Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application typeApplication types
Platforms
- Online
- Self-Hosted
- Docker Hub
- YunoHost
- Cloudron
Italy
EU
Slack Alternatives
Slack is described as 'Facilitates teams' real-time collaboration with versatile chat interface and advanced search in configurable channels across multiple platforms' and is a leading Group Chat app in the social & communications category. There are more than 100 alternatives to Slack for a variety of platforms, including Web-based, Android, iPhone, Windows and Mac apps. The best Slack alternative is Zulip. It's not free, so if you're looking for a free alternative, you could try Zulip or Element. Other great apps like Slack are Rocket.Chat, Discord, Matrix and Trello.
filter to find the best alternatives
Slack alternatives are mainly Team Collaboration Tools, but if you're looking for Group Chat Apps or Instant Messengers 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
- 89 Mirotalk alternatives
61 Mezon alternativesThe best Discord alternative. Mezon is a Live, Work, and Play platform. It’s perfect for gaming and chilling with friends, or even building a global community. Customize your own space to talk, play, and hang out.
Cost / License
- Free
- Open Source (MIT)
Application typeApplication types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Software as a Service (SaaS)
Vietnam
+7
515 monday.com alternativesTransform team work habits with an intuitive platform offering customizable workflow solutions, enterprise-grade security with certifications, and features that imbue data ownership, ensuring privacy and control across global processes.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- iPad
- Android Tablet
Israel
+7
Free, privacy-focused chat platform for gaming communities offering servers, channels, roles, low-latency voice, video, screen sharing, 5GB uploads, message translation, end-to-end encrypted DMs and calls, forum features, calendar events, and no paid tiers.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application typeApplication types
Platforms
- Windows
- Linux
- Online
- Android
- Android Tablet
- Google Chrome
United States
+5
104 Huly alternativesOpen-source platform unifying project, document, issue, and task management with real-time team collaboration, instant messaging, video conferencing, and GitHub bidirectional sync, all in one customizable workspace for developers and product teams.
Cost / License
- Freemium
- Open Source (EPL-2.0)
Application typeApplication types
Platforms
- Online
- Self-Hosted
+3
Unlimited public or private chat rooms with full search, GitHub-based authentication, file and code sharing, flexible integrations with popular developer tools, admin controls, guest access, multi-platform support, data export, and ad-free collaboration spaces.
United Kingdom
50 Nerimity alternativesOpen-source chat platform providing community-focused group messaging, video calls, profile customization with animated avatars, custom emojis, tags, post creation, discovery of communities, and full source code access on GitHub. Entirely donation-funded.
Cost / License
- Free
- Open Source (GPL-3.0)
Application typeApplication types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- Android Tablet
- Self-Hosted
- United Kingdom
![Profile Interface [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_993222_full.png)
![Messages View [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_281418_full.png)
![Server Discovery [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_282508_full.png)
+2![Server Settings [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_628028_full.png)
Flock is the fastest growing team messenger and loved by over 25,000 companies globally. It also comes with its powerful platform, FlockOS.
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Chrome OS
- Android Tablet
- Windows Phone
- iPad
- Software as a Service (SaaS)
- United States
+2
Free, browser-accessed community platform with real-time text chat, voice and video calls, topic channels, encrypted direct messages and files, easy email sign-up, member and staff controls, invite links, moderator audit log, and full privacy settings.
- United States
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
Platforms
- Windows
- Linux
- Online
- Android
- iPhone
- Self-Hosted
175 Ripcord alternativesRipcord is a desktop chat client for group-centric services like Slack and Discord. It provides a traditional compact desktop interface designed for power users. It's not built on top of web browser technology: it responds quickly to input, sips gently from computer...
Cost / License
- Freemium
- Proprietary
Application typeApplication types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- Discord
- Slack
- United States
Open source encrypted group-chat platform focused on privacy and efficiency, featuring Rust-based backend for speed, customizable interface, minimal data collection, real-time messaging, community-driven improvements, and ergonomic design for various use cases.
![Profile Interface [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_993222_full.png)
![Messages View [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_281418_full.png)
![Server Discovery [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_282508_full.png)
![Server Settings [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_628028_full.png)
France
