EU
Platforms
Online
Self-Hosted
Docker Hub
YunoHost
Cloudron
Italy
EU
Good alternative?Is Mirotalk a good alternative to Slack?
Dino
23 likes
Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind. Using GTK+/Vala.
86 Dino alternatives
Cost / License
Free
Open Source (GPL-3.0)
Application typeApplication types
Instant Messenger
Group Chat
Origin
Germany
EU
Platforms
Mac
Linux
BSD
Flathub
Germany
EU
Good alternative?Is Dino a good alternative to Slack?

|
1comment
Dino vs Slack Comments
Positive comment by Guest · Jun 4, 2019
Same user-friendliness of Slack, but running on the decentralized/federated XMPP network. No longer give your private/confidential data to a third-party.
1 of 1 comments
Dino is Free and Open SourceSlack is Freemium and Proprietary
Dino is an Instant Messenger Slack is a Group Chat App
Dino is Privacy focused, Decentralized and LightweightSlack is not according to our users
Tracim
18 likes
All you need in a team collaboration tool dedicated to small efficient teams. Chat, notes, drive, online collaborative edition, calendars, news, spaces, notifications...
Cost / License
Free
Open Source
Application typeApplication types
Team Collaboration
Project Management
Origin
France
EU
Platforms
Windows
Linux
Online
Android
iPhone
Self-Hosted
Good alternative?Is Tracim a good alternative to Slack?
S
S
Stackfield
13 likes
Stackfield is a secure All-in-one collaboration tool made in Germany. It combines project and task management, team chat, video calls, documents and more.
Cost / License
Paid
Proprietary
Application typeApplication types
Project Management
Team Collaboration
Origin
Germany
EU
Platforms
Mac
Windows
Online
Android
iPhone
Android Tablet
Software as a Service (SaaS)
iPad
Germany
EU
S
Good alternative?Is Stackfield a good alternative to Slack?

|
1comment
Stackfield vs Slack Comments
Positive comment by John Fastman · Dec 10, 2016
One of the best Slack alternatives. It's more private due to being hosted in Germany (and therefore under German law), and even more so because unlike Slack it offers end-to-end encrypted messaging, which means what you say to your colleagues cannot be intercepted by the host company or given away to the NSA.
1 of 1 comments
S
Stackfield is Paid and ProprietarySlack is Freemium and Proprietary
Stackfield is a Project Management Slack is a Group Chat App
Stackfield is Security-focused and Privacy focusedSlack is not according to our users
Colibri Social
5 likes
Colibri is an open source chat platform built on the AT protocol for communities big and small. It gives you the ability to create communities, manage members, and communicate through text, voice, and forum channels, all while maintaining true ownership of your data.
Cost / License
Free
Open Source (MIT)
Application typeApplication types
Video Calling
Group Chat
Origin
Germany
EU
Platforms
Online
Self-Hosted
Docker
Germany
EU
+5
Good alternative?Is Colibri Social a good alternative to Slack?
eXo Platform
115 likes
eXo Platform is an all-in-one digital workplace solution that helps you connect, align and engage your teams around a single interface. You can use it to improve company and peer-to-peer communication, boost collaboration and manage company knowledge.
108 eXo Platform alternatives
Cost / License
Freemium
Open Source (AGPL-3.0)
Application typeApplication types
Team Collaboration
Social Network
Origin
France
EU
Platforms
Online
Android
iPhone
Android Tablet
iPad
Self-Hosted
Software as a Service (SaaS)
France
EU
+5
Good alternative?Is eXo Platform a good alternative to Slack?
Whaller
59 likes
Create your own free and unlimited private social networks.
105 Whaller alternatives
Cost / License
Freemium
Proprietary
Application typeApplication types
Group Chat
Team Collaboration
Origin
France
EU
Platforms
Online
Android
iPhone
Android Tablet
iPad
Software as a Service (SaaS)
France
EU
+3
Good alternative?Is Whaller a good alternative to Slack?
Zenchat
2 likes
Zenchat combines messaging and task management, letting users turn messages into tasks for streamlined collaboration. It supports task-related and topic-based chats while integrating with the Zenkit Suite. Features include SSO, SCIM provisioning, and audio/video messaging, with free and paid plans available.
Cost / License
Freemium
Proprietary
Application typeApplication types
Group Chat
Team Collaboration
Origin
Germany
EU
Platforms
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Germany
EU
+5
Good alternative?Is Zenchat a good alternative to Slack?

12 of 43 Slack alternatives

Slack AlternativesOnly apps from the EU

Alternatives list

Conversations

Cost / License

Application typeApplication types

Origin

Platforms

Movim

Cost / License

Application typeApplication types

Origin

Platforms

Twake

Cost / License

Application type

Origin

Platforms

Twake vs Slack Comments

Nextcloud Talk

Cost / License

Application typeApplication types

Origin

Platforms

Nextcloud Talk vs Slack Comments

Mirotalk

Cost / License

Application typeApplication types

Origin

Platforms

Dino

Cost / License

Application typeApplication types

Origin

Platforms

Dino vs Slack Comments

Tracim

Cost / License

Application typeApplication types

Origin

Platforms

Stackfield

Cost / License

Application typeApplication types

Origin

Platforms

Stackfield vs Slack Comments

Colibri Social

Cost / License

Application typeApplication types

Origin

Platforms

eXo Platform

Cost / License

Application typeApplication types

Origin

Platforms

Whaller

Cost / License

Application typeApplication types

Origin

Platforms

Zenchat

Cost / License

Application typeApplication types

Origin

Platforms