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].
Germany
EU
+4
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.
Alternatives list
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.
+6
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...
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application type
Platforms
- Mac
- Windows
- Linux
- Self-Hosted
- iPhone
- Android
- Online
+2
Twake vs Slack Comments
- Twake is Freemium and Open Source
- Twake is a Team Collaboration
120 Nextcloud Talk alternativesSelf-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.
Cost / License
- Free Personal
- Open Source (AGPL-3.0)
Application types
Platforms
- Online
- Android
- iPhone
- iPad
- Self-Hosted
- Nextcloud
- F-Droid
- Flatpak
- Chocolatey
- Windows
- Mac
- Linux
- Homebrew
+5
Nextcloud Talk vs Slack Comments
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)
- Nextcloud Talk is Free Personal and Open Source
- Nextcloud Talk is a Video Calling
- Nextcloud Talk is Privacy focused
89 Mirotalk alternativesPowered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application types
Platforms
- Online
- Self-Hosted
- Docker Hub
- YunoHost
- Cloudron
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 types
Platforms
- Windows
- Linux
- Online
- Android
- iPhone
- Self-Hosted
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.
Dino vs Slack Comments
Same user-friendliness of Slack, but running on the decentralized/federated XMPP network. No longer give your private/confidential data to a third-party.
- Dino is Free and Open Source
- Dino is an Instant Messenger
- Dino is Privacy focused, Decentralized and Lightweight
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.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Software as a Service (SaaS)
+5
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Software as a Service (SaaS)
+3
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 types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
+5
229 Stackfield alternativesStackfield is a Slack-alternative for chat, collaboration, calendaring and file-sharing. It enables encrypted chatting (end-to-end encryption) and is hosted in Germany.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
+1
Stackfield vs Slack Comments
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.
- Stackfield is Freemium and Proprietary
- Stackfield is a Project Management
Fleep is a messenger for your teams and projects. It enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
+8
Fleep vs Slack Comments
askoojaAllows communicating also with email in addition to in team shared content.
- Fleep is Freemium and Proprietary
France
Italy
Estonia
I like Twake as an alternative to Slack because it is open-source.