Slack Alternatives
Slack
Slack is a unified communication platform built with an optimized workflow to keep modern teams focused and productive. A familiar chat interface facilitates discussions while advanced features are easily exposed based on context. Hover over a message to see more options such as emoji reactions, sharing and pinning features and more. A navigation bar provides easy access to key features including a powerful search to find important discussions, files and more.
Conversations are organized across dedicated Channels, neatly arranged in a responsive sidebar with collapsible sections. These Channels are highly configurable and allow for flexibility in working with various teams but can also be shared externally, making it easy to hold discussions with partners and clients.
Best Open Source Slack Alternatives
In our list of best programs, we'll review some different alternatives to Slack. Let's see if your platform is supported by any of them.
Jitsi
FreeOpen SourceMacWindowsLinuxWebAndroidiPhoneAndroid TabletBSDiPadJitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live...
Features:
- SIP
- Video Conferencing
- Security & Privacy
- Privacy-friendly
- Browser based
- Chat
- Cross-platform
- Desktop Sharing
- File sharing
- Group chat
- iPhone/iPod sync
- Live Meeting
- Support for Multiple protocols
- Multiple Account support
- No download
- No installation required
- No Login Required
- OTR
- Plugins
- Privacy focused
- Share your screen
- SIP
- Softphone
- Unlimited users
- Video calling
- Video chat
- Video Conferencing
- Voice chat
- WebRTC
- Xmpp
Riot.im
FreeOpen SourceMacWindowsLinuxWebAndroidiPhoneAndroid TabletiPadSelf-HostedA free instant messaging and collaboration software based on the Matrix protocol.
Features:
- End-to-End Encryption
- Decentralized
- Group chat
- Security & Privacy
- Team Collaboration
- Federated
- Privacy-friendly
- Video chat
- Video calling
- Voice Call
- Add-ons
- Clean design
- Custom widgets
- Direct Messaging
- Encrypted chat
- Group collaboration
- Matrix.org protocol
- Message redaction
- Mobile friendly
- Moderation tools
- Per-room avatars
- Privacy focused
- Read receipts
- Text chat
- Typing notifications
- User Management
- User mentions
- Video/Audio Calling
- Voice chat
- Web Integaration
- Chat Bot
- Community based
- DRM Free
- GitHub integration
- Integrated File Sharing
- Live Chat
- MarkDown support
- Real time collaboration
- File Sending
- Server Moderation
- Server side history
- Slack integration
- Social network
- Video calling
- Voice chat
- Web-Based
Wire
FreemiumOpen SourceMacWindowsLinuxWebAndroidiPhoneAndroid TabletiPadSelf-HostedSoftware as a Service (SaaS)Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most...
Features:
- End-to-End Encryption
- Security focused
- Encrypted chat
- Video calling
- Voice Call
- Encrypted calls
- Encryption
- Group chat
- Share your screen
- Security & Privacy
- Anonymity
- Integrated File Sharing
- Multiple Account support
- Photo Sharing
- Privacy focused
- Privacy Protected
- Private Chat
- Secure Chat
- Secure File Sharing
- File Sending
- Video calling
- Video chat
- Voice chat
- Voice messages
- WebRTC
Mattermost
FreemiumOpen SourceMacWindowsLinuxAndroidiPhoneAndroid TabletiPadSelf-HostedJavaScriptGo (Programming Language)CloudronMattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost brings...
Features:
- Group chat
- Team Collaboration
- On-premises software
- Self-hosted in intranet or private cloud
- Chat Bot
- Data API
- Integrated File Sharing
- MarkDown support
- Multi Channel
- Plugin API
- Plugins
- File Sending
- Slack integration
- Supports XMPP
- Webhook support
Matrix.org
FreeOpen SourceMacWindowsLinuxWebAndroidiPhoneAndroid TabletiPadSelf-HostedWebRTCPythonJavaScriptGo (Programming Language)JavaPerlMatrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of...
Features:
- End-to-End Encryption
- Chat
- Decentralized
- Random video chat
- Voice chat
- Chat Bot
- Distributed
- Encrypted chat
- Group chat
- Messaging
- Real time collaboration
- Server side history
- Team Collaboration
- Voice Call
- WebRTC
Zulip
Free PersonalOpen SourceMacWindowsLinuxWebAndroidiPhoneAndroid TabletBSDiPadSelf-HostedZulip is a group chat app in which messages are threaded by topic, helping you have long-running, organized conversations. Zulip's threading makes it easy for people...
Features:
- Threaded Conversations
- Group collaboration
- Chat Bot
- Chat organizer
- Community based
- GitHub integration
- Group chat
- Integrated File Sharing
- Live topics
- MarkDown support
- Secure Chat
- Self-hosted in intranet or private cloud
- Team Collaboration
- Todos
Rocket.Chat
FreeOpen SourceMacWindowsLinuxSelf-HostedCloudronRocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Features:
- Group chat
- Ad-free
- Channels
- Live Chat
- Video Conferencing
- Bots
- Chat Bot
- Extensible by Plugins/Extensions
- Integrated File Sharing
- Location Mapping
- Share your screen
- Self-Serve Capability
- Slack integration
- Video chat
- Voice messages
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