The best open source alternative to Skype is Rocket.Chat. If that doesn't suit you, we've compiled a ranked list of other open source Skype alternatives to help you find a suitable replacement. Other interesting open source alternatives to Skype are: Nextcloud, Element, Wire, and Twake Chat.
Skype alternatives are mainly Team Chat & Messaging Tools but may also be Video Conferencing & Virtual Office Tools or Collaborative Workspaces. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Skype.
Open-source chat solution offering real-time messaging, video calls, and file sharing for teams of all sizes.

Rocket.Chat is a powerful, open-source communication platform designed to revolutionize the way teams collaborate. With its robust features and flexible deployment options, Rocket.Chat caters to organizations of all sizes, from small startups to large enterprises.
Key benefits of Rocket.Chat include:
Whether you're looking to improve internal team communication, streamline customer support, or create a community platform, Rocket.Chat offers the tools and flexibility to meet your unique needs. Experience the power of open-source communication and take control of your team's collaboration today.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Nextcloud offers on-premises file sync, sharing and collaboration platform with advanced security and privacy features.

Nextcloud is an open source, self-hosted file sync and share platform that allows organizations to store, share and collaborate on files securely.
Key features include:
Nextcloud is designed for organizations that need secure file sharing and collaboration while maintaining control over their data. It can be deployed on-premises or with a trusted cloud provider.
Some key benefits of Nextcloud:
Nextcloud is used by thousands of organizations worldwide, including major enterprises, educational institutions and government agencies. It provides a powerful yet easy-to-use platform for secure content collaboration.
Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.

Element is a powerful, open-source communication platform that puts privacy and security at the forefront. Built on the decentralized Matrix protocol, Element offers a comprehensive suite of features for both personal and professional use.
Key benefits of Element include:
Whether you're an individual seeking secure messaging or an organization looking for a flexible, scalable communication solution, Element provides the tools you need to stay connected while maintaining control over your data and privacy.
A comprehensive collaboration platform offering end-to-end encrypted messaging, file sharing, and video calls with enterprise-grade security and compliance features.

Wire delivers military-grade security without sacrificing user experience. The platform features always-on end-to-end encryption for messages, files, and calls, while maintaining an intuitive interface for seamless team collaboration.
Key capabilities include:
Trusted by industry leaders including BMW, ExxonMobil, and government organizations worldwide, Wire ensures your sensitive communications remain private and compliant. The platform is particularly valuable for organizations requiring:
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.

Secure and private by design, Twake Chat leverages the Matrix protocol for decentralized communication that puts you in control. This free and open source messenger delivers enterprise-grade security with end-to-end encryption while maintaining simplicity for both work and personal use.
Key features that set Twake Chat apart:
Perfect for professional teams who need secure communication without compromising on functionality. The Matrix protocol ensures your data remains decentralized rather than controlled by a single entity, while customizable security levels let you add extra encryption when needed.
Whether you're managing team collaboration or need a reliable messaging solution that respects privacy, Twake Chat provides the security and flexibility modern organizations require.