Slack AlternativesOnly Open Source apps categorised as Video Calling Apps
If that doesn't work for you, our users have ranked more than 100 alternatives to Slack, but unfortunately only zero of them are open source Video Calling Apps. If you can't find an alternative you can try to remove all filters.
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Slack alternatives are mainly Instant Messengers but may also be Group Chat Apps or Video Calling Apps. Other popular filters includes Self-Hosted + Open Source. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Slack.- Group Chat App
- Freemium • Proprietary
- 691 likes293 Element alternatives
Element is a secure collaboration and messaging app based on the Matrix protocol. It’s decentralised to deliver digital sovereignty, and based on an open standard for easy connections and interoperability. It is end-to-end encrypted by default.
License model
- Freemium • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- Matrix.org
- Flathub
- F-Droid
- Cloudron
Element VS Slack
Is Element a good alternative to Slack? - 152 likes136 Rocket.Chat alternatives
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
License model
- Freemium • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- iPad
- Self-Hosted
- Cloudron
Rocket.Chat VS Slack
Is Rocket.Chat a good alternative to Slack?Comments about Rocket.Chat as an Alternative to Slack
John FastmanDoes everything Slack does AND it's open source. However, it's also self-hosted. This means you have to put in the effort to set it up, but you control your own data, which is a huge advantage to your privacy - your chats and files don't sit on someone else's servers, ready for them or hackers to look at.
10Rocket.Chat comes very close to slack regarding it's core features and handling.
7open source, locally hosted so you own your data.
2 - 303 likes282 Wire alternatives
Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption.
License model
- Free Personal • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- F-Droid
- Software as a Service (SaaS)
Wire VS Slack
Is Wire a good alternative to Slack? - 112 likes118 Threema alternatives
Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages.
License model
- Paid • Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- HUAWEI AppGallery
- iPad
Threema VS Slack
Is Threema a good alternative to Slack? - 20 likes82 Element X alternatives
It is the brand new, and fastest ever, Matrix client. It is for personal and community use, and will support enterprise functionality later this year.
License model
- Free • Open Source
Application types
Platforms
- Android
- iPhone
- Android Tablet
- iPad
Element X VS Slack
Is Element X a good alternative to Slack? - 32 likes100 Nextcloud Talk alternatives
Nextcloud Talk is a fully self-hosted audio/video and chat communication service. It features web and mobile apps and is designed to offer the highest degree of security while being easy to use.
License model
- Free Personal • Open Source
Application types
Platforms
- Online
- Android
- iPhone
- iPad
- Self-Hosted
- Nextcloud
Nextcloud Talk VS Slack
Is Nextcloud Talk a good alternative to Slack? - 14 likes55 Mirotalk alternatives
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
License model
- Free • Open Source
Application types
Platforms
- Online
- Self-Hosted
Mirotalk VS Slack
Is Mirotalk a good alternative to Slack?
Comments about Element as an Alternative to Slack
It is decentralized and it works with an open standard
this is a open source and free software that is very useful for me
Encrypted, free, open-source, decentralized